psu

I was trying to make a portable PSU with LTC3780 Module and a 12v 7Ah lead acid battery. But I am thoroughly disappointed by the module. Infact my past experience with this module is not good. This module is like a glass ball, with little improper use and it smokes and gets destroyed. I do not...

Hello, I am making a replacement linear power supply for a radio receiver. I have drafted two circuits that implement the rectification and regulation of a 6V output. Schematic 1 - Fuse in conventional position for a Crowbar circuit. Schematic 2 - Fuse before regulator with diode to protect...

Hi I want design a simple AC to DC base on following circuit but I don not know how obtain elements value for capacitors and inductor What is correct value for them? Consider AC voltage is 15V and 5Amps Thanks in advance Also I want connect the out put of this circuit to following circuit, I...

Hi I have a old PC PSU, and I want use it to turn on a car lighter to use it as a hot air gun!:) but problem is when I turn on the PSU by connecting green wire to ground and then connect the lighter, PSU goes OFF!! Why? I know car lighter uses much amps but on youtube I see a clip that uses 12V...

Hello Guys, Im currently in the process of designing and then building a robotic arm. And now im designing the electronics for it. They should be pretty simple "i hope". I've attached a picture of the circuit that I am currently designing on, and maybe you notice im not an electrical engineer...

Hello all, I have a Samsung washing machine noise filter that I think has gone bad, I will post a picture and I was hoping one of you could tell me if I was doing my testing correctly , sorry for the bad picture, I am drawing a diagram that will be flat and I will post it later, but my question...

My electrical engineering experience is minimal and in the general section as the background. I have one of those Chinese PCB boards that can take a 5V and 12V input on the same solder pad to run the whole device and also have a Type-C input. The maximum input on that device is 24V. I'm using...

Hey everyrone, i have a question regarding a PSU i have at home (once used for a 3d printer). Its a 200 watt PSU 230V AC 2-3A (i think) step down to 24V (8.8A). I was hoping to jerry rig it to a 24v 12kW brushed DC electric oil pump (used for an emergency oil pressure system), i understand this...

Hello, i have an issue with a 12v30A PSU: low output of 4v instead of 12v, SMPS transformer noise like low frequency issue. No short element in the secondary, RT/CT of tl 494 within specs, but i suspect the capacitor at VCC of TL494 : it is only 10mF and has only 7.5V. The DC output voltage...

Please can anyone help me determine what type and model of transistor this psu uses(voltage, amp, etc), the one it had were removed and I have no idea what Trans use D:

What's the purpose of each part of circuit circled in the picture bellow!?

I have a media cabinet which houses a bunch of media players/routers/alarm system etc. The target output voltages for each component is between 9V and 24V. This is currently powered by an LED power supply with a few step down buck converters to the target voltages. The LED power supply is very...