This circuit of the 70's uses transistors of the time. The circuit can amplify signals from 10 Hz to 100 kHz and modern equivalent components can be used. The circuit is from Ferranti.
This circuit was found in the August 1992 issue of Radio Electronics magazine. The circuit can be...
This simple circuit with LDR was found in the Radio Electronics magazine of July 1992. Any...
Wien Bridge This Vienna bridge oscillator generates a sinusoidal signal whose frequency depends...