All Questions
7 questions
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votes
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Does a transformer have different primary and secondary PFs?
I tried connecting two energy meters on primary and secondary and found that they were showing different values when a load was connected to the transformer.
Does a transformer have two different PFs, ...
- 73
2
votes
2
answers
207
views
Can transformers be used to adjust capacitors?
It seems capacitors are subject to a "quality triangle", where we can only pick two out of three desirable traits:
High voltage rating
High capacitance
Cheap
For example, a high-voltage high-...
- 238
0
votes
1
answer
112
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Coil Damage Worries [duplicate]
I was trying to make a hv generator from an ignition coil. I bought one from the local mechanics, and put it in a circuit in series with a capacitor and a light dimmer connected to mains 240v. The ...
- 90
1
vote
3
answers
50
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Get 1,5U voltage on the transformer
I have a transformer with a midpoint that gives a voltage of 1U at the ends of its secondary winding. Can I, using only capacitors and diodes get a DC voltage of about 1.5U (but less than 2U)? If so, ...
- 11
0
votes
2
answers
939
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Need help DC biasing an AC source
I am trying to simulate this circuit I saw here:
However, when I simulate it, the "mid-point" does not behave like the blue line in the above picture. You can check the simulation here:
Is the ...
- 471
-1
votes
2
answers
95
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In this current therapy circuit design how to reduce output current [closed]
Here, I plan to switching two N-type MOSFET by using 12 V step up center tap transformer (1:10). My output is around 120 Vac. Its great but the current is nearly 17.5 A. How can I reduce the current ...
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1
vote
1
answer
133
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Question on capacitive circuit in practice
If we were to build a circuit, let's say with a power source of 120V AC going into a transformer which steps that up to 10kV @ 30mA, the output of which would be connected to a capacitor with a ...
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