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Dave Tweed
  • Member for 9 years, 11 months
  • Last seen this week
  • Lowell, MA
433 votes
Accepted

What is it that strips vocals from audio when a 1/8" audio jack is partially unplugged?

85 votes
Accepted

Why did LEDs take so long to appear as light bulbs?

73 votes

Why are NAND gates used to make AND gates in computers?

72 votes

Do dead weight 'components' exist?

68 votes
Accepted

Why do CRTs have 3 electron guns?

65 votes

Compute the minimum number of 120Ω resistors to get 80Ω of resistance?

61 votes
Accepted

Why are FPGAs so expensive?

56 votes
Accepted

Why does an LED have to be a diode?

56 votes
Accepted

"Remove After Washing" on Piezo Buzzer

55 votes

How did 455 kHz end up being a commonly used IF (intermediate frequency)?

54 votes
Accepted

Am I insane to question that only with a closed path can electrons move?

52 votes
Accepted

Can a radio transmitter somehow detect the number of receivers in its area?

51 votes
Accepted

What's special about 14.31818 MHz?

51 votes
Accepted

What's the point in a preamp?

50 votes

Why is the time constant 63.2% and not 50% or 70%?

48 votes
Accepted

Can a premium HDMI cable outperform a standard cable?

47 votes

How do I power/wire something that is rotating constantly WITHOUT extra batteries?

46 votes

Who receives the value returned by main()?

46 votes
Accepted

Why is it desirable in an amplifier to have high input impedance and low output impedance?

43 votes

Why does F + F' = 1?

42 votes
Accepted

Why put a step-down transformer after a vacuum tube in an a valve amplifier?

42 votes
Accepted

Why must some HDMI repeaters know the cable length?

40 votes
Accepted

VHDL interview question - detecting if a number can be divided by 5 without remainder

40 votes
Accepted

Why would a Intel 8080 chip be destroyed if +12 V is connected before −5 V?

40 votes
Accepted

What's the meaning of Electrical Inches?

40 votes

How did old WW2-era radars accurately measure time delay and integrate this into an oscilloscope?

38 votes

How does a 40 Gbit/s Ethernet interface process packets in silicon?

38 votes
Accepted

Does anyone remember this article about the Euclidean Algorithm?

38 votes

Why do we use polarized capacitors?

37 votes

How to secure cables to a PCB

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