Electrical Engineering
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Leon Heller

I am semi-retired, with a degree in experimental psychology. In my working career, I divided my time between engineering psychology and embedded systems design.

I am a licensed radio amateur (G1HSM).

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70 Relay vs. Transistor? Feb 13 '11
67 Are solder fumes bad for me? Mar 15 '10
66 What kind of components are black blobs on a PCB? Jan 17 '11
42 Why are there 3 pins on some batteries? Mar 7 '12
35 What are good microcontrollers available today? Dec 22 '09
34 What measures should I take to protect the USB ports of my PC during development of a USB device? Dec 22 '13
29 What is this squiggly trace for? Aug 26 '10
24 What's the difference between a potentiometer and a rheostat? Mar 4 '11
20 How do you attack a new board? May 2 '11
20 What happens when an embedded program finishes? Apr 27 '12
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