This General Electric circuit is from the 80's. The PUTs used in this meter are not common components today.
In the figure we have a regulator circuit for output voltages of 0.5 to 10 V with currents up to...
This circuit was suggested by Texas Instruments in a 1980s documentation. The transistor must be...
We found this circuit in a 1975 radio amateur documentation. The circuit uses TTL technology and...