Battery Charge Indicator (CB26002E)

This circuit was found in the March 1997 Electronics Now magazine. It uses a common analog indicator and the transistor is a general purpose one.

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Motor Starting Circuit (CB13803E)
We found this circuit in Motorola's Circuit Applications for the Triac 1971 manual. The circuit is for ½...
Sensitive Touch Switch (CB488)
A touch in this circuit turns-on the lamp or the relay. Power supply is according the lamp or...
Zero Frequency VCO (CB24870E)
The frequency of this circuit can be varied from zero. The circuit uses the CMOS 4046 and was...