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Showing posts with label
piezo sounder
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Showing posts with label
piezo sounder
.
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Thursday, 4 August 2011
Water-level Alert
The following circuit is a water level alert. Feature: Simple circuitry, low voltage, 1.5V supply voltage, portable unit, battery powered, low current consumption. Component : Resistor, capacitor, LED, 1N5819 diode, 7555 timer IC, piezo sounder, Battery. (redcircuits.com)
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