This symmetric 30 mA x 15 V power supply was found in the Ferranti transistor manual from 1974. Transistors are common types at the time.
We found this circuit in the 1974 Ferranti transistor manual. Transistors are from the time, being...
This temperature sensor circuit was found in an old American documentation. The components used...
This separator filter is from an old publication. The capacitor can have 10 to 47 uF of the...