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Dat
  • Member for 5 years
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  • Hà Nội, Việt Nam
9 votes
4 answers
1k views

Basic electronics: Transistor switch

8 votes
1 answer
2k views

What is the purpose of a diode connected to the pins of a motor? [duplicate]

5 votes
2 answers
1k views

What is the purpose of this extra capacitor in a notch filter?

4 votes
3 answers
930 views

How can I solve this simple BJT circuit?

2 votes
1 answer
95 views

How does this DC offset sinwave input work?

2 votes
1 answer
243 views

How does this pentode power amplifier (old technology, 1960s) work?

1 vote
2 answers
815 views

What does 75A mean for this motorcycle battery?

0 votes
2 answers
110 views

What is the type of this transducer?

0 votes
0 answers
549 views

How to tell a battery is LiPo or Li Ion (based on apperance)?

0 votes
1 answer
138 views

How does this circuit generate a high frequency signal?

0 votes
3 answers
282 views

How is this high pass filter?

0 votes
1 answer
171 views

Why do two different approaches give different results about choosing resistances for voltage divider of emitter follower circuit?