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Pzy
  • Member for 4 years, 4 months
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34 votes
7 answers
81k views

Why V rms instead of V average?

  • 975
15 votes
2 answers
3k views

How to rinse container used for ferric chloride etching?

  • 1,063
12 votes
6 answers
37k views

Need help calculating resistance for transistor base

  • 443
9 votes
3 answers
59k views

How to calculate resistor and capacitor size for snubber circuits

  • 101
6 votes
3 answers
1k views

Advice on BNC cables for beginners electronic lab

5 votes
8 answers
67k views

How to Calculate the average of a Square Wave?

5 votes
1 answer
5k views

how to calculate resistor value for optocoupler - 230V [duplicate]

  • 63
4 votes
3 answers
7k views

Understanding voltage and current of a phototransistor w/ collector resistor

3 votes
2 answers
3k views

Understand this filter and biasing circuit

3 votes
3 answers
21k views

What's the easy way to measure a DC hobby motor's inductance?

  • 11.4k
2 votes
1 answer
2k views

What can I use to supply 220V DC to this motor?

  • 123
2 votes
2 answers
6k views

How to Compute bias Resistor for phototransistor Value?

1 vote
2 answers
7k views

On an isolation transformer, were do ground pins go? [closed]

1 vote
1 answer
1k views

Load resistor value for phototransistor switch

  • 125