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Matthew's user avatar
Matthew
  • Member for 4 years, 8 months
  • Last seen more than a week ago
9 votes
3 answers
3k views

To pour, or not to pour? (And why?)

7 votes
2 answers
596 views

What constitutes "multiple designs" on a PCB?

4 votes
4 answers
1k views

Comparator with hysteresis; what resistors go where?

4 votes
3 answers
1k views

How can I get similar brightness out of individually driven LEDs?

3 votes
2 answers
940 views

What can I do about components with inadequate creepage?

2 votes
2 answers
811 views

Any way to test continuity of a potentially live circuit?

1 vote
0 answers
69 views

Overview of inrush current limiting (AC/DC convertor)

1 vote
1 answer
496 views

(Another) how do I choose an appropriate TVS for a relay?

1 vote
1 answer
92 views

How do you know if you need active cooling? [closed]

1 vote
6 answers
101 views

Driving N-bit display with two wires and ~N+1 bits?

1 vote
2 answers
132 views

Can a dual pole (mechanical) relay switch HVAC and LVDC at the same time?

1 vote
1 answer
77 views

Question about EMR coil surge suppression

1 vote
1 answer
407 views

RC delay; more resistance or more capacitance?

0 votes
2 answers
133 views

How to wire mixed-count groups of LEDs?

0 votes
4 answers
172 views

How will two parallel LEDs behave on a constant current source?

0 votes
5 answers
421 views

Failsafe for relay contact welding

0 votes
1 answer
207 views

How to design/build a relay-triggered "crowbar" circuit?

0 votes
1 answer
121 views

How to understand MOSFET "turn on" times?

0 votes
0 answers
115 views

Will this TVS protect my LED from inductor voltage surge?

0 votes
1 answer
253 views

Difference between D, D+Z and TVS for inductor surge suppression

0 votes
1 answer
59 views

How can I change this circuit to use "packaged" LEDs?

0 votes
2 answers
152 views

Abusing EPS connector to power LED's?

0 votes
4 answers
386 views

18/4 connector for repeated plugging and unplugging? [closed]

0 votes
2 answers
741 views

Is there such a thing as a fail-safe, low-power relay?

0 votes
1 answer
304 views

Should a start-stop interrupt positive or negative? (Why?)

-2 votes
2 answers
102 views

What wire to minimize my wiring loss?