Don't say your analog ammeter is unuseful! I think the whole point
behind the analog gauge is to give you a more easily readable
indication of of approximate power usage - when you mash the pedal, it
pins the meter, when you are cruisin' it is much lower. keeping the
meter steady is good, spikes are bad. more accurate readings you'll
want to take off your Emeter. if you want to make your analog gauge
more accurate, I think what it needs is not a compensating circuit but
just a calibrated scale on the face of the meter. I imagine however
that this would be different for every application and therefore not
practical.
just curious Victor - don't the pulses mostly get filtered out on the
battery side? How does the Emeter stay accurate?
Seth
On Wednesday, October 9, 2002, at 08:39 PM, John Lussmyer wrote:
> At 05:26 PM 10/9/2002 -0700, Victor Tikhonov stated:
>> If you draw PWM 200A pulses 50% duty cycle (like
>> 200A-0A-200A-0A every 100us or so), the average current
>> is 200*0.5=100A but your analog movement meter may show 60...70A.
>
> Is there any kind of simple circuit I could add to the ammeter to make
> it useful?
>
> --
> John G. Lussmyer mailto:[EMAIL PROTECTED]
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>
>
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