Tagged Questions

2
votes
2answers
890 views

Power filter design

In my circuit design, I use a power supply filter design commonly used in my company, i.e. a pi filter which has a big electrolytic cap(10uF), an inductor and a small ceramic capacitor(100nF) at the ...
5
votes
3answers
288 views

Is it possible to calculate effective value of a signal from its average value?

I have a signal which I want to calculate its effective value. The signal is a voltage value read on a 33.3m\$ \Omega \$ resistor connected series to a 220V AC power line. My aim is to calculate the ...
2
votes
2answers
598 views

How to correctly simulate this filter?

I am trying to design a low-pass filter for a 24V, DC, 10A power line to suppress EMI, RF interference and noise in a bus. There is no ground(chassis). I am trying to simulate this filter that was ...
3
votes
1answer
461 views

Designing a low-pass filter

I want to design a low pass filter with common-mode choke that has a cutoff frequency of 100 Hz. This is going to be used in a bus 24V DC power system that will deliver 10A to the load. I want to use ...
2
votes
2answers
2k views

Mains Hum Filter

Are there any chips or simple circuits available for removing the 50/60Hz mains hum from a regular power supply unit? So I've got a few bits of audio equipment that have bad PSUs and they have a bit ...