KA2284 Power level indicator Battery
Features of KA2284 Power Level Indicator Module:
- Uses KA2284 5-Dot LED Level Meter Driver w/ built-in rectifying amplifier
- Adjustable voltage range with LED display
- Use with AC or DC voltages
- 3.5 to 16V operation
The module can be used to indicate a voltage level such as for monitoring a DC battery level or for use with AC signals to implement a VU meter for audio strength or similar applications.
The module uses the KA2284 LED Dot Level Meter Driver IC to implement a logarithmic LED dot indicator display. The display consists of 5 LEDs – 3 green, 1 yellow and 1 red which are lit in sequence as the input voltage increases.
A single-turn potentiometer is used to set the range for the display.
The input for the voltage measurement includes a series capacitor for use with AC waveforms. There is a small jumper on the board which shorts this capacitor so that the module can be used with a DC signal such as when monitoring battery.
- Jumper OFF = Monitor AC voltage
- Jumper ON = Monitor DC voltage
The module can be powered off a wide voltage range of 3.5 to 16V