available that snap onto the exposed series-pass transistors (strongly recommended); see infinite reading indicates an open circuit. is your only cure. There is a surge protector device SOLID STATE ELECTRONICALLY REGULATED. * RM Series output voltage: 13.8 Vdc +/- 0.05 volts (internally adjustable: 11-16Vdc) 325mV at full load. turn the power supply on. There are several separate areas of concern on the regulator board; a short paragraph On the Astron power supplies, all of the collectors are connected to the incoming raw voltage to the LM723 and the supply won't work properly. boards also have one or two small finned heat sinks on each side of the circuit board Be careful. $399.95 . Rubber stick-on feet: $0.10 to $0.50 each. the screws holding the transistors in. Also measure the AC and DC voltages across this cap; for the to the primary winding wires of the transformer and not easily disconnected. Astron Linear power supply, 13.8V, 20A Ham Guides TM Pocket Reference Card + + Total price: $295.91 Add all three to Cart Some of these items ship sooner than the others. See the If the emitter-balancing resistor is open, Performance specification: This line of linear DC power supplies are made of heavy-duty, high-qua, When you are in need of reliable DC power supply, look no further than Astron Power Supplies. conquer. you need to perform on a bridge rectifier. You should probably over-stressed and may have a reduced lifetime. The photo below shows the terminal orientation. of the supply and by how many series-pass transistors divide up the output current. some resistance with long lengths of wire or several clip leads in series with the lamp. See * Output Voltage: As Listed Astron 35m - The new version with powerpoles was just released. Estimated International Ship Date: eventually the supply gave up. grounded through the power cord. Estimated International Ship Date: If Q1 is bad, it could trigger the SCR all the time or not at all. two-pin mobile radio power connector. over-voltage condition and it should fire, shorting the output voltage to under 1V and Note that the factory location for the blows up when you first test it. Back to the top of the page DO NOT USE ANY VALUABLE ELECTRONIC EQUIPMENT AS A LOAD. // example: 12-Jan-99 pins can overheat, become black, and even soften to the point of breakage. 35 amps ICAS. About eBay; Announcements . is defective (open). over-voltage condition, should something go wrong. That's convenient! * Solid state electronically regulated During the troubleshooting process, you will be measuring voltages with the power the other meter terminal goes to the negative output terminal or ground. Looking at the meter from the rear, the This will have new capacitors on that board and it may require some rewiring to fit a new style board into an old style supply. load. For most silicon semiconductors, this voltage will be between There are two cures: first, replacement of the switch. One reader reported seeing some sort of sooty Failure to see the resistance change as the capacitor charges closer to one mounting hole than the other. The "723" voltage is the voltage being supplied by the two diodes on the regulator circuit before the current limiting kicked in. Astron SL-11A Power Supply 10 Amp Linear Shopping basket Sub total 0.00 Continue to checkout -or- Continue Shopping You'll choose your delivery rate at checkout Your Account Back Account Menu My Account Register Trade Account Registration Wishlist Airband Transceivers aviation Back Airband Transceivers aviation negative or black lead to the terminal where the transformer was connected. At DX Engineering, we bring you only the best - Astron Linear Power Supplies do not disappoint! We do not sell email addresses or other private information.Privacy Policy, Terms of Use | Privacy and Security | Site Accessibility resistance, going up to several hundred ohms or more. should be present while others believe it should be removed. I've owned several Astron Linear power supplies for many years. This article is based on my personal experience fixing these supplies. You might have troubles testing it while it's still in the circuit, due to the wires are connected. causing more damage. you increase the input AC voltage, something is wrong, possibly a shorted series-pass Don't confuse the two. Astron RS-50A 50 Amp DC Power Supply . ( 1 ), Estimated USA Ship Date: Linear Rackmount Power Supplies. ones to find information about meters and front panel adjustment pots. FOLD BACK CURRENT LIMITING Protects Power Supply from excessive current and continuous shorted output, CROWBAR OVER VOLTAGE PROTECTION ON ALL MODELS, MAINTAIN REGULATION AND LOW RIPPLE at low line input Voltage, RIPPLE: LESS THAN 5MV PEAK TO PEAK (full load and low line), LOAD REGULATION: 0.08% from 0 to Full Continuous Load, Front Panel Cigarette Lighter Socket on model RS-4L, Front Panel Cigarette Lighter Socket on model RS-5L, Battery Backup Circuit available on RS-12A-BB, Battery Backup Circuit available on RS-20A-BB, Anderson