Remote Control Transmitter (T180E)

This old remote control valve was found in a Japanese documentation of 1962. The operating range is 27 MHz and the battery power

1 MHz Hartley Oscillator (CB844E)
The coil is formed by 70 + 5 turns of 6 to 30 AWG wire on a 1 cm to 10 cm ferrite core. The...
Car Battery Monitor (CB4542E)
This circuit was obtained from an English magazine from 1980, but as it uses components that can...
Q Multiplier (CIR916E)
Factor Q measures the selectivirty of a resonant circuit and also receivers. This circuits cen...