User Simon Fitch

69 votes

Accepted

Why are there three pins in this relay diagram?

answered Sep 16, 2021 at 8:56

40 votes

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H-Bridge blows the fuses in my house

answered Mar 15, 2023 at 7:12

39 votes

Why are kiloohm resistors more used in op-amp circuits?

answered Jun 5, 2023 at 5:27

29 votes

Accepted

How many capacitors can make a battery?

answered Aug 18, 2023 at 5:38

24 votes

Accepted

What is the purpose of an electrolytic capacitor in this small electronics project?

answered Oct 27, 2022 at 17:19

24 votes

Oscilloscope low side connection

answered Aug 25, 2021 at 2:07

22 votes

Has anyone measured what a high-impedance pin looks like?

answered Mar 7, 2023 at 6:21

22 votes

Accepted

Why is there a voltage difference between these two grounds?

answered Aug 27, 2023 at 13:47

22 votes

Why does this battery use 4.2 V when its nominal voltage is 3.7 V?

answered Jun 3 at 12:05

22 votes

Accepted

Will this short circuit to turn off an LED drain the battery?

answered Jun 4 at 11:00

21 votes

Function of capacitor on the output of a bridge rectifier

answered Feb 22 at 7:38

21 votes

Guard line preventing leakage current

answered Jan 23 at 2:32

21 votes

Accepted

Instrumentation Amplifier with a gain of 1 doesn't output a different signal

answered Sep 22, 2021 at 3:00

21 votes

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Can trying to draw too much current from alkaline batteries damage them?

answered Oct 31, 2021 at 3:25

20 votes

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Voltage selector design problem

answered Jul 24, 2022 at 13:02

20 votes

MOSFET overheating in Arduino heating pad project

answered Apr 13, 2023 at 6:52

19 votes

With this AND gate made of transistors, why does the LED need a resistor in parallel instead of in series?

answered Aug 3, 2023 at 5:24

19 votes

Accepted

Why is the MOSFET in this fan control circuit overheating?

answered Jul 18 at 19:58

17 votes

Will this mains disconnect circuit work?

answered Jun 29, 2022 at 14:19

17 votes

Are there integrated logic gates "AND with one inverted input"?

answered Sep 14, 2021 at 22:20

16 votes

2N2222 burning out in the lab at 22 V

answered Nov 3, 2022 at 13:46

15 votes

Accepted

Does a resistor between two pairs of series resistors affect the equivalent resistance?

answered Mar 9, 2023 at 5:33

15 votes

Accepted

Need help understanding schematics in LT1019 datasheet

answered Oct 1, 2021 at 13:01

14 votes

Why don't LEDs have built-in resistors?

answered Sep 27, 2021 at 10:52

14 votes

How do capacitors stop voltage spikes?

answered Dec 29, 2023 at 3:58

14 votes

Is it a good idea to perform I2C Communication in the ISR?

answered Sep 5 at 12:46

13 votes

Accepted

Could a very high voltage and very low current allow a non-superconducting magnetic energy storage system?

answered Jan 14 at 18:26

13 votes

Accepted

What are pull-up resistors for and how are their values calculated?

answered Aug 10, 2023 at 14:05

13 votes

Accepted

Non-inverting op-amp

answered Feb 4, 2023 at 15:46

13 votes

Accepted

Inverting op-amp problem

answered Apr 19, 2023 at 3:55

Stack Exchange Network

1,241 Answers

Why are there three pins in this relay diagram?

H-Bridge blows the fuses in my house

Why are kiloohm resistors more used in op-amp circuits?

How many capacitors can make a battery?

What is the purpose of an electrolytic capacitor in this small electronics project?

Oscilloscope low side connection

Has anyone measured what a high-impedance pin looks like?

Why is there a voltage difference between these two grounds?

Why does this battery use 4.2 V when its nominal voltage is 3.7 V?

Will this short circuit to turn off an LED drain the battery?

Function of capacitor on the output of a bridge rectifier

Guard line preventing leakage current

Instrumentation Amplifier with a gain of 1 doesn't output a different signal

Can trying to draw too much current from alkaline batteries damage them?

Voltage selector design problem

MOSFET overheating in Arduino heating pad project

With this AND gate made of transistors, why does the LED need a resistor in parallel instead of in series?

Why is the MOSFET in this fan control circuit overheating?

Will this mains disconnect circuit work?

Are there integrated logic gates "AND with one inverted input"?

2N2222 burning out in the lab at 22 V

Does a resistor between two pairs of series resistors affect the equivalent resistance?

Need help understanding schematics in LT1019 datasheet

Why don't LEDs have built-in resistors?

How do capacitors stop voltage spikes?

Is it a good idea to perform I2C Communication in the ISR?

Could a very high voltage and very low current allow a non-superconducting magnetic energy storage system?

What are pull-up resistors for and how are their values calculated?

Non-inverting op-amp

Inverting op-amp problem