This General Electric circuit is from the 80's. The PUTs used in this meter are not common components today.
In this circuit of a 1970s publication, data from the coil to oscillate at the desired frequency...
The capacitor used in this circuit can have values between 5 and 30 uF. The circuit is of old...
This amplifier allows you to recover recorded tapes from a tape player that has the mechanism in...