User JYelton

20

64

votes

7

answers

219k

views

What is “forward” and “reverse” voltage when working with diodes?

led diodes

Aug 7 '17 at 3:42 richard1941 353

5

35

votes

2

answers

3k

views

Should I discard my inventory of old electrolytic capacitors?

capacitor electrolytic-capacitor

Dec 13 '17 at 21:48 Warren Young 3,487

12

33

votes

3

answers

64k

views

What's a schematic (compared to other diagrams)?

schematics wiring

Mar 10 '17 at 11:04 Princewill 1

20

31

votes

1

answer

1k

views

Darlingtons, MOSFETS, and bipolar junctions

transistors component-selection

Jun 27 '18 at 1:35 Warren Young 3,487

19

30

votes

5

answers

26k

views

What makes a pull-up/down resistor strong or weak?

resistors pulldown

Mar 14 at 10:52 Shahzaib nawaz 1

5

30

votes

5

answers

97k

views

What's the difference between a potentiometer and a rheostat?

potentiometer

Oct 13 '17 at 22:01 JYelton 16.6k

12

28

votes

2

answers

15k

views

Why route air gaps for voltage isolation on PCBs?

pcb-design

Jul 23 '13 at 21:51 Community♦ 1

4

25

votes

3

answers

16k

views

How to decide between a TVS or Zener diode for overvoltage protection?

diodes zener transient-suppression

Dec 16 '17 at 16:49 AlMoutaz Billah 21

11

25

votes

5

answers

63k

views

What pad hole (drill) size is appropriate for a given through-hole lead diameter?

pcb-design through-hole

Sep 18 '17 at 15:31 JYelton 16.6k

12

24

votes

4

answers

30k

views

Considerations in a bench/lab power supply?

power-supply equipment

Apr 8 '13 at 11:56 Community♦ 1

4

22

votes

8

answers

24k

views

Why are some AC outlets and plugs polarized?

ac safety

Jul 17 '18 at 13:03 Bojan Simonovic 1

6

21

votes

6

answers

20k

views

Benchtop power supplies: linear vs switching? [closed]

power-supply

Feb 9 '17 at 20:21 Brizee 11

4

19

votes

6

answers

68k

views

How does a fuse blow at its current rating, regardless of voltage?

fuses

Oct 22 '16 at 14:45 Dave Tweed♦ 129k

4

18

votes

5

answers

24k

views

What can reduce overshoot and ringing on a simple square wave pulse generator?

impedance-matching ringing

Jan 27 at 8:28 Brendan 11

3

17

votes

4

answers

2k

views

Is there any benefit to using a voltage booster (such as Batteriser) on “dead” batteries?

batteries voltage-regulator switching-regulator undervoltage joule-thief

Sep 25 at 4:19 Passerby 58k

4

17

votes

3

answers

46k

views

Why is mains power sometimes 110V and other times 120V?

voltage mains

Jul 13 '17 at 20:00 iris lewis 1

1

15

votes

2

answers

15k

views

Do “solid polymer” capacitors really have a longer lifespan than electrolytic?

capacitor

Sep 11 '17 at 18:34 Russell McMahon 120k

4

15

votes

2

answers

21k

views

What values of resistor and capacitor to use for AVR reset pin isolation?

avr isolation reset

Dec 16 '15 at 3:44 Community♦ 1

2

15

votes

2

answers

1k

views

Why would the VCC/GND pins of an ATtiny26 not be aligned?

avr routing pinout

Mar 22 '14 at 18:23 JYelton 16.6k

3

14

votes

1

answer

21k

views

What is the difference between “reverse stand off voltage” and “breakdown voltage” on a TVS?

diodes tvs

Jan 13 '13 at 3:42 BobT 894

2

13

votes

3

answers

13k

views

How to determine type of through-hole resistor?

resistors identification

Apr 11 '17 at 21:02 Community♦ 1

2

13

votes

3

answers

2k

views

Must IO pins each have their own pull-up/down resistor?

resistors pullup pulldown

Nov 30 '14 at 0:50 Community♦ 1

8

13

votes

4

answers

41k

views

How do I measure differential signals (like RS-485 or DMX) on an oscilloscope?

measurement oscilloscope differential

Jul 20 '13 at 14:15 Community♦ 1

3

12

votes

3

answers

7k

views

What is the importance of memory depth when selecting a digital storage oscilloscope?

oscilloscope

May 25 '17 at 4:00 Peter Mortensen 1,589

1

12

votes

2

answers

11k

views

What is the “ammo” packaging method when ordering through hole parts?

component-selection

Jun 20 '13 at 17:15 Community♦ 1

1

11

votes

3

answers

3k

views

What is oscilloscope trigger “sensitivity”?

oscilloscope trigger

Sep 29 '15 at 3:50 Gabriel Staples 354

1

10

votes

3

answers

24k

views

How can I make a plated-through hole in Eagle?

eagle through-hole

Sep 24 at 9:52 Rich 1

7

10

votes

6

answers

18k

views

How can I control many LEDs with just a few pins on my micro?

microcontroller led multiplexer

Sep 5 at 18:07 needfulthing 152

10

votes

4

answers

830

views

Why does my waveform start ahead of the trigger?

spi oscilloscope trigger

Jan 15 '16 at 11:39 Dmitry Grigoryev 19k

3

10

votes

2

answers

7k

views

What is the recommended way to protect a circuit from non-transient overvoltage?

safety circuit-protection

Jan 12 '13 at 23:40 miceuz 4,163

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79 Questions

What is “forward” and “reverse” voltage when working with diodes?

Should I discard my inventory of old electrolytic capacitors?

What's a schematic (compared to other diagrams)?

Darlingtons, MOSFETS, and bipolar junctions

What makes a pull-up/down resistor strong or weak?

What's the difference between a potentiometer and a rheostat?

Why route air gaps for voltage isolation on PCBs?

How to decide between a TVS or Zener diode for overvoltage protection?

What pad hole (drill) size is appropriate for a given through-hole lead diameter?

Considerations in a bench/lab power supply?

Why are some AC outlets and plugs polarized?

Benchtop power supplies: linear vs switching? [closed]

How does a fuse blow at its current rating, regardless of voltage?

What can reduce overshoot and ringing on a simple square wave pulse generator?

Is there any benefit to using a voltage booster (such as Batteriser) on “dead” batteries?

Why is mains power sometimes 110V and other times 120V?

Do “solid polymer” capacitors really have a longer lifespan than electrolytic?

What values of resistor and capacitor to use for AVR reset pin isolation?

Why would the VCC/GND pins of an ATtiny26 not be aligned?

What is the difference between “reverse stand off voltage” and “breakdown voltage” on a TVS?

How to determine type of through-hole resistor?

Must IO pins each have their own pull-up/down resistor?

How do I measure differential signals (like RS-485 or DMX) on an oscilloscope?

What is the importance of memory depth when selecting a digital storage oscilloscope?

What is the “ammo” packaging method when ordering through hole parts?

What is oscilloscope trigger “sensitivity”?

How can I make a plated-through hole in Eagle?

How can I control many LEDs with just a few pins on my micro?

Why does my waveform start ahead of the trigger?

What is the recommended way to protect a circuit from non-transient overvoltage?