We found this circuit with SCRs and unijunction in a Radio Electronics magazine from June 1969. The SCRs must be in accordance with the controlled incandescent lamp. The circuit is powered by DC.
This circuit uses the 7493 to divide a TTL square signal by 8. The circuit must be powered from a...
This circuit uses a feedback integrator. We found it in Ferranti's transistor manual from 1974....
Found in a Popular Electronics from the 9s, this circuit has output for RS-232 interfaces and current...