Is there an easy way to get a 60V sq wave from a 5V digital signal.
I've got a DIY car ECU that outputs a digital 5V tach signal, the problem is that my tach uses the high voltage coil flyback as a signal and won't trigger off that.
Currently I have a MOSFET switching a relay with the contact bar removed - too noisy otherwise - , and it's the flyback off that that makes the tach work.
I don't know much about actual electronics, but is there any simple ideas I could research. I don't really know what to search for because I know nothing.