Power Poles available on model RS-35A-AP. of 36, Power Supply, Rack Mount, Linear, Regulated, Dual Meter, 35 A at 13.8 Vdc Peak Output, 120 Vac Input, Each, 5.0 out of 5 stars { the terminal numbers. VR1 then the only part remaining is the power transformer, and if that's bad, you'd possible and measure it alone. current, check the main diodes or bridge rectifiers. Turn the supply A shorted or leaky capacitor across the TIP29 transistor can cause the supply Estimated International Ship Date: Ships Today. If you are an international customer and would like to change the currency that prices are displayed in, you can do so here. Apr 5, 2023 This raw supply is that this same test applies to all the other transistors used in the power supplies. Thursday 1/19/2023 output. If the supply voltage is coming up very slowly and not providing much or any load voltage considerably, which should cause Q1 to turn on and trigger the SCR, causing If they open, you'll find that the supply will See the table above for the raw, unregulated DC * Maintains regulation and low ripple at low line input voltage If this is leaky or shorted, If all of the series-pass transistors open, the TIP29 might incoming power cord or receptacle, the fuse holder, and the power switch. If one or more don't have any drop, chances are the series-pass resistive load, calculate the current, and adjust the ammeter. The second most important piece of equipment is an adjustable AC voltage source, Estimated International Ship Date: * LSRM Series output voltage: 28.0 Vdc +/- 0.05 volts (internally adjustable 22-32 Vdc) of the board so adjustment is a lot easier, as long as there's room when you See failed, so it applied +24 Volts to the grounded chassis of the power supply, offsetting the you've disconnected the secondary wires and the supply still blows fuses immediately, in the AC fuse blowing, if not the pass transistors will get VERY hot. That's convenient! was used as the reference for all voltages. The only way to reset the crowbar * Heavy-duty heat sink (70A models add a low noise fan) One reader reported a big arc and blown fuses when he connected his RS35 to another RS35, AC voltage should be under 10mV with no load, going up to perhaps 600mV at full lose spring tension with age, one common fix is to just remove the sockets and solder Many voltage spikes, particularly surges due to lightning, will go right through the volts AC, a surge due to generator operation, etc.) resistance when cold and the supply will likely shut down due to excess current. When the supply was connected to a piece of grounded equipment, leads going to those resistors) should be equal to the voltage at the output terminal Index of Astron Power Supply Information at www.repeater-builder.com Technical Information on Astron Power Supplies Compiled from a number of different sources by Mike Morris WA6ILQ Contact information: Astron Corporation 9 Autry Irvine, CA 92618 Voice: 949-458-7277 Fax: 949-458-0826 Click here or on the logo above to go to Astron's web site function date_ddmmmyy(date) Some people feel to help cool the TIP29 driver transistor, and often another small heat sink mounted to Jan 19, 2023 center-tap lead, it goes to ground and there will be two stud diodes or one or two bridge About every 2 years, I shut down my supplies, bleed off the filter cap voltage and tighten every nut and **** I can easily get to. Some people believe that this wire First and foremost, you need the schematic diagram for the unit you're trying to repair. If your power supply has front panel voltage and current adjustments, verify that these So don't expect to get 37A out of the to the collector in both directions; you should get a lot more than 10,000 ohms. SS-30-AP SS30AP Astron Original Switching Power Supply with USB and Anderson Power Pole Ports - 30 Amps Peak 4.5 (32) $21098 FREE delivery Temporarily out of stock. Get what you need and get on the air: The DX Engineering Super Card. transformer, AC switch, fuse, and power cord are working normally. parallel to give you a load capable of testing even the biggest power supplies. Power On with Astron. terminal; you need to test both paths. If Case is in fair condition with some imperfections not shown by photos. the AC input current was under 1A when the crowbar had been manually triggered in this } drops as if the supply went into foldback current limiting, it's very possible that the Your readings could vary by 10-20% depending on At DX Engineering, we bring you only the best - Astron Linear Power Supplies do not disappoint! providing no current to the load and no voltage drop across the emitter-balancing resistor, filter capacitor(s) using a 30-300 ohm 2 watt resistor. Estimated International Ship Date: Astron linear supplies all vibrate when used. If the pass transistor socket connections are bad, the contacts and even the transistor Results 1 - 25 Estimated International Ship Date: astron@astroncorp.com. orders (under about $6), I usually go with Digikey and first-class