All Questions
10
questions
0
votes
0
answers
140
views
How to reduce sinusoidal ripple output coming from SMPS?
I have an SMPS producing output of 12V,1Amps. It is giving a voltage ripple (I am not sure if ripple right term for this) as given in image.
I donot have permission to make any changes to this SMPS ...
- 83
1
vote
1
answer
70
views
How to avoid AC in cheap DC charger
I bought a cheap DC charger a couple of days back and I have been using it to charge my headphones and other small electronics.
I recently noticed that there is small amount of AC, less than 1V, ...
- 13
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
2
answers
753
views
DC ripple stabilizer. 3rd order low pass filter. How to supply op-amps properly
I have a cheap ac-dc adapter, but it outputs DC with a ripple.
It has variable output, so it can output 12, 14, 17, and so on up to 32V.
I measured output of ac-dc adapter with an Agilent multimeter, ...
- 45
0
votes
3
answers
1k
views
Choosing capacitance for recifier
So I'm trying to use a couple of rectifiers. Specifically, the "NTE5326" and the "36MB120A."
I've tried following videos on how to calculate for a smoothing-capacitor but to no avail.
If you use ...
- 159
1
vote
2
answers
683
views
DC voltage ripple help
I am new here and I realy need your help. For diplome at the end of my studying I am making the audio amplifier module (power amplifier, preamplifier, tone control, power supply, linear regulator) all ...
- 71
1
vote
1
answer
555
views
Standard 12 Volt DC fan for PC: how much AC ripple can support? Does ripple increase noise?
I want to know which is the mechanical effect to run a DC 12V brushless common fan with a very basic and poor power supply (just a diode plus a low value capacitor, no regulation at all). In principle,...
- 461
0
votes
2
answers
357
views
Full Wave Rectifier Ripple Problem
I have made a full wave rectifier circuit to obtain 5VDC, 9VDC and -9VDC. To prevent the ripple, i have selected C1 and C2 as 4uF which were shown below. I will use a 12V, 6W transformer to get AC ...
- 363
0
votes
1
answer
2k
views
Removing ripple in DC supply
I have an AC to 18v DC, 25MA, power supply (wall wart) that is used for a guitar flanger pedal. The supply generates some ripple noise into the pedal's audio (it is not there when using batteries). ...
- 9
0
votes
1
answer
5k
views
Capacitor Sizing for A Full Wave Bridge Rectifier?
Building my understanding of the issue from (First PSU - need help with capacitor size) (especially the comments/ripple wiki/several capacitor sizing webpages) the calculation for rectifying a full ...
- 403