Solar Voltage Doubler (CB20482E)

This circuit is intended for carrying out experiments with solar cells. The circuit is from a 1991 documentation.

Active Switch (CB19851E)
This is a two-input audio switching circuit. The operational can be of any type and more entries can...
12 W Stereo Amplifier TDA1010 (CB14721E)
We found this amplifier for automotive use in the Philips integrated circuit manual from 1990. The...
FM Booster (CB22014E)
Found in old English documentation this circuit can be made with a BF245 or equivalent. Coils are...