Electronics Infoline Web

24 Line Parallel Interface for the PC

http://www.wenzel.com/pdffiles/24linesc.pdf

2400MHz Signal Source

The oscillator starts with a readily available 96MHz crystal and multiplying this by 25 goes up to 2400MHz. The use of filters takes the guesswork out of finding the correct frequencies. The output is -10dBm

http://www.qsl.net/g3pho/13cm.htm

29.85 MHZ bandpass filter schematic

http://www.wa4dsy.net/56kb/29mhzbpf.gif

29.85 MHZ notch filter schematic

http://www.wa4dsy.net/56kb/29mhzfil.gif

2W transmitter

This is claimed to give mile of range or so on normal FM band around 100 MHz

http://www.pcs-electronics.com/schematics/2wsimple.gif

3 1/2 Digit Panel Meter

http://kitsrus.com/projects/k127.pdf

3 valve radio

http://www.intio.or.jp/jf10zl/6AQ8.htm

3-terminal regulator circuits

http://margo.student.utwente.nl/el/analog/reg3p01.gif

3-way & 4-way switches

Controlling a light or lights with two or more switches

http://www.wfu.edu/~matthews/courses/p230/switches.html

3.7 GHz divider by 1000

http://www.mrs.bt.co.uk/dubus/8703-2.pdf