Time Base (CB25100E)

This time base circuit was found in the January 1988 issue of Radio Electronics magazine. The output signals are 1 Hz and 10 Hz TTL.

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Precision Shadow Alarm 741 (CB25479E)
This circuit was found in the July 1992 Radio Electronics magazine. Sensitivity adjustment is made...
Transistorized multimeter (CB7364E)
This circuit was found in a 1967 Electronics World. We can design it with a BF245 for the FET and a...
Micro Power Schmitt Trigger (CB25139E)
Using a CA3030, this circuit was found in the May 1988 Radio Electronics magazine. The power...