This PLL with operational amplifiers was found in 1969 documentation. The configuration can be adapted to use modern components. The circuit has a gain of 15 V / V and can operate with 10 kHz signals.
Found ina 1970 American documentation this fast-reading circuit uses a photodiode. Transistors...
This circuit was found in an Electronics World of 1968. The transistor can be any general purpose and...
This power source was found in a 1968 Electronics World. The transistors are from that time. The...