speed control board

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‘cos lamp dimmers are [typically] not specified for inductive loads

[ but there again … ]

MichaelG.

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https://pe2bz.philpem.me.uk/Comm01/-%20-%20Parts-NonActive/Lights/Dimmers-Control/lightdimmer.html

Edited By Michael Gilligan on 30/08/2022 22:12:38

Friends, I gave 220volt ac to the motor, but the motor did not run. When I give dc voltage with pwm and bridge diode, it makes a sound like DINNN. someone install a 24 VDC scooter motor to emco lathe.for you is this better.if I use a 24VDC scooter motor, can I control easy VDC with 3055.

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6p2H; touchmove:FwuNnf; touchend:yfqBxc; touchcancel:JMtRjd; focus:AHmuwe; blur:O22p3e; contextmenu:mg9Pef;mlnRJb:fLiPzd" jscontroller="soHxf" jsname="IOOiDc">6p2H; touchmove:FwuNnf; touchend:yfqBxc; touchcancel:JMtRjd; focus:AHmuwe; blur:O22p3e; contextmenu:mg9Pef;mlnRJb:fLiPzd" jscontroller="soHxf" jsname="IOOiDc">

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That suggests that the motor itself is DC only, and that the bridge rectifier sometimes supplied with it **makes it useable [and presumably reversible] on AC

Further investigation [and maybe dissection] required, methinks !

MichaelG.

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**  see the photo in the post by Andy_G

Edited By Michael Gilligan on 01/09/2022 08:21:54

The motor may have been an unlucky choice for Şaban. Although labelled as an AC motor, it appears to be DC, a suspicion confirmed by it sometimes being supplied with a bridge rectifier. 9W output is small for a high-voltage motor, so my guess is the motor is normally used to drive the turntable of a microwave oven where rectified mains AC is an easy option. However, the need for high-voltage DC makes a variable power supply for speed control difficult. A Triac type is likely to vibrate the motor badly, and a PWM might be audible too.

I'd change the motor for one that matched a low voltage DC controller but much depends on what Şaban has available. Quite cheap if the parts are in one's junk-box, pricey if they have to be bought new.

Dave

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