User Sim Son

11 votes

How do I determine whether a switch can handle the power/current in a circuit?

answered Oct 17, 2020 at 21:07

11 votes

Solder won't stick to metal tab, no matter what I do

answered Apr 2, 2021 at 14:21

11 votes

Accepted

Why don't most electrons hit the anode in a cathode ray tube or electron gun?

answered Jun 1, 2022 at 12:12

9 votes

Accepted

Why do LEDs emit less light as they get hotter?

answered Apr 1, 2022 at 11:12

7 votes

Accepted

Can I short VBUS and GND in a 6-circuit USB-C receptacle?

answered Jun 1, 2022 at 12:18

6 votes

Through holes vs pads for hand soldering

answered Jun 30, 2022 at 16:24

6 votes

Supply 3.3 V from a 5 V phone charger

answered Nov 24, 2022 at 6:57

6 votes

How fast is a photoresistor?

answered Nov 8, 2020 at 11:20

5 votes

What is the problem in this op-amp oscillator that oscilloscope does not show any oscillations?

answered Feb 19, 2022 at 17:34

4 votes

Sophisticated order to connect the poles for a jump start of the car battery

answered Jan 6, 2021 at 11:49

4 votes

Accepted

Problem when using MOSFET to switch on/off voltage regulator

answered Mar 7, 2021 at 21:08

4 votes

Accepted

Polarity of TVS diode is unclear

answered Sep 21, 2021 at 15:54

4 votes

I don't know what voltage to use for my Arduino Uno

answered Oct 17, 2021 at 13:26

4 votes

Help identifying 8 pin connector

answered Dec 19, 2019 at 22:02

4 votes

How solder paste is different from tin when soldering?

answered Aug 20, 2020 at 16:09

3 votes

Accepted

Parallel 1-10 V dimming of multiple LED drivers

answered Sep 20, 2021 at 15:29

3 votes

Have to drive 4 motors with a Raspberry Pi Pico. Is my schematic correct?

answered Aug 5, 2021 at 18:59

3 votes

Can LabVIEW be used instead of an oscilloscope to measure signals?

answered Dec 14, 2020 at 20:21

3 votes

Current measurement in high side with a range of 200uA and 200mA

answered Feb 19, 2022 at 17:46

3 votes

Operating of FET in linear region

answered Mar 3, 2022 at 20:38

3 votes

MCU working at 3.3V and RS485 driver at 5V - how does this circuit work?

answered Apr 15, 2022 at 14:04

3 votes

Help identifying cable

answered May 6, 2022 at 22:36

3 votes

Preventing power LED runaway with voltage and PWM

answered Sep 23, 2022 at 15:13

3 votes

Accepted

AC adapter makes high pitched noise when a notebook is turned off or asleep

answered Mar 31, 2022 at 20:07

2 votes

Can a 5mW laser diode's output be doubled for a short time (5s)?

answered Jul 6, 2022 at 17:05

2 votes

Ai Thinker ESP32-CAM max input voltage

answered May 10, 2022 at 14:27

2 votes

Accepted

Do I need RTC while I'm using NTP?

answered Apr 28, 2022 at 20:37

2 votes

Is a high resistor value between GPIO pads acceptable?

answered Apr 15, 2022 at 14:33

2 votes

How is current the derivative of charge

answered Apr 21, 2022 at 3:47

2 votes

What's going wrong with my solder paste / mask?

answered Mar 23, 2022 at 13:15

Stack Exchange Network

101 Answers

How do I determine whether a switch can handle the power/current in a circuit?

Solder won't stick to metal tab, no matter what I do

Why don't most electrons hit the anode in a cathode ray tube or electron gun?

Why do LEDs emit less light as they get hotter?

Can I short VBUS and GND in a 6-circuit USB-C receptacle?

Through holes vs pads for hand soldering

Supply 3.3 V from a 5 V phone charger

How fast is a photoresistor?

What is the problem in this op-amp oscillator that oscilloscope does not show any oscillations?

Sophisticated order to connect the poles for a jump start of the car battery

Problem when using MOSFET to switch on/off voltage regulator

Polarity of TVS diode is unclear

I don't know what voltage to use for my Arduino Uno

Help identifying 8 pin connector

How solder paste is different from tin when soldering?

Parallel 1-10 V dimming of multiple LED drivers

Have to drive 4 motors with a Raspberry Pi Pico. Is my schematic correct?

Can LabVIEW be used instead of an oscilloscope to measure signals?

Current measurement in high side with a range of 200uA and 200mA

Operating of FET in linear region

MCU working at 3.3V and RS485 driver at 5V - how does this circuit work?

Help identifying cable

Preventing power LED runaway with voltage and PWM

AC adapter makes high pitched noise when a notebook is turned off or asleep

Can a 5mW laser diode's output be doubled for a short time (5s)?

Ai Thinker ESP32-CAM max input voltage

Do I need RTC while I'm using NTP?

Is a high resistor value between GPIO pads acceptable?

How is current the derivative of charge

What's going wrong with my solder paste / mask?