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Pyramid 35 amp regulated power supply

Hi, I just bought this power supply model #PS-36 KX.I have been using it with a Texas Star 400watt cb amp.I only use the amp on medium which pusses 300 watts.But today it had the power protection alarm start going off and the meter run to 16 watts on the power supply and will not go off.If with nothing hooked up to it as soon as you cut it on the light and alarm go off and the meter runs up to 16 watts.Do you have any idea what I have done?Any info would be very greatful! Thanks Jeff

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Use specified power supply by the computer.

Posted on Feb 26, 2008

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You need a PS52KX to use your 400 watt cb amp. The PS 36KX is insufficent for what you are using. I know nfrom years of experience. Ron

Posted on Feb 11, 2011

  • rara May 30, 2013

    what a *******!!! You think that's answering the question????

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1 Answer

The output voltage give 23 volts


I would check the resistor going to the voltage regulator and see if it either has a bad solder joint, or is shorted.

Sep 18, 2013 | Pyramid 10 Amp Power Supply (068888701655)...

1 Answer

What is this used for


Perfect for Home, Shop & Hobbyist. * Input: 115V AC, 60Hz, 270 Watts. * Output: 13.8V DC. * 12 AMP Constant/14 AMP Surge. * Powers Cellular Phones,12V DC CB Radios, Scanners, HAM Radios, Autosound Systems. * Screw Terminal Connectors. * Electronic Overload Protection w/ Auto Reset. * Short Circuit & Thermal Protection. * Fuse Protected. * LED Condition Indicators. * Heavy Duty Cabinet & Heatsink w/Anti-Skid Rubber Feet. * Dimensions:7.87'L x 7.16'W x 4.72'H

Feb 17, 2012 | Pyramid PS14KX 270-Watt Power Supply

1 Answer

The red lightcomes on when i hook up things to it when nothin is hooked up its green


Usually, this indicates an overload condition. I have a Pyramid 35 amp supply that has no green light but uit does have a red light and an irritating little beeper that the instruction book says is activiated when power draw approaches 90% of rated output. (Why not call it a 30 amp supply if you can't use the full 35???) Enough editorializing. You don't say if the supply actually works, just that the light changes color. If it doesn't work at all, I would start with checking the diode bridge for a blown or leaking diode. If one is bad, it can output enough to drive an LED but fail anything else. If these are good, check the filter capacitor. If this is bad, the hum could concievably confuse the regulator circuit. Next, I would check what ever voltage regulator it has in it. I can't comment on specifics as there are many schemes that can be used. My unit, for example, is like a mouse driving an elephant. It has a small 723 regulator IC, (Aprox. 100ma output), controling 4 large TO-3 pass transistors driven by a 36 volt 40 amp transformer to boil it all down to an adjustable 12 to 15 volts.
The bottom line is without knowing if the unit is puting out or not and not having it in my hand to look at, this is the best I can do. I hope it helps.
Good luck.
Jeff

Feb 03, 2011 | Pyramid 10 Amp Power Supply (068888701655)...

1 Answer

What i have to do if protection light is on/


One of your power transistors might have gone short circuit, You will have to have them repaced.

Sep 27, 2009 | Pyramid PS-7KX Regulated 12V 5Amp Power...

1 Answer

Was talking on cb and power supply went to beeping and will not quit. Unplugged it and plugged it back in and still does it. I have a Galaxy DX98VHP hooked up to it in a scale house. Took cb off and it...


THE BEEPS INDICATE THAT THE OVERVOLTAGE PROTECTION IS ACTIVATED,DO NOT HOOK UP ANY THING TO THAT POWER SUPPLY!!!OR THE FULL UNREGULATED VOLTAGE (20-30 VOLTS)WILL PASS FROM THE SHORTED REGULATOR TRANSISTORS TRHU YOUR GALAXY AND FRY IT.GET IT TESTED BY A PRO,USUALLY THE REPLACEMENT PARTS FOR POWER SUPPLY ARE DIRT CHEAP.
GOOD LUCK.

Sep 11, 2009 | Pyramid (PS36KX) 600-Watt Power Supply

1 Answer

Re: Pyramid PS-36kx power supply buzzer sounded,red light came on


Hi! I saw your question, and maybe this will help. I also have a Texas Star 100w amp, and this same power supply. Even though the nominal draw for your equipment is way below the rated amp flow of the power supply, when you key up, and the output on the amp is at max, you are drawing the limit of your power supply! Try running this setup at a lower linear output. You don't need the full 100 watts to get out! 60-80 watts is aplenty! You should start at a low output, and slowly increase the output(while keyed up), untill the power supply starts to complain.(buzzer/light). This is what your limit will be. The only other cure, is a MUCH bigger power supply. Unfortunately, I cannot afford a 60-90 amp supply, so this is what I am forced to do to use the one we have. Also,keep your cb's output very low when using the linear amp. These amps are supposed to get a low signal from your radio, or the linear amp is overdriven. (noisy and unstable. Hope this helps you! 73's to you! jimsjinx

Apr 30, 2009 | Pyramid (PS36KX) 600-Watt Power Supply

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