Electronics Infoline Web

Build an (el cheapo) lightning effect

build a simple floodlight usign an office rubbish bin made of metal and a photoflood bulb

http://www.dmx512.com/web/light/diy/lflood/lflood.htm

Build An Adjustable High Frequency Notch Filter

EDN-Design Ideas

http://www.edn.com/contents/images/20603di.pdf

Build An Ion Detector

http://www.corp.direct.ca/trinity/iondetector.html

Build and test an autonomous mini-sumo robot

http://www.engr.sjsu.edu/rkwok/projects/SUMO.pdf

Build These Noise-Canceling Headphones

Theory behind this project is that by picking up ambient sound with a microphone and reproducing it out of phase, we can actively cancel or "null" out background noise.

http://headwize.com/projects/noise_prj.htm

Build your own 9:1 balun

A short explanation on how to make your own 9:1 balun for beverage antennas.

http://www.hard-core-dx.com/nordicdx/antenna/feed/9_1balun.html

Build your own antenna isolation transformer

Isolation between antenna network and TV/radio equipment

http://www.epanorama.net/circuits/antenna_isolator.html

Build your own bypass-capacitor tester

It charges the capacitor under test through 100 kohm for approximately 1 ms and then discharges it through 10 ohm for approximately 40 ns

http://www.edn.com/article/CA183946.html

Build your own DF unit

Building your doppler, pictures and instructions.

http://members.tripod.com/~clearRX/

Build your own K9AY

The performance of the K9AY is miraculous. details on how to construct one yourself.

http://www.hard-core-dx.com/nordicdx/antenna/loop/k9ay/k9ay12.html