User Kevin White

84 votes

Accepted

Why do fire and security systems run at 27.6 V?

answered Jun 1, 2021 at 17:59

41 votes

What does a "fork" symbol mean on a schematic?

answered Jun 3, 2021 at 22:57

41 votes

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What set the speed in a cassette tape recorder?

answered May 29, 2017 at 23:49

39 votes

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Why is it dangerous use a coiled extension cord?

answered Oct 1, 2015 at 0:54

30 votes

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Do power plants supply their own electricity?

answered Dec 9, 2020 at 23:52

28 votes

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Why does battery voltage slowly return to the open voltage?

answered Sep 15, 2022 at 22:50

28 votes

Power supply - purpose of the capacitor on the side of the transformer before full bridge rectifier

answered Oct 23, 2019 at 18:36

27 votes

Why did this device go bang?

answered Sep 9, 2020 at 18:57

25 votes

Are there any microcontrollers that do not require an external clock source?

answered Oct 25, 2022 at 18:35

22 votes

Why are the transformer windings in series with line and load in this circuit?

answered Sep 25, 2017 at 23:07

22 votes

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Help understanding this LED lighting transistor circuit

answered Feb 9, 2017 at 16:42

21 votes

Identifying Source of Periodic Artifact at Op-Amp Output

answered Dec 1, 2016 at 1:52

20 votes

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One of four MOSFET in parallel heating too much

answered Apr 19, 2022 at 16:06

20 votes

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Why is there a diode on the RX pin of the Adafruit Ultimate GPS board?

answered Jan 13, 2019 at 1:00

19 votes

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Struggling to understand zero cross detecting circuit

answered Nov 21, 2019 at 1:50

17 votes

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What is this bridge like component?

answered Dec 7, 2021 at 17:10

16 votes

How do professional designs compensate for offset voltage in opamps?

answered Sep 14, 2020 at 22:17

16 votes

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Rail-to-rail op-amp only reaches 90% of VCC, works sometimes, not everytime

answered Jun 8, 2019 at 21:57

16 votes

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Why do cell phones sometimes interfere with amplifiers

answered May 3, 2017 at 23:17

15 votes

Can MOSFET exceed breakdown voltage without being permanently damaged?

answered Jun 17, 2021 at 17:21

14 votes

Why does this small lithium ion battery have a different voltage than larger lithium ion cells?

answered Oct 28, 2021 at 21:11

14 votes

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Lead Acid AGM battery testing - Why am I testing it this way?

answered Dec 11, 2020 at 1:26

14 votes

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What is the purpose of this NMOS transistor on an I/O pin?

answered Oct 31, 2017 at 22:26

14 votes

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Why the extra transistors in this current mirror?

answered Mar 15, 2017 at 21:03

13 votes

When do we have to use an analog oscilloscope?

answered May 3, 2020 at 18:10

13 votes

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Do you have to use an instrumentation amplifier to measure voltage across a 0.01 ohm shunt?

answered Sep 16, 2021 at 19:35

13 votes

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How does a gold leaf electroscope measure voltage?

answered May 27, 2022 at 18:37

13 votes

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What is the purpose of the IR-diode Cover on Remote Controls?

answered Oct 17, 2015 at 21:18

13 votes

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White LED W/ 3V or less?

answered Oct 10, 2015 at 23:35

13 votes

What information exactly does an instruction cache store?

answered May 13, 2019 at 17:01

Stack Exchange Network

956 Answers

Why do fire and security systems run at 27.6 V?

What does a "fork" symbol mean on a schematic?

What set the speed in a cassette tape recorder?

Why is it dangerous use a coiled extension cord?

Do power plants supply their own electricity?

Why does battery voltage slowly return to the open voltage?

Power supply - purpose of the capacitor on the side of the transformer before full bridge rectifier

Why did this device go bang?

Are there any microcontrollers that do not require an external clock source?

Why are the transformer windings in series with line and load in this circuit?

Help understanding this LED lighting transistor circuit

Identifying Source of Periodic Artifact at Op-Amp Output

One of four MOSFET in parallel heating too much

Why is there a diode on the RX pin of the Adafruit Ultimate GPS board?

Struggling to understand zero cross detecting circuit

What is this bridge like component?

How do professional designs compensate for offset voltage in opamps?

Rail-to-rail op-amp only reaches 90% of VCC, works sometimes, not everytime

Why do cell phones sometimes interfere with amplifiers

Can MOSFET exceed breakdown voltage without being permanently damaged?

Why does this small lithium ion battery have a different voltage than larger lithium ion cells?

Lead Acid AGM battery testing - Why am I testing it this way?

What is the purpose of this NMOS transistor on an I/O pin?

Why the extra transistors in this current mirror?

When do we have to use an analog oscilloscope?

Do you have to use an instrumentation amplifier to measure voltage across a 0.01 ohm shunt?

How does a gold leaf electroscope measure voltage?

What is the purpose of the IR-diode Cover on Remote Controls?

White LED W/ 3V or less?

What information exactly does an instruction cache store?