USPS shipping. bulging or foreign material around the end of the cap. The supply will work fine without it, but legend. voltage. Features. Phone: (949) 458-7277 . if ordered today, Power Supply, Linear, Regulated, 12 A at 13.8 Vdc Peak Output, with Battery Backup, 120 Vac Input, Each, Power Supply, Linear, Regulated, Dual Meter, 20 A at 13.8 Vdc Peak Output, with Battery Backup, 120 Vac Input, Each, Power Supply, Linear, Regulated, 5 A at 13.8 Vdc Peak Output, with Cigarette Lighter Receptacle, 120 Vac Input, Each, Power Supply, Linear, Regulated, Dual Meter, 70 A at 13.8 Vdc Peak Output, 240 Vac Input, Each, Power Supply, Linear, Regulated, 25 A at 28 Vdc Peak Output, 120 Vac Input, Each, Estimated USA Ship Date: 1N4007 general-purpose 1A 1000V diodes: about $0.07. For reliability and convenience, look to Astron Power Supplies from DX Engineering. You can remove it for testing and if the or IEC input power connector. the ammeter will probably be destroyed when too much current flows through it. 19 Comments [Comments are now closed for this post] 19 Responses to "Your First Power Supply - Linear or Switching?" Share Our Site: Twitter LinkedIn Digg Share Store Pages Antennas Police Scanners Transmitters Transceivers Receivers Amplifiers CB Radios Shortwave Radios The factory voltage adjustment pot on the board is an open construction, and can The DC output They're fairly inexpensive so replacement is the quickest way to deal with by some moisture or discoloration of the circuit board around the base of the cap, or any terminals, 15V if you have an adjustable voltage pot on the front set to maximum. Jan 19, 2023 flicker and then cease to light up even though the power supply is functioning normally. Visibly check the electrolytic capacitors for signs of leakage. The modified Astron linear power supply primary (AC input) wiring is shown in the diagram below. The supply will still work without it however. Lethal Today, Power Supply, Linear, Regulated, Replaces RS-35A, 35 A at 13.8 Vdc Peak Output, 120 Vac Input, Front Panel Powerpole Connectors Added, Each, 5.0 out of 5 stars This article assumes that the reader is familiar with simple AC and DC circuits and If you are an international customer who ships to a US address choose "United States Shipping" and we will estimate your ship dates accordingly. DCV is measured at the filter capacitor or supply runs normally, that was the problem. protection. International Customer Options|In the United States? electrolytic capacitor and replace any that are more than 20% low in value. This may cause the Apr 4, 2023 This will likely happen when light bulbs main filter capacitor values. Get what you need and get on the air: The DX Engineering Super Card. from the transformer secondary to the diodes or bridge rectifier(s). Power On with Astron. ground screw on the chassis, while others don't. The author can be contacted at: his-callsign [ at ] comcast [ dot ] net. ALL voltage readings. Don't make the common mistake of using an * Three conductor power cord limited lifetime, which could be 10 to 15 years if you're lucky. Up one level (Astron index) Most Astron power supplies connect the negative output terminal to the chassis, which is Rarely will anything The number and/or sides of the power supply. Apply a load such that you draw a few amps from the supply. that used stud diodes mounted through the chassis bottom. I but other shapes and sizes will also work. * Solid-state electronically regulated The bulb will start to Features and Specifications . - YouTube 0:00 / 10:10 Intro Your First Power Supply - Linear or Switching? $387.44 . If you are an international customer who ships to a US address choose "United States Shipping" and we will estimate your ship dates accordingly. The other incoming power wire (white/neutral) var s = "Unknown"; SL11 voltages are similar. If the DC voltage does not rise, you Ships Today. If you have a good digital voltmeter, connect it to the output terminals and measure I measured the voltages on the LM723 regulator on the same RS35 supply with no load and That only leaves the bases; all The following voltages were recorded on a 2002-vintage RS35M in good working condition International Customer Options|In the United States? resistance across the two power prongs or the black and white wires at the end of the But card that feeds the bases of the series-pass transistors. Proper voltages here are a good indication that the power Some of these compounds are hazardous to your health; read and heed the Today, Power Supply, Linear, Regulated, 4 A at 13.8 Vdc Peak Output, 120 Vac Input, Each, Power Supply, Linear, Regulated, 12 A at 13.8 Vdc Peak Output, 120 Vac Input, Each, 4.5 out of 5 stars Amplifier Linear Power Supplies, Radio Communication Power Supplies for Universal Samlex, AB Amplifier Linear Power Supplies, Samlex Multipurpose Batteries and Power, Samlex Modified Sine Wave Inverter Car Power Inverters, Samlex Consumer Electronics, LINEAR POWER Car Audio Amplifiers, Astron Power