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.
circuit is used to increase the sensivity of a relay. A 50 to 100 mA relay can be triggered with...
This symmetric 30 mA x 15 V power supply was found in the Ferranti transistor manual from 1974....
This circuit causes the powered lamp to fluctuate in brightness by 20% intensity. It can be used...