All Questions
Tagged with capacitive switch-mode-power-supply
6 questions
0
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Soft-start design and performant with short-circuit test
I am working on a soft-start for a capacitive load. I using module QSB40024S24 to create 24V output. At first, I allowed the output of the module to connect directly to a capacitor array (21.4mF in ...
- 43
0
votes
1
answer
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Suggestion on Power supply design
I am looking for Transformerless power supply design. I have MCU 5V. and would like to drive 12V/24V relay with single LED.
i have 4 pots 10K/200k for timing
So i prefer 230VAC to 12V/24Vdc output ...
- 25
6
votes
3
answers
381
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Headphone Noise from Laptop SMPS
I have been facing an issue that has been a mystery to me for quite some time, and I wanted to see if someone here can potentially give me more insights on this so I can understand why it is happening....
- 61
6
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2
answers
1k
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Help understanding/selecting SMPS to drive capacitive load
I recently bought several SMPS buck converter supplies for a project. They all had about the same specs, typically 90-270VAC input, 12VDC output. Having an expected worst case continuous load of about ...
- 3,303
1
vote
1
answer
3k
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Eliminating ghost voltage and breaking ground loops in a system
The above illustration is a setup I use where amplifier outputs go to a data acquisition system through BNC cables. The data acquisition system is earth-grounded. Mains system voltage Line to Neutral ...
- 1,905
3
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2
answers
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Designing a Transformerless power supply
I am working on a transformerless PSU for maiking a 3nos.x3 watt led, each having forward voltage around 3.6v and current around 650-700ma.
I have worked on this kind of circuit:
I guess a 1uf ...
- 181