The figure shows how to associate flip-flops in a shift register to obtain a lower frequency sinusoidal signal. The circuit is from a Radio Electronics from November 1976.
This circuit is the factory version of the LM386 low-power amplifier. The sound quality is...
This circuit with transistors of the time was found in the magazine Radio Electroinics of June of...
This circuit charges a battery to power a flashlight at night. The circuit is from an English...