User vir - Electrical Engineering Stack Exchange

65 votes

Accepted

Why does my 120V 40W lightbulb only have 26 ohms across it?

answered Jun 18, 2021 at 18:07

38 votes

Why is there sand or salt in this electrical circuit?

answered Mar 23, 2023 at 19:13

36 votes

Accepted

What is "Arduino Optocoupler Disease"?

answered May 29 at 23:40

24 votes

SMD 0402 resistor flipped on its side

answered Feb 21, 2022 at 17:29

22 votes

Could an uninterruptible power supply for energy intensive appliances balance the power draw and help my breaker stop tripping?

answered May 3, 2021 at 17:11

18 votes

Accepted

Is it normal that a 12 V DC motor changes its RPM depending on its orientation?

answered Dec 21, 2021 at 20:43

16 votes

Accepted

What type of plug is this?

answered Dec 10, 2021 at 19:56

16 votes

What does (number * number) mean in a pin symbol within electronics schematic?

answered Oct 26, 2022 at 21:01

15 votes

Accepted

Guess power from board?

answered Feb 21, 2022 at 20:48

15 votes

Color LEDs and voltage: why the discontinuity on blue?

answered Aug 2, 2021 at 17:16

14 votes

Accepted

Can I increase the output capacitance of a DCDC beyond the specified maximum?

answered Dec 15, 2021 at 17:43

12 votes

Accepted

Pull-up and pull-down resistor on one trace

answered Jan 25, 2022 at 17:29

12 votes

Problem with equivalent resistance

answered Jun 7, 2022 at 19:12

11 votes

Accepted

How to read "golden fingers" on drawing?

answered Sep 30, 2022 at 16:52

11 votes

Are GX ("aviation") connectors unsafe for high voltages?

answered Nov 5, 2023 at 20:58

10 votes

Accepted

What kind of connector is this? Some kind of Molex?

answered Oct 11, 2022 at 21:42

10 votes

Accepted

Power MOSFET boards without capacitors?

answered Dec 20, 2022 at 20:42

10 votes

Voltage in a Short Circuit

answered Jun 27, 2023 at 18:52

10 votes

Accepted

Why is the collector very lightly doped in a bipolar junction transistor?

answered Feb 25, 2022 at 17:23

9 votes

1500W wirewound resistor tripping house fuse 20A / 120V

answered Jun 16, 2022 at 16:57

9 votes

Running 15 amps through a 10 amp switch to power a 13 amp circuit?

answered Jun 22, 2022 at 17:34

9 votes

Confused about MW to MWh conversion

answered Aug 18, 2022 at 21:32

9 votes

Accepted

Why do resistors "draw" current?

answered Nov 1, 2021 at 21:52

9 votes

De-soldering Through-Hole Solder

answered Nov 10, 2020 at 20:37

9 votes

Accepted

What do dashed lines mean in the schematic?

answered Apr 28, 2023 at 17:02

9 votes

Accepted

Manufacturer amperage rating for cables VS ampacity chart

answered Feb 13, 2023 at 22:33

9 votes

Why is op-amp buffer used at input to ADC?

answered Aug 2, 2023 at 22:29

8 votes

Why are PPTC based fuses not used in power sockets?

answered Nov 20, 2023 at 20:08

8 votes

Accepted

Light emitting transistors on chip to reduce heat

answered Feb 18 at 22:48

8 votes

Accepted

I'm trying to create a clock. Rate my first schematic design

answered Feb 25 at 21:55

Stack Exchange Network

672 Answers

Why does my 120V 40W lightbulb only have 26 ohms across it?

Why is there sand or salt in this electrical circuit?

What is "Arduino Optocoupler Disease"?

SMD 0402 resistor flipped on its side

Could an uninterruptible power supply for energy intensive appliances balance the power draw and help my breaker stop tripping?

Is it normal that a 12 V DC motor changes its RPM depending on its orientation?

What type of plug is this?

What does (number * number) mean in a pin symbol within electronics schematic?

Guess power from board?

Color LEDs and voltage: why the discontinuity on blue?

Can I increase the output capacitance of a DCDC beyond the specified maximum?

Pull-up and pull-down resistor on one trace

Problem with equivalent resistance

How to read "golden fingers" on drawing?

Are GX ("aviation") connectors unsafe for high voltages?

What kind of connector is this? Some kind of Molex?

Power MOSFET boards without capacitors?

Voltage in a Short Circuit

Why is the collector very lightly doped in a bipolar junction transistor?

1500W wirewound resistor tripping house fuse 20A / 120V

Running 15 amps through a 10 amp switch to power a 13 amp circuit?

Confused about MW to MWh conversion

Why do resistors "draw" current?

De-soldering Through-Hole Solder

What do dashed lines mean in the schematic?

Manufacturer amperage rating for cables VS ampacity chart

Why is op-amp buffer used at input to ADC?

Why are PPTC based fuses not used in power sockets?

Light emitting transistors on chip to reduce heat

I'm trying to create a clock. Rate my first schematic design