Automation Circuits

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FM Electrocardiogram Monitor with LM331/LM231
Digital Volt and Amp Meter
Triac relay-contact protection
Track-and-hold-sample-and-hold
Nearly half duty cycle multlvibrator
Auxiliary Supply
Load Disconnect Switch Circuit
ESR Meter
Non-Contact Proximity Switch Circuit
4-input mini Logic Analyzer
Emitter-coupled differential amplifier



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