This receiver circuit was found in documentation from 1924. The circuit uses two batteries, the high voltage one being 90 V.
The output transistor used in this amplifier must have Vce of at least 200 V and Ic of 1 A and...
Found in a 1968 US documentation, this circuit shows how to use the resistance-scale multimeter to...
This filter is inserted between the interfering device and the interfering device. The coils are...