Relay and neon driver (CB8833E)

Found in a 1960s documentation, this circuit uses a transistor to drive a relay as well as a set of neon lamps with high voltage power supply.

| Clique na imagem para ampliar |

Temperature Indicator (CB14003E)
This thermometer, which uses common diodes as sensors, was found in a 1975 magazine -...
Sinusoidal Oscillator (CB9044E)
This circuit is from American documentation from the 70s. This configuration appears in this...
6-Transistor MW Radio 6TR 186 (CB18356E)
We found this Japanese commercial radio diagram of three transistors in a documentation of the...