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.

RF Power Meter (CB4885E)
This RF wattmeter was found in an American 1980s documentation. The components are common and the...
CK722 push pull audio stage (CB20512E)
This circuit is from a documentation from the 50's. The transistors are made of germanium. The...
TC6321 MOSFET - N and P channel
July 2017 - The new TC6321 integrated circuit consisting of a pair of transistor MOSFET...