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Graham's user avatar
Graham's user avatar
Graham's user avatar
Graham
  • Member for 9 years, 1 month
  • Last seen this week
40 votes

Why did my LED resistor burn while lighting four LEDs in series?

33 votes

Is it ok to place 220V AC traces on my Arduino PCB?

31 votes
Accepted

Why do some PCB designers put pull-up resistors on pins where there is already an internal pull-up?

31 votes

Relays vs. thyristors: What is best for swiching 230 V lights on and off rapidly (~ 5 Hz)?

24 votes

Via in PCB - Why not go for a solid copper filled via than a plated via?

23 votes

Can a high voltage line kill a person without touching it?

20 votes

Why not make one big CPU core?

15 votes

What kind of components in a computer power supply can explode loudly?

15 votes

Is there a reason why we don’t supply power to a 2.5 mm or 3.5 mm jack?

13 votes
Accepted

Why don't we use the 7805 for car phone chargers?

13 votes
Accepted

Is there any downside to using a larger than needed smoothing capacitor?

13 votes

How do electricians know where the line is down?

12 votes

Cable standard for data and power

9 votes

Due to overcurrent, shouldn't I be extremely cautious when setting an I/O pin as Output?

8 votes

High pitch audio frequency measuring

8 votes

How do I prove to my physics teacher that adding a battery in parallel doesn't double the current?

8 votes

Compress .hex file for micro-controller

8 votes

Managing high power battery pack voltages

7 votes

RGB spectrum of an RGB LED

7 votes

How do processors control their clock speed?

7 votes

Opinions on what I've come up with for a 12 V-to-5 V automotive circuit?

7 votes

What is the lowest voltage that a microcontroller can successfully read on the analog pin?

7 votes

Side effects of using large resistances

7 votes

Why is every address in a micro-controller only 8 bits in size?

7 votes

Will multiple chips outputing onto a bus for a few nanoseconds cause damage?

6 votes

Extremely low frequency filters

6 votes

Can I put vias on routing I2C lines traces on FR4 PCB?

6 votes

Why aren't starter circuits protected?

5 votes

Under what circumstances would [email protected] be lethal?

5 votes

What do HDLs compile/synthesize to?