User AndrejaKo

196 votes

Accepted

Why exactly can't a single resistor be used for many parallel LEDs?

answered Nov 15, 2011 at 22:04

99 votes

Accepted

How to choose value of resistor in voltage divider?

answered Mar 29, 2012 at 5:19

36 votes

How does the GPS scale and deal with potentially millions of requests per second and respond in real time?

answered Feb 10, 2012 at 1:27

36 votes

Accepted

What do I need to know about oscilloscope probes?

answered Jan 25, 2013 at 22:47

34 votes

When is it required or permitted to sample below Nyquist rate

answered Jan 15, 2017 at 13:36

28 votes

Resistance Vs Impedance?

answered Nov 4, 2011 at 7:00

27 votes

Accepted

Why do you need 2 resistors when hooking up a transistor as a switch

answered Dec 3, 2011 at 20:02

25 votes

Slow Blow vs Fast Acting Fuse

answered Jan 14, 2012 at 5:27

24 votes

Why are relatively simpler devices such as microcontrollers so much slower than CPUs?

answered Apr 11, 2016 at 18:28

22 votes

Help with oscilloscope

answered Nov 27, 2012 at 9:41

22 votes

Accepted

Which end of a barrel connector is positive?

answered Apr 29, 2015 at 14:41

21 votes

Why is the + sign commonly used as logic OR operator?

answered Sep 29, 2014 at 19:19

21 votes

What exactly is a current source?

answered Mar 22, 2012 at 17:48

20 votes

Accepted

Basic questions about transistor amplification

answered Jan 5, 2012 at 12:37

18 votes

Accepted

Why exactly 470 or 1k Ω? (to prevent damage of output pin)

answered Apr 24, 2013 at 22:10

17 votes

What does the power rating of 10W mean?

answered Apr 19, 2019 at 13:36

15 votes

Accepted

Time taken to charge the capacitor

answered Nov 20, 2011 at 12:44

15 votes

What does it mean when there is a voltage difference between ground and neutral?

answered Jul 22, 2012 at 7:44

14 votes

What are some smallest, cheapest microcontrollers with USB built in?

answered Dec 2, 2012 at 9:00

13 votes

First checks after oscilloscope unboxing

answered Mar 30, 2015 at 11:08

12 votes

Why do oscilloscopes have such high sampling rates when the bandwidth is low?

answered Sep 22, 2020 at 12:06

11 votes

Accepted

Measure power supply ripple with Rigol DS1052E

answered Jul 6, 2012 at 12:07

11 votes

How can CPUs be stable when they have so many transistors?

answered May 26, 2011 at 7:52

10 votes

Accepted

Have I understood what Arduino is correctly?

answered Nov 18, 2011 at 11:10

10 votes

Accepted

How can I use an ATX power supply for my own experiments?

answered Dec 8, 2010 at 23:53

10 votes

Accepted

Unbalanced three phase system - Neutral fails/opens/disconnects - consequence?

answered Jul 16, 2012 at 10:47

10 votes

Buzzer on a computer mainboard

answered Jul 22, 2012 at 20:25

10 votes

Accepted

How to connect this to a breadboard?

answered Jun 12, 2012 at 1:14

10 votes

Accepted

LED Voltage Drop in Series

answered Apr 18, 2012 at 21:54

10 votes

Legality of Reverse Engineering

answered Apr 27, 2012 at 5:57

Stack Exchange Network

249 Answers

Why exactly can't a single resistor be used for many parallel LEDs?

How to choose value of resistor in voltage divider?

How does the GPS scale and deal with potentially millions of requests per second and respond in real time?

What do I need to know about oscilloscope probes?

When is it required or permitted to sample below Nyquist rate

Resistance Vs Impedance?

Why do you need 2 resistors when hooking up a transistor as a switch

Slow Blow vs Fast Acting Fuse

Why are relatively simpler devices such as microcontrollers so much slower than CPUs?

Help with oscilloscope

Which end of a barrel connector is positive?

Why is the + sign commonly used as logic OR operator?

What exactly is a current source?

Basic questions about transistor amplification

Why exactly 470 or 1k Ω? (to prevent damage of output pin)

What does the power rating of 10W mean?

Time taken to charge the capacitor

What does it mean when there is a voltage difference between ground and neutral?

What are some smallest, cheapest microcontrollers with USB built in?

First checks after oscilloscope unboxing

Why do oscilloscopes have such high sampling rates when the bandwidth is low?

Measure power supply ripple with Rigol DS1052E

How can CPUs be stable when they have so many transistors?

Have I understood what Arduino is correctly?

How can I use an ATX power supply for my own experiments?

Unbalanced three phase system - Neutral fails/opens/disconnects - consequence?

Buzzer on a computer mainboard

How to connect this to a breadboard?

LED Voltage Drop in Series

Legality of Reverse Engineering