What is the amplifier controlled voltage?
In the voltage amplifier (VCA), the profit is controlled by the signal voltage level. Profit is measuring the ratio of output amplitude divided by input amplitude. This shows how much signal or sound has been reinforced. These amplifier systems can be used for music and public address (PA) or conference systems.
Sound systems are often used to mix consoles for recording and playing music. Consoles use multiple channels to control various functions of tools and voice sections. Each channel can have its own amplifier circuit controlled by voltage, allowing you to mix and faded separately. The circuit determines the volume level of the note and calms the output after the note. The main control can allow parts of music to become louder or softer without disrupting the overall mix. The circuits usually have an apome of one profit, but the profit can be changed. The profit of one means that the perimeter dampens the place of reinforcement simply. The attenuation filters the sounds and can remove undesirable noise while maintaining the required tones.
Electronic components found in these systems include operating amplifiers (OP amplifiers), effective field transistors (JFETS), and resistant voltage (VCR). Resistors controlled voltage or varistors reduce resistance with voltage increases. A very simple version of the linear voltage amplifier can be created with two JFETS and one Oprán. In this district, JFETS will act as a linear control resists.
and the amplifier controlled voltage can be classified as a two -line or four -quadrant. If in a version with two quadrants, if the control voltage falls to zero or less, there will be no output. The use of a four -quadrant amplifier, when the tunne reaches zero, the output profit increases, but this output is inverted in its stage. A amplitudes are used for modulation. Modulation of amplitude (AM) changes the power of the signal, so farThe frequency modulation (FM) changes its frequency.
amplifiers are available in a wide range of dynamic and profitable ranges. They offer great control range with low and low distortion. The voltage amplifier tends to have a longer life due to minor problems with electronic parts than other types.