RF Monitor (CB21686E)

This RF monitor or field strength meter can use instruments from 100 uA to 1 mA full scale. The diode is germanium type.

Voltage Indicator (CB18187E)
This circuit for the 1.5 to 15 V scaled ranges was found in a 1982 documentation, but uses current...
Light Relay (CB473)
In this circuit the relay triggers on when light falls onto the sensor, a common LDR. Power supply...
3 to10 MHz Oscillator (CB13020E)
The modified Hartley oscillator seen in the figure can generate signals ranging from 3 MHz to 10...