This General Electric circuit is from the 80's. The PUTs used in this meter are not common components today.
This circuit is nothing more than a voltage quadruplicator that can generate close to 1 000 V from the...
Found in 1969 RCA documentation, this dimmer uses a dual time constant setting to achieve better...
This is an amplifier stage with a typical germanium transistor from the 60's to the 70's. The...