Raed pwm amps Acuretly

[u4david]

When using PWM:How do you monitor the current draw if standard automotive gauge wil not be capable to echo Correctly pulsed amps?

[HHO King]

You need a setup like this if you are going to monitor amperage.

http://www.extremehho.com

[donnylynn]

The meter as shown in the link above will measure average current just like an automotive guage.

[Mindcrime13]

an amp meter connected to the positive wire should work

[Alt-Fuel-Sys]

If you want to measure peak current, You'll need an oscilloscope connected to a meter shunt installed in the high current path. Find the peak voltage on the o-scope and devide it by the resistance value of the meter shunt. That will give you peak current.

You can also short around the pwm momentairly, and measure with a standard ammeter. This reading will be slightly high because it doesn't take into account the resistance of the pwm, but it should be close.