This circuit was used in tape recorders to clear the tape of any previous recordings for a new recording. The circuit is from a Radio Electronics dated September 1982.
This amplifier uses common transistors in a phase inverter configuration. Transistors must be...
This is the same amplifier circuit as the previous circuit adapted to operate with a single...
In fact, this 1994 circuit uses a scale of LEDs to indicate the pulse rate applied to its input....