Rob Morley  wrote:
> On Sat, 30 Sep 2017 01:12:32 -0500
> Michael J. Mahon  wrote:
>
>
>> For heating systems with lags of hours, it is important to anticipate
>> a future need for heat as well as anticipating the considerable
>> overshoot that will occur after the heat is switched off. I found
>> this simple PWM approach quite effective.
>>
> PWM usually uses a frequency somewhat greater than 0.000023 Hz.  :-)
>
>

Usually, but we're talking loooooong time constants here! ;-)

I consider it "analogous" to PWM. ;-)

--
-michael - NadaNet 3.1 and AppleCrate II:  http://michaeljmahon.com

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