I guess your gauges probably pull no more than 1/2 amp. The reason I say this is that the original reg was 1 amp with a crappy heat sink and it ran fairly hot.I'm dumb! I started another topic thinking I'd not posted about it!! DUMB ME!
I've built a reg from parts from work and its not working properly!
I've got it putting out 7v, but only 1.2 amps. How much amperage does the gauge need? I know my gauge works, but not with this current setup?
It's easy to see that you have 7v.I got to thinking about it and before I started messing with my gauges, I'd just hooked an alkaline 9v battery to the gauge and it moved it. So this reg I've built should be more than ample.
I'm wondering if my darned gauge or sending unit failed when the last reg did? I'll have to pull out the meter tomorrow and start checking. I'd hope it was the gauge and not the sending unit, that thing looks like a bear to replace!
It's not putting out ANY amps just sitting there. There has to be a complete circuit to make current flow. Current only flows when there is a load on the output of the regulator.It's putting out 1.2 amps while just sitting there. I've not tried to check it under load yet.
Ok the meter shunt was the load. At that point, if you had a second meter, and you measured the voltage at the same time, you would have seen about 1 volt at the same time.I didn't put it inline with the gauges, I just hooked the output to ground and it was putting out around 1.2 amps. I didn't try to see what it did while hooked to the gauges cause the wife was yelling at me! It's amazing how she thinks her birthday is more important that working on the bike
Ok, if it turns out to be 7v break the output voltage line and insert the current meter in series with it and see how much current you are pulling. Also take note of the heating of the heat sink at the regulator.I'll have to check and see tomorrow. I did it last night and want to say it was 7v, but I'm not sure.