This circuit can be used as an amplifier for musical instruments or even with your cell phone. The circuit is old and was found in the 1990 edition of Radio Electronics Experimenter magazine.
A circuit for controlling the temperature of a heating element was found in a Mullard transistor manual...
This circuit was obtained from an American publication of the 80's. The integrated circuit is of the...
The 4047 is a monostable/astable CMOS multivibrator. The basic con- figuration is triggered by the...