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A Voltage Controlled Amplifier or VCA is a device whose gain is set by the voltage level of a control signal.

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Q: How does a voltage controlled amplifier work?
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Related questions

Were do you buy a voltage amplifier?

In audio look at an amplifier. It will be always a voltage amplifier.


How does power amplifier differ from a conventional voltage amplifier?

A voltage amplifier does not have to supply significant current bur a power amplifier does.


The voltage gain of an inverting operational amplifier with negative feedback is controlled by the ratio of?

The series input resistor and the feedback resistor.


What are the application of voltage shunt amplifier?

Applications of Voltage shunt feedback amplifier?


What is voltage shunt amplifier?

In Voltage Shunt Amplifier, the Output voltage is supplied in parallel with the Input voltage through the feedback network.


What are the applications of jfet?

• High Input Impedance Amplifier. • Low-Noise Amplifier. • Differential Amplifier. • Constant Current Source. • Analog Switch or Gate. • Voltage Controlled Resistor. • JFET as a Switch • JFET as a Chopper • JFET as a Current source • JFET as a Amplifier • JFET as a Buffer


May power amplifier a voltage amplifier?

A power amplifier may also boost voltage; in audio equipment, power amplifiers often have a dial on the front that is used to control the input voltage gain. A simple power amplifier is composed of a single transistor; this type of configuration cannot provide voltage amplification as well. A voltage amplifier stage is needed. So the above example of an audio power amplifier is actually a voltage amplifier stage, followed by one or more power amplifier stages.


Is transistor a current amplifier or voltage amplifier?

depends on the circuit it is used in:CE/CS is inverting voltage amplifierCC/CD is noninverting current amplifierCB/CG is noninverting voltage amplifier


Main use of a Common base transistor amplifier is?

as voltage amplifiercurrent followeri am yoges


What is chopper amplifier?

In a chopper type amplifier the dc i/p voltage is converted into an ac voltage, amplified by an ac amplifier and then converted back into a dc voltage proportional to the original i/p signal


What is voltage gain?

Voltage gain is the ratio of the output voltage of an amplifier to its input voltage.


How does the inverting amplifier differs from voltage follower circuit?

altough voltage follower circuit provides output voltage which is in phase to input voltage as in noninverting amplifier but in unamplified form.