Asymmetric Timer

Description: A timer circuit with independent mark and space periods. .....

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Motorcycle Alarm No. 2

This circuit features an intermittent siren output and automatic reset. It can .....

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Car Alarm and Immobilizer

Description: This circuit features exit and entry delays, an instant alarm zon.....

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Motorcycle Alarm

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5 Zone Alarm System

Description: This is a complete alarm system with 5 independent zones suitable.....

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Gate Alarm

Description: A cheap and simple gate alarm made from a single CMOS Integrated.....

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Power supply failure alarm

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Theft preventer alarm

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Rain Alarm

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A simple electronic buzzer

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Water Level Indicator with alarm

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Melody generator for greeting cards

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