user avatar
user avatar
user avatar
Ian Bland
  • Member for 6 years, 2 months
  • Last seen this week
33 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?

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?

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?

4 votes
Accepted

On mains AC, why is neutral different from live?

3 votes
Accepted

Impact of underpowered speakers

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)

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?

2 votes

Protect baby from mains

2 votes

Using gnd pin as a -vcc pin in LM358

2 votes

Writing DSP algorithms directly in C or assembly?

2 votes

Why don't we use low voltage Power Sources for high wattage applications?

2 votes

How can I calculate how much my desktop PC costs to run for an hour?

2 votes

Inexpensive ways to drive 30 LED diodes, 15mA each, preferably with less than 30 pins

2 votes

Simulating 0.5V button push with Arduino 5V output