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Topic: RobotDyn AC Light Dimmer and Transformer Operation (Read 18 times) previous topic - next topic

Bigguy6216

Building a larger scale foam cutter 110V AC power supply and attempting to replace the conventional Lutron Dimmer switch with an Arduino driven system.  I'm using the RobotDyn Controller

https://www.amazon.com/GENUINE-RobotDYN-Programmable-Controller-Compatible/dp/B071X19VL1/ref=pd_sbs_147_1/130-5355400-7802369?_encoding=UTF8&pd_rd_i=B071X19VL1&pd_rd_r=ff1e9714-38f4-43f5-8da9-67b8b50485a3&pd_rd_w=LQgji&pd_rd_wg=Tw7dE&pf_rd_p=1c11b7ff-9ffb-4ba6-8036-be1b0afa79bb&pf_rd_r=7Z8V68YBMHB4F19M2HZ0&psc=1&refRID=7Z8V68YBMHB4F19M2HZ0

It works great as a light dimmer but when I use it with a transformer I get a buzz.  My research has found that the problem may be because of leading edge/trailing edge issues.  Wondering if anybody out there has faced this issue and have any solutions to offer.

Cheers!


Paul_KD7HB

Transformers are designed for a sine wave and nothing else, unless it is a pulse transformer. But in your case, does the buzz hurt anything or is it just annoying? Does the transformer get hotter than normal?

There should be no problem in doing what you are attempting, unless the above is a problem.

Paul

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