The ULN2003V12 is a low power upgrade of TI’s popular ULN2003 family of 7-channel Darlington transistor array. The ULN2003V12 sink driver features 7 low output impedance drivers that minimize on-chip ...

A simple and convenient way to interface 2 relays for switching application in your project. This relay driver boosts the input impedance with a regular BC547 NPN transistor (or equivalent). Very ...

Relays usually are driven using optocouplers, which offer isolation between analog and digital grounds to ensure that switching currents in the relay coils do not affect the noise margin of the ...

In many circuits the switching action is performed by a relay, which in turn activates an external load. This part of the circuit is rarely covered in the accompanying text, but there is more than ...

ULN2003-type of transistor arrays that provide seven or eight power transistors in a DIP to control relays, motors and lamps have been popular for ages. Built around bipolar transistors they usually ...