This circuit is from an article about operations in a Radio Electronics magazine from around 1968. The transistors are types of the time and the power is not the greatest.
Using a DAC038 IC this circuit is from Radio Electronics from May 1983. The circuit must be...
This circuit with traditional discrete components was found in a 1990 documentation. The circuit can...
This circuit is from an American 80's documentation. The circuit indicates when the voltage of a 9 V...