Triangular generator (CB21445E)

Found in old documentation about neon lamps, this circuit produces very low frequency signals that depend on the selected capacitor.

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10 kHz low pass filter (CB7578E)
Found in an American publication, this circuit applies to almost any operational amplifier. The power...
20 V AC x 50 W inverter (CB7120E)
Found in a 1968 Motorola documentation, this circuit operates at 1 kHz and can deliver 20 V from...
Body Heat Sensor (CB20975E)
This circuit detects the body's heat emissions and can trigger a load, for example, a solenoid or an...