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Tags: Charge level display module, battery charge percentage display, KA2284 indicator
Description:The KA2284 is a monolithic integrated circuit designed for 5-dot LED level meter drivers with a built-in rectifying amplifier. It is suitable for AC/DC level meters such as VU meters or signal meters.
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 voltageJumper ON = Monitor DC voltageThe module can be powered off a wide voltage range of 3.5 to 16V
Application:Voltage level meterAudio level indicatorCharge control
Specifications:Chip: KA2284Power supply voltage: 3.5V-12VThe level amplitude is adjustableAC and DC signals can be controlled through jumpersPCB board size: 29(mm)x21(mm)
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