Infrared LEDs are just like ordinary LEDs but the light output cannot be seen. To view an infrared LEDs, turn it on with the appropriate ba...

Figure below shows what is often referred to as an integrated circuit (IC). The circuit is actually etched onto a tiny wafer or “chip” of ...

Time to establish a clear idea of how sound is transformed into electricity and back into sound again. Suppose someone bangs a gong with ...

Loudspeakers utilize the fact that if you run a varying electrical current through a coil situated in a magnetic field, the coil will move ...

1.Electrodroid ElectroDroid is a simple and powerful collection of electronics tools and references.                             Down...

A Relay is an electromagnetic device which is used to isolate two circuits electrically and connects them magnetically. It is basically us...

Carefully note the position of a component on your bread- board, and then move it to the same relative position on the perfboard, poking it...

A diode is a very early type of semiconductor. It allows electricity to flow in one direction, but blocks it in the opposite direction. (A ...

DC current does not flow through a capacitor, but voltage can accumulate very quickly inside it, and remains after the power supply is disc...

When you flip a toggle switch  it connects the center terminal with one of the outer terminals. Flip the switch back, and it connects the c...

Potentiometers come in various shapes and sizes, but they all do the same thing: they allow you to vary voltage and current by varying resi...

 Normally, we can ignore the resistance in electric wires, such as the little leads of wire that stick out of resistors, because it’s trivi...

An LDR is a component that has a resistance that changes with the light intensity that falls upon it. They have a resistance that falls wi...

RESISTOR COLOR CODE Some resistors have their value clearly stated on them in microscopic print that you can read with a magnifying g...