Battery Power Level Indicator (SKU#KA2284)

DESCRIPTION The KA2284 Voltage Level Indicator Module provides a logarithmic visual indication of a static or dynamic voltage level using LEDs. PACKAGE INCLUDES: KA2284 Voltage Level Indicator Module KEY FEATURES OF KA2284 VOLTAGE 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 12V 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 12V Module Connections There is a 4-pin header on the assembly for making connections. 1 x 4 Header VCC = Connect to 3.5 to 12V IN = Input. The voltage to be measured by the device GND = Ground. There are 2 ground pins, but only one needs to be used GND = Ground. There are 2 ground pins, but only one needs to be used OUR EVALUATION RESULTS: These modules work as advertised and can be useful for monitoring some types of voltages and are a very inexpensive way to experiment with VU meter type applications. TECHNICAL SPECIFICATIONS Maximum Ratings Vcc 3.5 – 12V IMax Maximum Current Draw Vcc < 50mA with all LEDs lit Operating Ratings IMax Max current draw on signal Input < 200uA Dimensions L x W (PCB) 28 x 21mm Datasheet KA2284

Battery Power level indicator KA2284 KA2284 battery level indicator contains five LED lights that progressively light up as the voltage increases. The AC and DC input of this module can be selected by a jumper and it can handle voltages that range from 3.5 V to 12 V. Features: Chip: KA2284 Supply voltage: 3.5V-12V The magnitude of the level can be adjusted AC and DC signals can be controlled by jumper PCB board size: 29 (mm) x21 (mm)

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