He wanted to use these with common microcontrollers and instead of buying a driver he designed and built ... of the design he was able to control the relay using 3.3V, 5V, or 12V.

From there, a relay can be hooked up to the driver to control the spindle for a router, or a whole bunch of fans for a homebrew laser cutter. The schematic and Gerber files are up on [Bart]’s ...

Often a need arise to interface output of the microcontroller with an electromagnetic relay (EMR). Relays are devices which ... Galvanic Isolation says that the driver circuit is separated from the ...

The two coils are never energized at the same time. If you wish to use a dual-coil relay, but the only driver you have available is for a single-coil relay, there is an easy way to convert that single ...

Texas Instruments (TI) has introduced what it claims is the industry's first fully integrated, seven channel relay driver that can support low voltage relays from 1.8 to 5V. The ULN2003LV is designed ...