User Ariser

29 votes

Why are there only RGB and RGBW-LEDs, but none with more chips inside one housing?

answered Dec 8, 2015 at 13:45

17 votes

Why are the three component LEDs in an RGB LED so unbalanced?

answered Nov 29, 2015 at 10:44

14 votes

Why is kerosene stopping my red LEDs from illuminating?

answered Aug 16, 2016 at 15:44

10 votes

Importance of electrolytic capacitor size

answered Sep 2, 2019 at 19:20

9 votes

Add ground earth to a Chinese music player

answered Jul 5, 2016 at 10:08

9 votes

Connector Problem. How to conveniently connect with cell-phone LiPo batteries

answered Jan 1, 2015 at 13:35

9 votes

Flash a light in a specific pattern

answered Aug 14, 2015 at 19:11

8 votes

Real device with derivative transfer function

answered Dec 8, 2015 at 21:15

8 votes

Accepted

When do I need a protective earth?

answered Oct 18, 2021 at 9:52

7 votes

What is the purpose of the brown pads on this PCB?

answered Sep 6, 2015 at 14:53

6 votes

Are there dangers to humans from PCB/Circuit Corrosion?

answered Jan 17, 2017 at 12:01

5 votes

Why is a caseless PC not an EMI problem?

answered Jan 28, 2018 at 1:41

5 votes

Hole partially through PCB

answered Sep 19, 2019 at 11:02

5 votes

Accepted

How to build loss-free inverter?

answered Aug 29, 2019 at 8:43

4 votes

How can we test the lifespan of electrical components?

answered Mar 2, 2021 at 17:44

4 votes

Why is the load on a darlington pair put before the transistors rather than after?

answered Feb 5, 2018 at 9:37

4 votes

Measuring small movements of a needle and syringe

answered Sep 12, 2016 at 10:53

4 votes

Accepted

Lumped matter discipline?

answered Dec 1, 2015 at 22:58

4 votes

Accepted

How to wire 3 phase motor to VFD

answered Dec 20, 2015 at 7:48

3 votes

Reading dimension in datasheet

answered Dec 25, 2015 at 10:34

3 votes

LC circuit problem

answered Oct 2, 2015 at 13:08

3 votes

Accepted

Output of Compact Fluorescent light (CFB)

answered Dec 26, 2014 at 21:08

3 votes

Accepted

110v 220v do it work?

answered Oct 18, 2014 at 20:41

3 votes

Accepted

Electric shock with isolated material in the circuit

answered Oct 11, 2014 at 12:10

3 votes

Accepted

How to measure DC Operating Point of a simple transistor circuit

answered Oct 19, 2014 at 18:37

3 votes

Why UPS are not DC output?

answered Nov 22, 2016 at 16:16

3 votes

Accepted

Is high temperatures breaking the circuit?

answered Sep 9, 2016 at 7:58

3 votes

Accepted

Is the connector marked CR4s detachable or soldered?

answered Feb 9, 2020 at 19:38

3 votes

Why does a capacitor charge and discharge?

answered Aug 4, 2019 at 14:38

3 votes

LTSpice Simulation - How to design a non ideal voltage source and limit its current?

answered Oct 14, 2019 at 13:35

Stack Exchange Network

118 Answers

Why are there only RGB and RGBW-LEDs, but none with more chips inside one housing?

Why are the three component LEDs in an RGB LED so unbalanced?

Why is kerosene stopping my red LEDs from illuminating?

Importance of electrolytic capacitor size

Add ground earth to a Chinese music player

Connector Problem. How to conveniently connect with cell-phone LiPo batteries

Flash a light in a specific pattern

Real device with derivative transfer function

When do I need a protective earth?

What is the purpose of the brown pads on this PCB?

Are there dangers to humans from PCB/Circuit Corrosion?

Why is a caseless PC not an EMI problem?

Hole partially through PCB

How to build loss-free inverter?

How can we test the lifespan of electrical components?

Why is the load on a darlington pair put before the transistors rather than after?

Measuring small movements of a needle and syringe

Lumped matter discipline?

How to wire 3 phase motor to VFD

Reading dimension in datasheet

LC circuit problem

Output of Compact Fluorescent light (CFB)

110v 220v do it work?

Electric shock with isolated material in the circuit

How to measure DC Operating Point of a simple transistor circuit

Why UPS are not DC output?

Is high temperatures breaking the circuit?

Is the connector marked CR4s detachable or soldered?

Why does a capacitor charge and discharge?

LTSpice Simulation - How to design a non ideal voltage source and limit its current?