All Questions
5
questions
1
vote
1
answer
125
views
Burning sound from the PSU
I am trying to make a bench power supply from an old 350W PC PSU
that provides 4 lines
3.3V 8A
5V 9A
12V 11A
-12V 1.5A
Here is the connections diagram:
I used this step down module to be able the ...
0
votes
2
answers
252
views
DC to DC voltage step down converter on PCB
I'm a beginner and I'm designing a PCB where I want to power my PCB from a 12-24 V DC car charger.
On PCB itself, I want to use 5 V and 3.3 V for different components, so for this purpose I'm trying ...
- 99
2
votes
1
answer
279
views
5V and 12V derived from a regulated 12V supply? Buck converter for 5V, in parallel with 12V load?
Apologies up front — this is super basic, but I’m sleep deprived and on a deadline for a personal project.
This is all DC. I have a 12 V input (via a wall-wart). I need 5 V to power some electronics (...
- 132
-1
votes
1
answer
205
views
how to lower the LTC3780's voltage [closed]
So I bought the LTC3780 Step Up/Down Constant Voltage Power Supply from a cheap chinese store on Aliexpress. The page said 1v-32v at a max of 10amps. Although, when I received it and tested it today, ...
-1
votes
2
answers
7k
views
UC3843 buck converter
I want to build an adjustable buck converter with uc3843 ic.
I built up a circuit in LTSpice for simulating.
The problem is that, i want to adjust the output from 3v to near input voltage.
With the ...
- 1