Ian Bland's user avatar
Ian Bland's user avatar
Ian Bland's user avatar
Ian Bland
  • Member for 7 years, 11 months
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32 votes

How do I describe this circuit?

19 votes
Accepted

Equalizing unequal grounds with batteries

13 votes

Light bulb burns out -- why there is an arc in the switch?

8 votes

Electrical cabinet - cooling fan on top or bottom?

7 votes

Is it important to file a new soldering iron tip before tinning?

6 votes

What is exactly does it mean when someone says "memory-mapping","IO Mapping","Memory Mapped IO" & "Port Mapped IO"?

6 votes
Accepted

Level shift 0/5V to -10V/+10V

5 votes

How to reliably secure stranded wire in terminal block?

5 votes
Accepted

What wire runs between two speakers on a headphone, and how do I replace it?

4 votes
Accepted

On mains AC, why is neutral different from live?

4 votes
Accepted

Operating semiconductors outside of Voltage specifications?

4 votes
Accepted

If I have 5% 100k resistors but wanted 1% precision, can I use 4 of them in series parallel to improve on the 5% precision?

4 votes
Accepted

How low an insulation resistance is too low for a residential electrical system?

3 votes
Accepted

Where does the output current of an op amp come from?

3 votes

Making a 5v 12v and -12v PSU

3 votes

Are diodes backwards?

3 votes

Using AND gate as a comparator

3 votes

Is it safe to measure AAA battery current with a multimeter directly?

3 votes

Simple USB powered PIR sensor with LED attached to it (no arduino)

3 votes
Accepted

Impact of underpowered speakers

3 votes

Guitar amplifier emits a continuous beep, which pitch vary depending on "bass" and "gain" knobs. Finding what's wrong in the circuit

2 votes

Simulating 0.5V button push with Arduino 5V output

2 votes

How do I determine what range (not necessarily value) of resistors to use for voltage dividing

2 votes

Safe to turn off power by removing a plug fuse indefinitely?

2 votes
Accepted

\$m \times n\$ grid of resistors, power dissipated through each is \$P_{total}/ (m \times n)\$

2 votes

Amplifier humming when no source is attached

2 votes
Accepted

What size wattage resistor do I need for this project? Does resistor wattage matter in this case? (Wiring schematic picture included!)

2 votes

DIY zero-crossing circuit, how crucial are component values?

2 votes

What does "32KB (16K x 16)" mean?

2 votes

Is my simple home setup ESD protected?