You cannot use the 5V from the USB to power up the transistor and the LOAD because the USB port usually delivers only 100mA, and this is not enough to switch the relay and the LOAD. That is why you ...

If the relay is attached parallel to a switch in some external device (such as a remote control), closing the relay is like closing the switch. Bipolar Junction Transistors (BJT) BJTs are a very ...

Electromechanical relays will require a transistor driver circuit in order to be driven by the Arduino. The typical circuit for driving a relay is the same as the transitor driver above with the ...

An optional RELAY driver output is available at pin 4 of the Arduino board. If you wish to add an electromagnetic relay to switch off/switch on any external electric load, just use this output to ...

Touchless Tattoo Machine Switch Created Using Arduino (video) 2:02 pm July 3, ... This project uses an Arduino Uno, a distance sensor module, and an FET driver transistor module.

Built on Menlo Micro’s market-proven Ideal Switch technology, the MM1205 relay provides superior performance and high reliability over leading suppliers of photo-coupler, MOSFET, Reed, and low ...

Infineon has developed an Arduino shield to demonstrate the potential of its 24V Profet protected power switches. Called the Protected Switch Shield, it is also compatible with the firm’s own XMC ...