صوت سنج 5LED
IC KA2284
KA2284 Voltage Level Indicator Module
Module provides a logarithmic visual indication of a static or dynamic voltage level using LEDs.
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 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
Module Connections
There is a 4-pin header on the assembly for making connections.
1 x 4 Header
- VCC = Connect to 3.5 to 16V
- 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.
