Tag: LM78L05
![Liquid or Air Pressure Switch with Relay Liquid or Air Pressure Switch with Relay](https://www.electronics-lab.com/wp-content/uploads/2020/11/003-5-e1605814918452.jpg)
Sensor
Liquid or Air Pressure Switch with Relay
This pressure switch project is built using a piezoresistive transducer, LM358 OPAMP as comparator, and a relay. The circuit activate the relay when the pressure in a system exceed a given set-point. Basically, this switch can power ON or OFF a pump, valve, motor, when certain pressure...
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