Professional VU Meter Driver Board DB Audio Level Meter DC12V Power Amplifier Board Module Chip

Features:
An integrated circuit chip that's specially designed for audio level testing, includes the square root of a dynamic index compression circuit (e.g.: Input 1V, 1V; input 4V, 2V; input 9V, 3V).
Considering dynamism and precision, the instruction pointer oscillates moderately, avoiding the small signal pointer does not move, the large signal pointer backing of the state.
Doesn't require independent power supply, it uses original power supply leads.
As compared with TA7318P / TA7332P, the cost of transformer is reduced, and takes up less space, hence more convenient and flexible installation.
Install lowpass filter circuit to filter out high frequency interference, supply power in harsh environments(such as car audio system).
Adjustable output sensitivity, suitable for different sizes of header.
Common 12V DC power supply, easy to use in-vehicle device and PC computers.
Has a power reverse polarity protection.
Provide energized pointer protection for boot pointer base, extend header life.
Use 0.5W metal film resistors, large power margin to ensure reliable and stable work for long hours.