piclist 2001\12\14\063611a >
Thread: controlling power supplies
face BY : mike@KILLspamwhitewing.co.uk

There can be reasons for using a PIC for simple apps like this - if
the whole thing is line powered (i.e. no transformer), you need to
keep triac drive current down to reduce the size of the dropper cap,
so you want to use a narrow firing pulse. If your load is inductive,
you may need to issue several pulses to guarantee reliable firing due
to current phase shift, therefore an 'intelligent' PIC based solution
can sometimes be worthwhile even for apparently trival apps, and the
cost of a 'C508 is hardly going to break the bank!

On Thu, 13 Dec 2001 14:12:48 -0500, you wrote:

>The suggestion was to use a zero crossing opto; why do you need a PIC?
>> {Original Message removed}
<uq2i1uop42m2esukpn17mlrcecnc4t5636@4ax.com> quoted-printable

In reply to: <27F5AF5F2C1BD2119F860008C7F4730A03FC1631@CO-SRV06>
See also: www.piclist.com/techref/power.htm?key=power
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