So i am trying to make a 24VDC pulse generator for teaching myself how to properly use high speed inputs on Remote telemetry units. Specifically the Micrologix 1100 with 24VDC high speed inputs (BWA version).
However i seem to have hit a slight snag. I have an L298N H-Bridge that should be perfect for this as it is rated to 46VDC.
I have it hooked up, and when I run it through a multimeter I get my input (around 26V) minus 2V which puts me right in my target range. Not to mention through everything the H-Bridge stay fairly cool, I can hold a finger on it no problem.
HOWEVER, I seem to not be getting any amperage, I hook a motor up to it, and nothing happens even if my multimeter was just reading 9V output (testing voltage for my motor as I have a variable power supply).
Thinking it could have been maybe my power supply I hooked the motor directly to it and it jsut spun up and ran like a champ.
Picture failed security check apparently, here is a dropbox link to it. Hbridge