User leftaroundabout

36 votes

Why can't I light a LED with a 1.5 V battery?

answered Nov 19, 2017 at 10:58

19 votes

Accepted

What do you call it when you add energy to an inductor?

answered May 19, 2011 at 21:23

13 votes

What happens if an LED is connected to a supply voltage greater than its voltage drop?

answered Feb 16, 2017 at 19:38

11 votes

How does a guitar body affect electromagnetic pickups?

answered May 20, 2011 at 20:03

10 votes

Accepted

What to plug in first to usb charger when charging: wall outlet or cell phone and why?

answered Mar 3, 2014 at 16:03

7 votes

DIY guitar effect - delay

answered Dec 3, 2018 at 21:18

5 votes

Choose the better values (in terms of range) for resistors in this non-inverting op-amp circuit

answered Jun 3, 2015 at 22:16

4 votes

Accepted

DC Motor very high acceleration

answered Sep 9, 2011 at 11:50

4 votes

Infinite thermal current noise in a wire?

answered Aug 7, 2017 at 10:44

3 votes

Inductive reactance: frequency vs current. Why current goes to zero as frequency increases?

answered Dec 21, 2015 at 20:52

2 votes

Why are switchers more efficient than linear regulators?

answered Apr 8, 2014 at 13:28

2 votes

Why is the linearity of a sensor a desirable feature?

answered Sep 12, 2014 at 15:49

1 vote

DSP - Voice Activity Detection: what are my options?

answered Aug 7, 2011 at 16:42

1 vote

Why does Ohm's law not work for vacuum cleaners?

answered Mar 25, 2017 at 20:12

1 vote

Ohm's law doesn't seem to be working for this electric motor

answered Mar 24, 2018 at 11:14

1 vote

Equivalent circuit of a non-ideal resistor

answered Dec 18, 2019 at 10:41

0 votes

Accepted

Circuit to control a magnetic field, using a laminated core

answered Aug 7, 2018 at 12:14

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17 Answers

Why can't I light a LED with a 1.5 V battery?

What do you call it when you add energy to an inductor?

What happens if an LED is connected to a supply voltage greater than its voltage drop?

How does a guitar body affect electromagnetic pickups?

What to plug in first to usb charger when charging: wall outlet or cell phone and why?

DIY guitar effect - delay

Choose the better values (in terms of range) for resistors in this non-inverting op-amp circuit

DC Motor very high acceleration

Infinite thermal current noise in a wire?

Inductive reactance: frequency vs current. Why current goes to zero as frequency increases?

Why are switchers more efficient than linear regulators?

Why is the linearity of a sensor a desirable feature?

DSP - Voice Activity Detection: what are my options?

Why does Ohm's law not work for vacuum cleaners?

Ohm's law doesn't seem to be working for this electric motor

Equivalent circuit of a non-ideal resistor

Circuit to control a magnetic field, using a laminated core