I need to hack together something to replicate the pulse output of an energy meter but my lack of electronics knowledge is hampering me somewhat.
I have a meter here which is generating a pulse and using an oscilloscope (on order) I hope to have the details (voltage, current, duration) soon though I've an inkling that it is around 50ms long and 30VDC/10mA (according to meter manufacturer instructions).
I've also been informed that I might need to use an "open-collector
transistor with 100R series resistance".
I have an arduino, breadboards and some components. It doesn't feel like it should be a particularly difficult task which for someone with a modicum of knowledge and I see broken down into two parts 1) make the pulse 2) send it regularly, ideally with the ability to manually vary the frequency.
I could do with a starting point. Can anyone help please? Either on the characteristics of the pulse or how to generate it. I'd also be interested in something that I could grab off the shelf to do the pulse generation (my fallback option is to use a real meter and simulate consumption).