Condenser Mic

Condenser Microphone

You might know that Condenser means Capacitor, the electronic component which stores electrical energy in the form of electrostatic field. As the name indicates the condenser microphone uses a capacitor to convert sound (pressure variations) to electrical signals. Hence it is also called Electrostatic Microphone. We all know that a capacitance will be created when two parallel plate conductors are separated by a distance. The created capacitance will be directly proportional to the area of the plates and inversely [...]

Ultrasonic Distance Sensor

Ultrasonic Sensors

Ultrasonic Sensors are widely used for non-contact  proximity, presence and distance measuring applications. These devices work on a similar principle of sonar or radar which evaluates the target by interpreting the echo from sound or radio waves. It emits a short high frequency sound waves and evaluates echo which is reflected back from the target. Sensors uses the time interval between sending the sound waves and receiving the echo to determine the distance of target. Most of the ultrasonic sensors are equipped with temperature compensation circuit to [...]