All Questions
5
questions
7
votes
3
answers
112k
views
Full-wave bridge rectifier with capacitor filter and ripple voltage
According to various sources, the ripple voltage of a full-wave bridge rectifier is
$$ V_r = \frac{V_s}{2}fCR $$
where \$V_s\$ is the peak of the input voltage source, \$f\$ is the frequency, \$C\$ ...
- 1,015
12
votes
6
answers
5k
views
Ripple voltage filtering capacitor
I'm an self-taught high schooler who's trying to understand how filtering capacitors work. I've searched and read multiple websites trying to understand how filtering works. At the point where I am, I'...
- 311
7
votes
1
answer
13k
views
Ripple reduction with LC filter
This seems like it must be a common problem but I don't find a clear answer anywhere, maybe my approach is wrong.
I have a DC-DC regulator in my circuit, which has a ripple of 50mV at 200kHz, the ...
- 71
5
votes
3
answers
1k
views
Ripple rejection of capacitance multiplier when compared to linear regulators
There are some posts and discussions how a circuit popularly called a “capacitance multiplier” could reduce low frequency ripple noise (at 50/60 Hz or 100/120 Hz) and could perform better than common (...
- 1,589
3
votes
1
answer
2k
views
Sanity check: Input and output filter for a stacked pair of DC/DC converters
In my current project, I need voltages of +/- 30V and +/- 15V for analog control purposes. The current on the 30V rails is fairly limited, ca. 70mA max on one rail and <10mA on the other. The 15V ...
- 607