How to connect the TTP223 touch sensor with ESP32 to control relays. explained the circuit and source code in detail. How to connect the TTP223 touch sensor with ESP32 to control relays. explained the ...

This simple temperature relay circuit can be used to signal a fire or setpoint for temperature monitoring function. You need to adjust P1 so that T1’s base voltage is 0.5V smaller than the emitter ...

Safety is a major concern in a good many motor-driven applications. This is true in industrial applications where motion starts when power is applied and especially true when power is restored after ...

In a not yet dim past we started this series with an ‘energy-efficient relay’. Here is a variation on that topic, and a super-simple one at that. The big disadvantage of the energy-efficient relay ...

An RC circuit in series with the coil allows full-current turn-on for reliable relay operation, then reduces the current to save power. Fellow engineer Sanjay R. Chendvankar of Mumbai, India, recently ...

Abstract: After touching upon the original Boolean algebra, which was developed about 1847 for the study of logical propositions and syllogisms, the paper goes on to discuss the ways in which the ...