by chance has anybody in their travels
done/seen a project or some code written for a pic. to mimic a
i want to use a 12c508 to replace a lm3524 / tl494 ic for my project !.
project/code for any type of pic used in this area would be of
assistance ,& give me something to work from
thanks for your help & time
At 12:43 03/07/99 -0500, Mike Keitz wrote:
>On Mon, 8 Mar 1999 00:41:26 +1000 Glen <TIG.COM.AU> writes: electme
>> by chance has anybody in their travels
>>done / seen a project or some code written for a pic. to mimic a
>>i want to use a 12c508 to replace a lm3524 ic for my project !.
>I think you're better off using the 3524.
i think so, too.
>Also the problem with control via software is
>it's not continuous like an analog circuit is. That tends to make it
hmm... even the "analog" controller has a granularity of the pwm frequency.
if you can get as fast as your pwm cycle, you probably wouldn't have more
problems with stability, would you?
thanks for your input mike,
even though prices ( in Australian $$ ) for the ic is more expensive
3524's in qty @ $1.25 -------- 12c508 @ $1.76
i didn't mention that i also want to replace a battery charger ic.
i want to cut down on the total component count , hence the pic.
the inverter (pushpull) is to run from different interchangeable dc levels ,
12v , 6v , 4.5v ( primary centre tap)
the same inverter tx is used ---- load & o/p voltages are different
i want to monitor the current pulses when the different batteries are used (
up to 2A max. ).
i want to control the current (different for each load), so that the
inverter will work for a set period of time with a constant output for each
of the loads. ( i don't need to monitor the secondary o/p)
additionally i would like to monitor the battery charging as well
btw f84 @$10.00+ here. too expensive !
the freq of operation is 35 - 45khz.
Mike Keitz wrote:
Gerhard Fiedler wrote:
thanks for your input Gerhard
the frequencies are set to between approx 35 - 45khz.
the sampling rate for the current pulses does not need to be excessive.
stability should be ok.
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>i want to use a 12c508 to replace a lm3524 ic for my project !.
>project/code for any type of pic used in this area would be of
>assistance ,& give me something to work from
>thanks for your help & time
>From my experience in most cases 3525 is 100% better, specially output
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