User dwwilson66

93 votes

12 answers

475k views

How can I tell the size of a barrel power connector?

asked Mar 3, 2013 at 3:49

38 votes

3 answers

146k views

Help me understand the relationship between positive, negative, neutral and ground in AC and DC

asked Jan 17, 2013 at 20:42

33 votes

8 answers

28k views

What do I need to know about oscilloscope probes?

asked Jan 25, 2013 at 22:01

12 votes

5 answers

10k views

What is the simplest sound generating circuit?

asked Jul 24, 2012 at 19:34

12 votes

5 answers

42k views

How do I calculate the necessary resistance for a voltage divider?

asked Nov 2, 2012 at 14:19

10 votes

3 answers

2k views

What do I do with the extra "ground chassis" tab on a DC power jack?

asked Jan 21, 2013 at 17:52

9 votes

6 answers

51k views

How are bridge rectifiers rated?

asked Aug 8, 2012 at 11:20

8 votes

2 answers

1k views

Why are the "common" resistors and capacitors rated the way they are?

asked Aug 12, 2012 at 12:59

8 votes

5 answers

28k views

What's the difference between linear and audio tapers, and why should I care?

asked Nov 30, 2012 at 3:07

7 votes

2 answers

37k views

Selecting the right bridge rectifier

asked Nov 11, 2012 at 17:14

7 votes

4 answers

17k views

Can I safely substitute a 4.7uF cap for a 5uF cap?

asked Jan 16, 2013 at 1:08

7 votes

5 answers

21k views

Transformers vs. voltage regulators

asked Jan 26, 2014 at 16:04

7 votes

2 answers

215 views

How to reliably and safely recreate a blue smoke monster for a workshop?

asked Dec 16, 2013 at 13:28

6 votes

2 answers

62k views

How do I test a bridge rectifier?

asked Jul 27, 2012 at 13:50

6 votes

1 answer

2k views

What are suggestions for resistor and capacitor substitutions?

asked Aug 12, 2012 at 13:30

6 votes

3 answers

2k views

What are the important design considerations when laying out a PCB? [closed]

asked Dec 17, 2012 at 12:38

5 votes

1 answer

4k views

What kind of knob fits a slotted potentiometer shaft?

asked Dec 23, 2012 at 17:06

4 votes

2 answers

3k views

I need help getting my computer to talk to my Arduino Uno [closed]

asked Dec 26, 2012 at 17:52

4 votes

1 answer

1k views

How do I determine the proper FM transmitter strength?

asked Mar 16, 2013 at 14:30

3 votes

1 answer

2k views

How can I power a SCSI hard drive without a motherboard/scsi card?

asked Dec 22, 2013 at 14:40

3 votes

2 answers

586 views

What does this power designation/rating mean, and do I need to custom-build a power supply to provide it?

asked Dec 22, 2013 at 15:12

3 votes

3 answers

364 views

I need a reasonability check for the safety of a home-hacked power supply

asked Jan 20, 2014 at 21:04

3 votes

2 answers

1k views

How to mathematically determine the frequency of a tone based on components being used

asked Feb 11, 2013 at 3:47

3 votes

3 answers

634 views

What is a secondary transformer?

asked Jan 16, 2013 at 0:59

3 votes

2 answers

5k views

How do I determine if I can safely substitute potentiometers?

asked Dec 5, 2012 at 18:15

3 votes

2 answers

4k views

How can I test a hex Schmitt trigger?

asked Aug 11, 2012 at 0:19

3 votes

2 answers

1k views

Potentiometers: definitions, applications and how to choose?

asked Aug 12, 2012 at 13:07

3 votes

4 answers

7k views

How do I attach a bridge rectifier to a PCB or breadboard?

asked Apr 18, 2013 at 16:43

2 votes

2 answers

1k views

Can I make a rectifier to convert from AC to DC?

asked Jan 7, 2013 at 16:41

2 votes

3 answers

2k views

I need a basic primer on interpreting vacuum tube datasheets

asked Jan 22, 2014 at 14:23

Stack Exchange Network

36 Questions

How can I tell the size of a barrel power connector?

Help me understand the relationship between positive, negative, neutral and ground in AC and DC

What do I need to know about oscilloscope probes?

What is the simplest sound generating circuit?

How do I calculate the necessary resistance for a voltage divider?

What do I do with the extra "ground chassis" tab on a DC power jack?

How are bridge rectifiers rated?

Why are the "common" resistors and capacitors rated the way they are?

What's the difference between linear and audio tapers, and why should I care?

Selecting the right bridge rectifier

Can I safely substitute a 4.7uF cap for a 5uF cap?

Transformers vs. voltage regulators

How to reliably and safely recreate a blue smoke monster for a workshop?

How do I test a bridge rectifier?

What are suggestions for resistor and capacitor substitutions?

What are the important design considerations when laying out a PCB? [closed]

What kind of knob fits a slotted potentiometer shaft?

I need help getting my computer to talk to my Arduino Uno [closed]

How do I determine the proper FM transmitter strength?

How can I power a SCSI hard drive without a motherboard/scsi card?

What does this power designation/rating mean, and do I need to custom-build a power supply to provide it?

I need a reasonability check for the safety of a home-hacked power supply

How to mathematically determine the frequency of a tone based on components being used

What is a secondary transformer?

How do I determine if I can safely substitute potentiometers?

How can I test a hex Schmitt trigger?

Potentiometers: definitions, applications and how to choose?

How do I attach a bridge rectifier to a PCB or breadboard?

Can I make a rectifier to convert from AC to DC?

I need a basic primer on interpreting vacuum tube datasheets