This is a demo of the electromagnetic field sensor using three transistors. The base of the second and third transistor are directly coupled to the emitter of the previous transistor. The EM field is detected by the indication of the LED connected to the third transistor. The base of the first transistor is connected to a sensing tip made of a metal strip or enameled wire. When the sensing tip is brought near an electromagnetic field, near electric cables or lines, (never touch it) the LED indicates showing the field.
Негізгі бет Ғылым және технология Electromagnetic Field (EMF) Sensor Using Three Transistors Demonstration
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