All Questions
15
questions
0
votes
1
answer
259
views
ZVS circuit to generate high DC voltage
I'm trying to design a high DC voltage generator to create a voltage differential between the upper and the lower part of a cloud chamber I'm building. I'm trying to use a ZVS circuit to amplify an ...
- 309
0
votes
1
answer
54
views
Strange simulation result: Can a rectifier diode conduct when the output terminal is open?
How does the output voltage build up for the below circuit when the terminal is open? Does LTSPICE assume any default node capacitance which gets charged- Not sure what causes the discharge/ripple in ...
- 3,032
1
vote
3
answers
114
views
How does the RMS voltage capture the time varying part in the conversion ratio of the half wave rectifier?
I am studying conversion ratio of a halfwave rectifier from here.
It says that
Conversion ratio (also called "rectification ratio", and confusingly, "efficiency") η is defined as ...
- 13
4
votes
3
answers
848
views
Capacitor as a ripple filter in the rectifier circuit - difference in charging and discharging time
Most of the times attached picture is used to depict the use of Capacitor as filter in the rectifier circuit. I guess, i understand the broad concept but I am struggling with the fact that charging ...
- 271
0
votes
2
answers
380
views
Why am I getting this oscilloscope reading? (Half wave rectifier)
I’m trying to use a half wave rectifier with a capacitor filter and instead of getting a ripple voltage at the output it’s giving a signal that looks like white noise(pic below). Any ideas?
(a signal ...
- 3
0
votes
1
answer
5k
views
How do you find the peak-to-peak ripple voltage of a full wave bridge rectifier?
The 32VRMS secondary of a transformer feeds a full wave rectifier and capacitor filter as shown in
the circuit.
The peak-to-peak ripple of the output voltage of this circuit needs to be less than 1V ...
- 131
0
votes
2
answers
2k
views
What do I and V mean in C = It/V?
I am trying to determine what value capacitor I need to put after the full wave rectifier to get a smooth voltage for charging my battery. However, I don't understand which current and voltage do the ...
- 333
1
vote
3
answers
2k
views
Vdc in ripple factor
V_p(rect) is the rectified unfiltered peak voltage
V_r(pp) is the peak-to-peak voltage after filtering by a capacitor
Here is a picture:
V_r(pp) is given by the expression:
Which I have no problem ...
- 161
2
votes
2
answers
2k
views
Full wave rectifier with a high DC offset voltage?
For a full wave rectifier, can it rectify an AC wave with a DC offset above the rated voltage of its diodes rated voltage if the peak to peak voltage of the wave is within its rated voltage? Like if ...
- 507
-2
votes
3
answers
2k
views
What is generic formula for min and max levels of rectified AC voltage?
For example, if i have 1 phase AC voltage with 1 volt peak level and rectify it., i would get some pulsating voltage V = abs(sin(t+0*pi)). Its minimum is 0 volts ...
user197437
1
vote
1
answer
2k
views
Interpreting the ripple curve of a half wave rectifier
While reading about how a half wave rectified output is filtered using a capacitor, I came across the following waveforms:
corresponding to the circuit:
In the interval from 0 to , the diode is ...
- 13
2
votes
3
answers
2k
views
What is the Best Way to Reduce High Power Three Phase Rectifier Ripple?
If a three-phase 220V AC @ 50Hz(three lines having 127V RMS voltage if measured to neutral each) mains supply is rectified with a standard 6-diode rectifier looks like this:
I believe if 25 amps is ...
- 55
3
votes
3
answers
33k
views
Rectifier ripple voltage formula
So I thought the ripple voltage was approximated by the formula
Vr,pp = Vp / fRC
for a half-wave rectifier, and Vp/2fRC for a full-wave.
Yet simulation shows ...
- 241
5
votes
1
answer
2k
views
What is a capacitor ripple current?
Suppose I have a simple full wave bridge rectifier, with resistive load. Is capacitor ripple current a charging or discharging current? Or maybe it is an avarage/RMS of any current flowing through a ...
- 497
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