Voltage reference (CB8466E)

Found in a 90s General Electric documentation, this circuit has a drain current of just 1.5 uA. The load current is 200 uA.

nic Switch - Vox (CB10585E)
So This circuit was published in a 1982 English magazine, but can be easily assembled using BC548 for...
AM PLL tuner (CB20236E)
With this circuit it is possible to tune an AM signal using a 5k potentiometer (4k7). The circuit was...
12 44 and 50 V regulated power supply (CB8680E)
This power source was found in a 1968 Electronics World. The transistors are from that time. The...