Re: Controlling 220V ac using 5V analog signal
- From: "Phil Allison" <philallison@xxxxxxxxxx>
- Date: Sun, 13 Nov 2005 22:22:47 +1100
"shehry"
> sorry if i couldnt explain it correctly.
>
> actually we were trying to make a motor speed controller. i was trying
> to use a sewing machine motor.
>
> i thought of generating an analog signal using a microcontroller and
> using that signal i wanted to control the amount of voltage that would
> go to the motor at the end of the day.
>
> in other words i was trying to replace the pedal of the sewing machine
> by an electric signal.
>
** The usual and most efficient method to control a "universal motor " is
to use a triac.
Try searching Google with "triac" and "phase control".
Also see "opto isolator" & "triac driver ".
.......... Phil
.
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