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41 votes

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How can I use a 2N2222 transistor as a temperature sensor?

answered Oct 4, 2020 at 2:34

11 votes

What is the ideal method of sensing whether 4 points on the bottom of a device are all depressed to indicate contact?

answered May 8, 2022 at 5:43

5 votes

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What kind of diode is this?

answered Oct 13, 2020 at 2:22

4 votes

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Is there a way to prevent the random state of a shift register when power is applied?

answered Nov 1, 2020 at 4:28

2 votes

I bought a Li-ion battery which was deeply discharged, now what?

answered Nov 4, 2020 at 21:59

2 votes

How to get a 1 clock period pulse from a constant signal clock input on every 64 clocks?

answered Jan 18, 2021 at 20:27

2 votes

Accepted

How can we know that when n1 and n2 is 1, the output is 0? What makes the circuit a NAND?

answered Jul 11, 2022 at 15:44

1 vote

Short-Circuit Protection for 3-6 Volts AA batteries

answered Sep 25, 2020 at 5:27

1 vote

Need help making STM32F303 board

answered Apr 2, 2021 at 9:07

1 vote

How do I control multiple 4 pin LEDs with minimum GPIO pins?

answered Oct 6, 2020 at 8:08

1 vote

How to use a Bluetooth-controlled relay to simulate a button press on a garage door remote?

answered Oct 6, 2020 at 8:19

0 votes

Maximum length of WS2815 strips

answered Oct 16, 2020 at 16:34

0 votes

How can I make my flyback converter discharge immediately?

answered Oct 5, 2020 at 7:06

0 votes

Soldering crystals through wires

answered Oct 5, 2020 at 7:09

0 votes

Debugging LED with DMM

answered Oct 5, 2020 at 15:08

0 votes

For a Zener diode voltage regulator circuit: Why can't you place the resistor after the Zener diode?

answered Apr 28, 2021 at 19:31

0 votes

How to prevent a Lipo/Li-Ion-Battery from catching fire after a complete self discharge with a following accidentally recharge

answered Jan 5, 2021 at 17:17

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17 Answers

How can I use a 2N2222 transistor as a temperature sensor?

What is the ideal method of sensing whether 4 points on the bottom of a device are all depressed to indicate contact?

What kind of diode is this?

Is there a way to prevent the random state of a shift register when power is applied?

I bought a Li-ion battery which was deeply discharged, now what?

How to get a 1 clock period pulse from a constant signal clock input on every 64 clocks?

How can we know that when n1 and n2 is 1, the output is 0? What makes the circuit a NAND?

Short-Circuit Protection for 3-6 Volts AA batteries

Need help making STM32F303 board

How do I control multiple 4 pin LEDs with minimum GPIO pins?

How to use a Bluetooth-controlled relay to simulate a button press on a garage door remote?

Maximum length of WS2815 strips

How can I make my flyback converter discharge immediately?

Soldering crystals through wires

Debugging LED with DMM

For a Zener diode voltage regulator circuit: Why can't you place the resistor after the Zener diode?

How to prevent a Lipo/Li-Ion-Battery from catching fire after a complete self discharge with a following accidentally recharge