28V x 500 mA Shunt regulator (CB8818E)

Found in a 1960s RCA manual, this circuit uses components from the era. For the indicated circuit R1 is 28ohm and R2 is 1 k.

| Clique na imagem para ampliar |

Field strength meter (CB7358E)
This tuned circuit was found in a 1966 Electronic Circuit Handbook. The transistor can be any...
Signal Tracer (CB4353E)
This circuit was published in an English magazine from 1980. The magazine no longer exists, but...
High voltage source 20 kV (CB7841E)
Found in American documentation, this circuit uses an automotive ignition coil to generate 20 kV. The...