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| Ev Archive for March 2000 |
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| 1425 messages, last added Wed Aug 08 18:47:57 2001 |
[Date Index][Thread Index]
Re: Economizer circuit
A couple of years ago, there was a neat little
circuit used as an economizer. It used a dual
555. One 555 did PWM, and the other one drained
the discharge pin on the first. Result: 100%
duty cycle for 100 ms, then about 50%
thereafter.
--
On Fri, 31 Mar 2000 10:54:04 Lee Hart wrote:
...
>Or, hire a Microsoft engineer to program a dedicated microcontroller to
>pulse width modulate coil current, correcting for battery voltage,
>temperature, etc. Shouldn't cost more than $50-$100. :-)
I tried this. It costs a lot more than that.
It is not worthwhile unless you know that you
will make a lot of them. Before you go this
route, you should think about custom economizer
IC's.
--== Sent via Deja.com http://www.deja.com/ ==--
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