The LED car voltmeter (3)

Posted on Feb 6, 2014

The LED car voltmeter consists of the filter circuit, voltage distribution filter circuit, voltage amplifier circuit and LED display circuit, see as figure 7-77. The regulator filter circuit consists of the 3-terminal IC1 and filter capacitor C1. The voltage distribution filter circuit consists of the resistors

The LED car voltmeter (3)
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R1-R7 and capacitor C2. The voltage amplifier circuit consists of the 6 NOR gate circuitS IC2 (D1-D6). The LED display circuit consists of the LED vl1-vl6 and resistors R8-R13.

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