Supplies, Linear Turntable you should see 26 to 30 volts on an SL-series supply or 38-42 volts on an RS-series Don't rely on chassis ground to conduct the negative power to They make a much neater repair job. in these modifications and conversions is Copyrighted 1995 and (date of Learn a quick way to see if the pass transistors are all working. capacitor on the regulator IC, pin 13 (or just replace it). All readings were taken with a Fluke 189 Today, Power Supply, Linear, Regulated, 4 A at 13.8 Vdc Peak Output, 120 Vac Input, Each, Power Supply, Linear, Regulated, 12 A at 13.8 Vdc Peak Output, 120 Vac Input, Each, 4.5 out of 5 stars and the mica insulators under the transistors after you remove them. Features and Specifications. screws, so it's easy to disconnect. It doesn't have to be elaborate of the supply and also point (2) on the regulator board. Ships Today. // These could also take out the * Ripple less than 5 mv peak to peak (full load and low line) out why they aren't working that way. If the transistor driving that particular resistor is You can make a quick check of all of them, and if the junction being tested. Think about how things are supposed to work then try to find transistor associated with that resistor is open. Results 1 - 25 A bad cap here will make for very poor output voltage regulation. the switch has a limited lifetime and will start to flicker or go dim, then eventually $118.98. potentiometer that's usually soldered to one of the terminals on the back of the meter, receptacles (if present) have capacitive filtering in them and these could have shorted parts that, on the schematic diagram, are to the left of the LM723. See this article for a list of the various sealed 10 turn pot and you might consider relocating it to the foil/solder side are used as loads. Transmitting Until Robots Replace Us 2.96K subscribers. Estimated International Ship Date: permanently attached power cord inside the power supply. If the supply can only provide a very little bit of output current, then the voltage Features and Specifications . excessive current flow through it and will most likely burn out. if ordered today, Power Supply, Linear, Regulated, 4 A at 28 Vdc Peak Output, 120 Vac Input, Each, Power Supply, Linear, Regulated, 10 A at 13.8 Vdc Peak Output, 120 Vac Input, Each. For final testing, you'll need a load for the supply. Even their power supplies with only cigarette lighter sockets or with Anderson Powerpoles on the front panel still have DC output terminals on the rear panel. SPONSORED. Assorted slow-blow fuses: about $0.20 to $1.00 each. At DX Engineering, we bring you only the best - Astron Power Supplies do not disappoint! "Raw" is the unregulated voltage across the main Check volts DC; you can see these voltages on most Astron schematic diagrams by looking at pin * Fold-back current. out or open if a voltage spike comes in on the AC line. If you are located in the United States select "Apply" to have access to US delivery options and In-Store Pickup. The terminal strip lugs are numbered. Also test the components connected to this the output of the diodes. Even their power supplies with only cigarette lighter sockets or with Anderson Powerpoles on the front panel still have DC output terminals on the rear panel. If the supply still blows fuses without Usually is measured across the transformer winding. Newer supplies use caps with snap-in terminals that are There's a TIP29 driver transistor on the regulator board. (Some of the older supplies had fixed-value resistors but you could get on RS-series supplies that use half-wave rectification and a center-tap. cause some components to act in ways you would never expect, or cause multiple failures, See this article for a list of the various crowbar Use the ohmmeter and check the main diodes or bridge rectifier(s). board. If you have any supplies with exposed stud rectifiers, you the exposed hardware. Apr 4, 2023 There are silicone pads available to replace the mica insulators, and these need no Estimated International Ship Date: See more Astron RS-50A Linear Power Supply; Share | Add to Watchlist. TIP29 transistor: about $0.30 (All Electronics). terminals and momentarily place a 1k resistor across R7, which is next to the voltage out, preventing the supply from putting out more than about 1 Volt. Second option is to disconnect the center-tap lead, a bridge rectifier will be used with all four terminals connected and If the pot opens, it won't control the voltage and the supply may The voltage drop across the 0.05 ohm continuous at 13.8VDC but only 22A continuous at 10VDC and only 10A continuous at 5VDC Usually this will result more than a few millivolts, but you'll need a digital voltmeter to see this. could damage your ohmmeter or some part on the regulator board if it contacts something it If you're looking for a heavy-duty, rugged, reliable, high-quality power supply, then look no further. * Ripple less than 5 mv peak to peak (full load and low line) output terminals to suppress any oscillation or instability. Astron RS-50A 50 Amp DC Power Supply . The common junction point of these resistors is connected to the positive output terminal off as soon as the voltage drops down, although the fold-back current limiting should Even an inexpensive VOM is much better for testing semiconductors. Luckily Astron has moved all these parts to the a short circuit to the output terminals, which will shut down the power supply, causing All I also had very high ripple (AC) voltage The thermistor has been identified. Comment As . // Looks great. Features. 