Simple Automatic Airflow Detector Circuit Diagram

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How Does Automatic Airflow Sensor Circuit Diagram Work? This circuit is able to trigger a sign when there is an airflow. The sensor used in this circuit is the bulb filament. If there is no airflow, the resistance of the filament will be low. On the other hand, if there is an airflow going through […]

Simple Digital Voltmeter Circuit Diagram

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How Does Digital Voltmeter Circuit Diagram Work? This circuit is useful to measure the voltage with the help of 7-segment display. The main IC used in this circuit is ICL 7107. It has many advantages such as the high performance, high accuracy, high display stability, has 3.5digit ADC, 7-segment decoder, 7-segment controller. Analog input voltage […]

Simple Digital Stopwatch Circuit Diagram

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How Does Simple Digital Stopwatch Circuit Diagram Work? This circuit is the simple form of digital stopwatch. This circuit uses IC1 timer LM555, IC2 4-digit counter MM74C926. In the initial state, the 7-segment will display 0000 (4-digit). If the switch S2 is pressed, timer will start to count. Push S2 again and the timer will […]

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