User Al Kepp - Electrical Engineering Stack Exchange

65 votes

8 answers

21k views

Why are there so many relays used in a car, instead of transistors?

asked May 3, 2016 at 13:02

52 votes

4 answers

82k views

How to make traces on an universal PCB?

asked Jan 16, 2013 at 16:52

18 votes

5 answers

34k views

Is full wave rectifier better than half wave one?

asked Jan 17, 2012 at 12:55

13 votes

2 answers

12k views

Serial capacitors in electronic ballast of a fluorescent lamp

asked Jan 26, 2012 at 16:25

12 votes

3 answers

19k views

Should I use slow fuse or fast fuse?

asked Jan 18, 2012 at 16:30

9 votes

5 answers

21k views

Why does a multimeter show VAC on VDC power supply output?

asked Dec 28, 2012 at 19:53

8 votes

2 answers

6k views

Which type of 100nF capacitor is best for 78xx regulator output?

asked Jan 20, 2012 at 12:26

6 votes

1 answer

428 views

How to protect an electronic construction kit (a toy) from damages?

asked Dec 12, 2012 at 20:19

6 votes

1 answer

2k views

What is the capacity of capacitors in this power supply circuit?

asked Jan 8, 2013 at 5:55

5 votes

2 answers

806 views

BCR402R - what is the purpose of Rext in this LED driver?

asked Jan 16, 2013 at 16:34

4 votes

2 answers

11k views

Is this 7805-based design correct?

asked Jan 21, 2012 at 16:33

3 votes

1 answer

4k views

How can I determine the maximum possible current in a transformer?

asked Jan 25, 2012 at 14:13

3 votes

3 answers

337 views

Is telephone and LAN wiring symmetrical?

asked Jan 11, 2013 at 6:50

2 votes

2 answers

4k views

What is the purpose of a Zener diode added to the output of a SMPS?

asked Nov 5, 2014 at 0:52

2 votes

2 answers

7k views

A christmas light bulb question

asked Dec 7, 2012 at 22:06

2 votes

2 answers

250 views

Device is reset when switching power sources

asked Feb 7, 2012 at 23:22

1 vote

1 answer

4k views

Why a lower voltage is better for modern fast CPU and other similar chips?

asked May 7, 2014 at 18:24

0 votes

3 answers

306 views

Can I half the current rating when moving from 100-240V to just 230V?

asked Nov 22, 2012 at 23:00

Stack Exchange Network

18 Questions

Why are there so many relays used in a car, instead of transistors?

How to make traces on an universal PCB?

Is full wave rectifier better than half wave one?

Serial capacitors in electronic ballast of a fluorescent lamp

Should I use slow fuse or fast fuse?

Why does a multimeter show VAC on VDC power supply output?

Which type of 100nF capacitor is best for 78xx regulator output?

How to protect an electronic construction kit (a toy) from damages?

What is the capacity of capacitors in this power supply circuit?

BCR402R - what is the purpose of Rext in this LED driver?

Is this 7805-based design correct?

How can I determine the maximum possible current in a transformer?

Is telephone and LAN wiring symmetrical?

What is the purpose of a Zener diode added to the output of a SMPS?

A christmas light bulb question

Device is reset when switching power sources

Why a lower voltage is better for modern fast CPU and other similar chips?

Can I half the current rating when moving from 100-240V to just 230V?