This wired control circuit serves both volume and balance between channels. We found it in Radio Electronics magazine from August 1968. Transistors are common general-purpose types
This circuit uses a unijunction transistor in a different configuration to generate rectangular pulses at...
We found this configuration in a 1974 technical documentation. It can test both TTL logic circuits and...
We found this circuit in an old American publication. The circuit is designed to measure the...