User Andy aka

143 votes

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What is the reason that the value "47" is so popular in electrical engineering?

answered May 2, 2013 at 21:47

93 votes

Why do banana plugs need these holes?

connector banana-jack

answered Sep 7, 2020 at 10:37

86 votes

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Reasons not to use a 741 op-amp?

operational-amplifier linear obsolescence

answered May 10, 2017 at 9:52

81 votes

Why is the Digital 0 not 0V in computer systems?

computer-architecture

answered Sep 11, 2019 at 10:10

68 votes

Is there a technical reason why most touch screens use glass rather than plastic?

touchscreen materials flexible durability plastic

answered May 9, 2016 at 8:17

60 votes

Ceramic caps vs electrolytic. What are the tangible differences in use?

capacitor design theory

answered May 6, 2016 at 10:01

56 votes

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Why is sine wave preferred over other waveforms?

ac sine

answered Feb 5, 2015 at 12:44

56 votes

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Is it ok to 'snake' the flow of my schematic?

circuit-design schematics best-practice drawing

answered Dec 16, 2018 at 17:17

55 votes

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Is ground connection in home electrical system really necessary?

ground grounding safety earth shock

answered Nov 25, 2020 at 13:15

53 votes

Moisture Trapped in IP66 Enclosure

enclosure humidity ip67

answered Aug 1, 2018 at 17:27

49 votes

How did old television screens with a light grey phosphor create the darker contrast parts of the display?

tv crt

answered Feb 7, 2021 at 17:05

49 votes

What is the purpose of the emitter resistor in a common emitter amplifier?

amplifier resistors common-emitter

answered Mar 28, 2021 at 10:18

49 votes

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Two resistors in series

resistors parallel series transformerless

answered Nov 16, 2016 at 18:05

46 votes

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Optical audio transmitter can't handle speech

audio transmitter laser phototransistor laser-diode

answered Feb 1, 2018 at 19:24

44 votes

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How to make a dummy load of 1000W - 2000W?

resistance

answered Nov 3, 2015 at 9:07

43 votes

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RF Energy Harvesting

rf dc energy-harvesting

answered Jun 12, 2015 at 9:06

43 votes

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Why does 1/4 wavelength have a ground plane and 1/2 wavelength needs none?

antenna microwave wave ground-plane wavelength

answered Feb 10, 2020 at 15:04

43 votes

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Why are there 3.15A fuses?

component-values

answered Jul 19, 2016 at 7:35

42 votes

Why do transformers use so many turns?

transformer

answered Feb 4, 2017 at 20:23

40 votes

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Why recommend tantalum over ceramic capacitor for voltage regulator?

capacitor voltage-regulator ceramic tantalum

answered Mar 29, 2021 at 9:19

40 votes

What does 232 signify in the RS232 standard?

rs232 rs485 rs422

answered Feb 1, 2017 at 11:58

39 votes

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Where did the value of 0.1uF for bypass capacitors come from?

capacitor bypass

answered May 26, 2015 at 14:04

38 votes

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Why is electricity consumption billed in watts and not amperes?

electricity watts ampere-hour

answered Apr 5, 2020 at 18:00

38 votes

What is a sine wave?

sine

answered May 23, 2018 at 12:02

37 votes

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What does a Bode plot represent and what is a pole and zero of a Bode plot?

transfer-function bode-plot frequency-response decibel pole-zeroplot

answered Apr 14, 2020 at 8:27

37 votes

How can a one million megohm resistor be useful?

resistors

answered Dec 11, 2016 at 12:36

36 votes

How can I measure the RPM of a Frisbee?

microcontroller pic

answered Jun 18, 2014 at 19:39

36 votes

Accepted

Can people act like antennas?

antenna coupling

answered Apr 18, 2016 at 7:52

35 votes

How are unbalanced coaxial cables used for broadcasting TV signals without any problems?

telecommunications coaxial stp

answered Sep 11, 2019 at 20:45

35 votes

Why is root mean square used when calculating average power, and not simply the average of voltage/current?

power-supply power circuit-analysis

answered Dec 7, 2016 at 10:07

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12,509 Answers

What is the reason that the value "47" is so popular in electrical engineering?

Why do banana plugs need these holes?

Reasons not to use a 741 op-amp?

Why is the Digital 0 not 0V in computer systems?

Is there a technical reason why most touch screens use glass rather than plastic?

Ceramic caps vs electrolytic. What are the tangible differences in use?

Why is sine wave preferred over other waveforms?

Is it ok to 'snake' the flow of my schematic?

Is ground connection in home electrical system really necessary?

Moisture Trapped in IP66 Enclosure

How did old television screens with a light grey phosphor create the darker contrast parts of the display?

What is the purpose of the emitter resistor in a common emitter amplifier?

Two resistors in series

Optical audio transmitter can't handle speech

How to make a dummy load of 1000W - 2000W?

RF Energy Harvesting

Why does 1/4 wavelength have a ground plane and 1/2 wavelength needs none?

Why are there 3.15A fuses?

Why do transformers use so many turns?

Why recommend tantalum over ceramic capacitor for voltage regulator?

What does 232 signify in the RS232 standard?

Where did the value of 0.1uF for bypass capacitors come from?

Why is electricity consumption billed in watts and not amperes?

What is a sine wave?

What does a Bode plot represent and what is a pole and zero of a Bode plot?

How can a one million megohm resistor be useful?

How can I measure the RPM of a Frisbee?

Can people act like antennas?

How are unbalanced coaxial cables used for broadcasting TV signals without any problems?

Why is root mean square used when calculating average power, and not simply the average of voltage/current?