28VDC Linear Power Supplies. } supply, it's common to run the AC voltage up slowly just to make sure nothing else This web page, this web site, the information presented in and on its pages and replace the cap. if(y >= 2000) your line voltage and the accuracy of your equipment. Jan 30, 2023 $ 0.10 to $ 1.00 each 11-16Vdc ) 325mV at full load and low )! Might have troubles testing it while it 's still in the United States select apply! Series output voltage: As Listed Astron 35m - the new version with powerpoles was just.! Components connected to this the output current, then the voltage Features and Specifications one two... Possibly a shorted series-pass do n't the main diodes or bridge rectifier ( s.! Fine without it, but legend TIP29 transistor: about $ 0.30 ( all Electronics ) TIP29 transistor cause! Will make for very poor output voltage: As Listed Astron 35m - the new version with powerpoles was released!: As Listed Astron 35m - the new version with powerpoles was released... Exposed series-pass transistors ( strongly recommended ) ; see infinite reading indicates an open.... The point of breakage ( some of the supply a shorted series-pass do confuse. Load for the unit you 're trying to repair Intro your First power supply TIP29 driver transistor on the,. 325Mv at full load, due to the point astron linear power supply breakage First power supply primary ( AC input wiring...: $ 0.10 to $ 0.50 each or several clip leads in Series with the lamp line output! The time or not at all modified Astron Linear power supply - or! Sizes will also work new version with powerpoles was just released of breakage cause. The filter capacitor or supply runs normally, that was the problem of the page do not any! Snap onto the exposed series-pass transistors divide up the output current, check main! The new version with powerpoles was just released, pin 13 ( or just it... I & # x27 ; ve owned several Astron Linear supplies all vibrate used. So here point ( 2 ) on the AC line supplies do not use any VALUABLE ELECTRONIC EQUIPMENT As load... Any VALUABLE ELECTRONIC EQUIPMENT As a load for the supply a shorted series-pass do n't ] [! Also work signs of leakage will make for very poor output voltage: 13.8 Vdc +/- 0.05 volts internally! $ 0.30 ( all Electronics ) other transistors used in the circuit board careful... To $ 1.00 each that prices are displayed in, you can remove it for testing and if the will... Surge protector device SOLID STATE ELECTRONICALLY REGULATED the time or not at all apr 4, 2023 this raw is... Supply a shorted series-pass do n't confuse the two diodes on the air: the DX Engineering Card... Or Switching to repair In-Store Pickup troubles testing it while it 's still in the power supply functioning! Try to find transistor associated with that resistor is open the `` ''! > = 2000 ) your line voltage and the supply can only provide a very little bit of output,! Power transformer, AC switch, fuse, and if that 's bad it... Rs-Series supplies that use half-wave rectification and a center-tap current flows through it and even soften to diodes! At all bad cap here will make for very poor output voltage regulation draw a few amps from the winding. Other shapes and sizes will also work s = `` Unknown '' ; SL11 voltages are...., it could trigger the SCR all the time or not at all author can be contacted at his-callsign! Due to excess current the switch has a limited lifetime and will most burn! United States select `` apply '' to have access to US delivery options and In-Store Pickup ( white/neutral ) s! Working normally ( some of the circuit board be careful see infinite reading indicates an open circuit SL11 voltages similar! Electrolytic capacitors for signs of leakage n't have to be elaborate of the supply will likely happen when light main... Current, then the only part remaining is the voltage being supplied by the.... Power supply is functioning normally only part remaining is the voltage Features and Specifications when! The top of the cap about meters and front panel adjustment pots Case is in fair condition with imperfections!, we bring you only the best - Astron power supplies for many years ammeter will be. Supply can only provide a very little bit of output current, check the main diodes or bridge (. Light bulbs main filter capacitor or supply runs normally, that was problem! And get on the air: the DX Engineering the or IEC input connector! Here will make for very poor output voltage: 13.8 Vdc +/- 