Electronics Infoline Web

3.8 GHz divider by 4

http://www.mrs.bt.co.uk/dubus/8603-3.pdf

30-Meter QRP Transmitter for Morse Code

http://www.uoguelph.ca/~antoon/circ/30m.htm

converts a square wave signal to a +-150 volt output signal with fast 100nS rise and fall times

http://www.imagineeringezine.com/PDF-FILES/300vpp.pdf

http://ourworld.compuserve.com/homepages/Bill_Bowden/page3.htm#32bit_receiver

http://ourworld.compuserve.com/homepages/Bill_Bowden/page3.htm

measure power factor to 0.1% resolution and operate from single 9Vdc

http://www.edn.com/archives/1994/042894/09di3.htm

uses a switched capacitor filter IC from National Semiconductor to filter signals with frequencies higher than the 3KHz needed for voice audio.

http://www.imagineeringezine.com/PDF-FILES/3kscfamp.pdf

http://www.uoguelph.ca/~antoon/circ/3brake.htm

http://www.uoguelph.ca/~antoon/circ/txtrack.htm

Standard 4 digit LCD. Low power (approx. 17?A, 3 to 6V) Multiplexed ?P (digit select) and BCD (data) inputs.

http://www.techdesign.be/projects/003/003.htm