User Leon Heller - Electrical Engineering Stack Exchange

Leon Heller

Member for 13 years, 6 months
Last seen more than a month ago

webspace.webring.com/people/…
St. Leonards-on-Sea, United Kingdom

882 Answers

Score Activity Newest

78 votes

Relay vs. Transistor?

answered Feb 13, 2011 at 12:48

77 votes

Accepted

What kind of components are black blobs on a PCB?

answered Jan 17, 2011 at 16:22

74 votes

Accepted

Are solder fumes bad for me?

answered Mar 15, 2010 at 23:31

49 votes

Why are there 3 pins on some batteries?

answered Mar 7, 2012 at 15:26

35 votes

What are good microcontrollers available today?

answered Dec 22, 2009 at 1:22

34 votes

What measures should I take to protect the USB ports of my PC during development of a USB device?

answered Dec 22, 2013 at 18:19

30 votes

Accepted

What is this squiggly trace for?

answered Aug 26, 2010 at 20:38

24 votes

Accepted

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

answered Mar 4, 2011 at 19:26

23 votes

Accepted

How to carry high current on PCB

answered Sep 1, 2011 at 11:17

20 votes

Accepted

Why does LTSpice say that my "Matrix is singular" for this ideal-transformer circuit?

answered Oct 12, 2011 at 14:05

20 votes

What happens when an embedded program finishes?

answered Apr 27, 2012 at 18:22

20 votes

How do you attack a new board?

answered May 2, 2011 at 22:56

19 votes

Accepted

What is the XMOS series?

answered Dec 17, 2010 at 7:00

18 votes

Audio AC coupling capacitors

answered Nov 19, 2010 at 14:57

18 votes

What are the freeware SPICE simulators available?

answered Dec 22, 2009 at 0:41

18 votes

Accepted

How to design the capacitors used with Crystal Oscillators?

answered May 21, 2011 at 10:38

18 votes

How do BJT transistors work in a saturated state?

answered Apr 3, 2011 at 14:32

17 votes

Best PIC programmer?

answered Dec 20, 2009 at 17:51

17 votes

Accepted

Safety of making PCBs

answered Jul 15, 2010 at 13:10

17 votes

Best One-Off DIY PCB Creation Technique

answered Nov 20, 2010 at 10:23

17 votes

Accepted

Connect 230V AC 50Hz to oscilloscope

answered Jan 3, 2011 at 12:22

16 votes

Why is there such a strong preference for 45 degree angles in PCB routing?

answered Dec 16, 2010 at 0:08

16 votes

Accepted

What causes turning ON a single output pin on Microchip PIC16F690 to spontaneously turn OFF another pin on the same port?

answered Dec 9, 2010 at 20:17

16 votes

Accepted

Using oblong / rounded surface mounted pads for chip resistors, capacitors and inductors

answered Nov 20, 2010 at 13:08

16 votes

Accepted

Is it safe to drive a MOSFET from an output pin of a microcontroller?

answered Apr 14, 2011 at 20:44

16 votes

Accepted

what size of copper wire can act as a 150A fuse?

answered Mar 29, 2011 at 18:42

16 votes

High-voltage capacitor in a low-voltage system

answered Apr 15, 2011 at 8:23

16 votes

Accepted

Blind/buried vs. through hole vias?

answered Jan 21, 2012 at 16:27

15 votes

Accepted

If a PIC MCU provides multiple Vdd/Vss should you provide power to them all?

answered Nov 23, 2011 at 13:24

15 votes

Why are there teardrops on PCB pads?

answered Apr 18, 2011 at 16:05

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