[chbot] 12V driver

Mark Atherton markaren1 at xtra.co.nz
Mon May 24 01:34:20 BST 2021


After all that I forgot...

ULN2003 - seven drivers in a 16 pin DIP, Jaycar ZK8855, $5.90 ea.

5V in, capable of switching 500mA at 50V. Built in back EMF diode (tie 
pin 9 to the positive rail associated with the load).


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