Found in a Popular Electronics from the 90s, this circuit generates signals from 2 Hz to 30 kHz in different bands. The circuit can be powered by voltages from 5 to 12 V, depending on the application.
This amplifier, from an Argentine publication from the 1970s, uses germanium transistors with...
This circuit can reduce the voltage of a source by providing regulated adjustable output. The...
This is the circuit of a commercial flash from the 60’s. The circuit was published by the march...