Voltage Controlled Amplifier Circuit

A voltage controlled amplifier can be realised by first creating a voltage controlled resistor vcr which is used to set the amplifier gain.

Voltage controlled amplifier circuit.

A current ilsc is inserted into this input which controls the gain of the device linerly. How to build a voltage controlled oscillator circuit with a 4046 chip. A variable gain or voltage controlled amplifier is an electronic amplifier that varies its gain depending on a control voltage. A simple linear voltage controlled amplifier can be constructed with one op amp and two jfets see the figure.

A voltage amplifier circuit is a circuit that amplifies the input voltage to a higher voltage. This type of circuit has many applications including audio level compression synthesizers and amplitude modulation. So for example if we input 1v into the circuit we can get 10v as output if we set the circuit for a gain of 10. The amplifier can achieve an 80 db dynamic control range with less than 0 2.

An amplifier electronic amplifier or informally amp is an electronic device that can increase the power of a signal a time varying voltage or current it is a two port electronic circuit that uses electric power from a power supply to increase the amplitude of a signal applied to its input terminals producing a proportionally greater amplitude signal at its output. It can be realized by first creating a voltage controlled resistor which is used to set the. The vcr is one of the numerous interesting circuit elements that can be produced by using a jfet junction field effect transistor with simple biasing.