This balance indicator for stereo amplifiers was found in an 80's Elektor. The components used are common. Zeners are 1.8 V or close to that value.
Found in the December 1995 issue of Electronics Now, this circuit generates sinusoidal signals. The...
This circuit with transistors of the time was found in the magazine Radio Electroinics of June of...
This circuit was obtained in an old Elektor. It is a reference, since the integrated products of the...