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Dean
  • Member for 11 years, 8 months
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74 votes
4 answers
106k views

How is using a transformer for isolation safer than directly connecting to the power grid?

47 votes
9 answers
14k views

How were the first microprocessors programmed?

42 votes
8 answers
66k views

What is a pull up and pull down?

30 votes
2 answers
48k views

Capacitor Sizes for 7805 Regulator

25 votes
6 answers
83k views

Why is three-phase offset by 120 degrees?

24 votes
6 answers
24k views

Why are NAND Gates cheap?

17 votes
2 answers
39k views

7812 minimum input voltage?

16 votes
4 answers
77k views

Voltage input for charging NiMH Batteries

13 votes
4 answers
40k views

When to use STD_LOGIC over BIT in VHDL

12 votes
6 answers
3k views

Tips for keeping lots of cables tidy

12 votes
2 answers
12k views

Getting higher power output by using more resistors

11 votes
6 answers
22k views

Where to start when considering making a GPU?

11 votes
2 answers
24k views

Arrows on connections in schematics

11 votes
7 answers
6k views

Mains Voltage on Strip Board

10 votes
3 answers
3k views

Data retention on a microcontroller

10 votes
4 answers
832 views

What have countries gained by increasing/decreasing mains voltage by 10V?

10 votes
4 answers
42k views

What is Frequency in electronics?

10 votes
1 answer
3k views

Why do battery/power supply supply voltages drop under a load?

9 votes
5 answers
8k views

Will there be any effects on a signal in a long wire?

9 votes
4 answers
2k views

Why can't a power supply supply low current?

9 votes
1 answer
5k views

What happens to I/O pins in Low Power Mode on MSP430

8 votes
2 answers
3k views

Why are multipliers 18x18 Bit in FPGAs?

8 votes
3 answers
13k views

Water and Electronics?

8 votes
4 answers
19k views

How do constant current power supplies work?

7 votes
4 answers
1k views

Circuit Protection

7 votes
5 answers
2k views

Why the use of resistors when pulling something up or down?

7 votes
5 answers
13k views

Grounding a soldering iron

6 votes
2 answers
1k views

Is it possible to detect battery chemistry?

6 votes
3 answers
35k views

What happens to my LED when I supply too much current?

6 votes
4 answers
21k views

Building a Battery Charger with an LM317