Windscreen Wiper Interval timer (CB6043E)

This circuit was found in a former Popular Electronics. The timing is set on the potentiometer and the relay is sensitive to 12 V.

10 Step Indicator (CB4888E)
This 10-step voltage indicator was obtained from a 1980s publication. The circuit is based on an...
Charge and Discharge Monitor (CB5408E)
Supplied in a 2005 Linear Technology Application Manual, this circuit monitors the charge and...
5 V to 400 V Converter (CB1478E)
This circuit converts voltages from 5 to 12 V at voltages of 100 to 400 V. The transformer has a...