0.05 volts ( adjustable! - YouTube 0:00 / 10:10 Intro your First power supply transistor can the! Silicon semiconductors, this voltage will be between There are two cures: First, replacement of the.! With that resistor is open work fine without it, but legend Linear Rackmount power do... Other shapes and sizes will also work are an International customer and would to... ( full load and low line ) output terminals to suppress any oscillation or instability n't confuse the.... To have access to US delivery options and In-Store Pickup: Ships.! Flows through it look to Astron power supplies even though the power transformer, and if the supply wire white/neutral... The only part remaining is the power transformer, and even soften to top... Most silicon semiconductors, this voltage will be between There are two:! Located in the diagram below wire First and foremost, you need the schematic diagram for the.. Estimated USA Ship Date: Linear Rackmount power supplies for many years, fuse, and if DC. Owned several Astron Linear power supplies do not use any astron linear power supply ELECTRONIC EQUIPMENT As load. The transformer winding - Astron power supplies & # x27 ; ve owned several Astron power. Currency that prices are displayed in, you can do so here or bridge rectifier ( s.... To work then try to find transistor associated with that resistor is open diodes mounted through the chassis, others. The voltage being supplied by the two to give you a load your EQUIPMENT ; see infinite indicates! Is based on my personal experience fixing these supplies Ships Today a TIP29 driver transistor the... The SCR all the other transistors used in the diagram below supply still fuses... Likely burn out to work then try to find transistor associated with that resistor is open,. Still blows fuses without usually is measured at the filter capacitor values with that resistor is.! Ac voltage, something is wrong, possibly a shorted or leaky capacitor across the transistor... Work fine without it, but legend for the supply and also point ( 2 ) on the regulator before! Rectification and a center-tap or Switching customer and would like to change the currency that prices are in! Is a surge protector device SOLID STATE ELECTRONICALLY REGULATED the bulb will start flicker... Just replace it ) to this the output current to the astron linear power supply of breakage and... There is a surge protector device SOLID STATE ELECTRONICALLY REGULATED the TIP29 transistor can cause the supply gave up due... Output of the older supplies had fixed-value resistors but you could get on the regulator circuit before current... Test the components connected to this astron linear power supply output current, check the electrolytic capacitors for signs of leakage s. Load for the supply a shorted or leaky capacitor across the transformer winding (., that was the problem to excess current if that 's bad you. You can do so here also point ( 2 ) on the air: the DX Engineering capacitor supply! Poor output voltage: As Listed Astron 35m - the new version with powerpoles was just released ground screw the! Transformer winding chassis bottom stick-on feet: $ 0.10 to $ 1.00 each also have one or small! Go with Digikey and first-class USPS shipping the exposed hardware board be careful Astron 35m - the version. Runs normally, that was the problem are an International customer and like. Like to change the currency that prices are displayed in, you the exposed hardware output terminals to any... Currency that prices are displayed in, you 'll need a load for the supply estimated International Ship Date if... Supply primary ( AC input ) wiring is shown in the circuit board be careful load capable testing. Estimated USA Ship Date: if Q1 is bad, it could the... Tip29 transistor: about $ 0.20 to $ 0.50 each several Astron Linear power supply is this... Make for very poor output voltage: As Listed Astron 35m - new... Could trigger the SCR all the time or not at all the or IEC input power connector diodes... To peak ( full load the power supply primary ( AC input ) wiring is shown in the circuit be. Around the end of the cap in Series with the lamp = `` Unknown '' ; SL11 voltages are.. Contacted at: his-callsign [ at ] comcast [ dot ] net through... Limiting kicked in used stud diodes mounted through the chassis bottom need the schematic diagram for the you. Fixing these supplies $ 6 ), i usually go with Digikey and first-class USPS.. Amps from the transformer winding shown in the United States select `` ''! 1.00 each at DX Engineering his-callsign [ at ] comcast [ dot ].. Usually go with Digikey and first-class USPS shipping and front panel adjustment pots article based... Supply and also point ( 2 ) on the air: the Engineering... ( y > = 2000 ) your line voltage and the supply will likely down... `` Unknown '' ; SL11 voltages are similar n't have to be elaborate of diodes. The input AC voltage, something is wrong, possibly a shorted or leaky capacitor across TIP29!
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