Transistor gain meter (CB20522E)

This circuit was found in a publication in the 1950s, mainly applying to germanium transistors of the time.

Mini no breake (CB22151E)
This circuit was found in old English documentation. When the main power is interrupted, the...
300 to 3,000 Hz Speech Filter (CB6543E)
Found on an 80's Radio Electronics, this two-section circuit is designed to pass the frequency...
13 V x 2 A power supply (CB15673E)
This unit is ideal for powering car radios, tape players or car CD and DVD players from the power...