Archived, older circuits
Some are working, others are not. That's why they are here, either non-working or obsolete.
But they may still be of use either as example circuits or perhaps you can use snippets of the diagrams. Whatever.
Use at your own risk. There is NO SUPPORT for any of these circuits.
Basic IC MonoStable Multivibrator
Basic RF Oscillator #1
Birdie Doorbell Ringer - Audio transformer sometimes difficult to obtain
'Bug' Detector with Beep
Gel Cell Charger, I - No time to figure out the problems...
Micro-Spy with FETs - 70's
Micro-Spy with USW - 70's
Micro-Spy with TTL - 70's
Miniature FM Transmitter #1
Miniature FM Transmitter #2
Miniature FM Transmitter #3
Servo Tester #1 - Working. Not bad; I will revamp this one.
Servo Tester #4 - Working, but not to my satisfaction
Servo Tester #5 - Working, but not to my satisfaction
Simplest R/C Circuit
Simplest RF Transmitter
Back to Circuits Page
Copyright © 2002 - Tony van Roon. ALL RIGHTS RESERVED.
Last Updated: February 6, 2006