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Questions tagged [ac-signal]

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2 votes
2 answers
317 views

Calculating Transformer Turn Ratio with a low coupling coefficient

I have a transformer with a turns ratio of 6:24 (primary to secondary turns). I measured the primary inductance to be 3.05 microhenries (uH) with the secondary open and 1.725 uH with the secondary ...
Neil's user avatar
  • 75
0 votes
0 answers
36 views

Transistor failure in multi channel high frequency AC signals

[Intro] To begin with, I am an undergraduate electrical engineering student working on my senior project. I wanted to make a wireless charging pad like that of Tesla's wireless charging platform and ...
Martin's user avatar
  • 1
0 votes
1 answer
109 views

Thermal voltage when applied AC voltage

I know what thermal voltage is and what it does to the semiconductor, ie. it's the agitated electrons producing electric fields proportional to the absolute temperature. But, like the "r'e", ...
Ruvian de Césaro's user avatar
0 votes
3 answers
2k views

Analysis of Preamp circuit

I found this schematic (in Spanish) and annotated it with my interpretation. Anyone care to correct me or add?
user245187's user avatar
0 votes
1 answer
405 views

Measuring AC signals from sensors

I have a non invasive current sensor SCT 013-030 and I connected it to an AVR mcu using this circuit below (circuit 1). Circuit 1. simulate this circuit – Schematic created using CircuitLab ...
MrBit's user avatar
  • 2,053