Adjustable Voltage Regulator AC Motor Speed Controller - by eBay seller axeprice

I have bought 3 of this crappy thing, $ AUD 4.85 each, just a piece of rubbish, it NEVER WORKS ON THE MOTOR.. to whom it may read my comment: DO NOT THROW YOUR MONEY IN THE BIN, SKIP THIS SHIT

this is just a f**king light dimmer

From what I gathered, DC Motor speed control drives rely on changing amplitude. AC Motor speed control drives rely on changing frequency. So for an induction AC Motor, you ideally need a Variable Freq. Drive (VFD)/Freq. Inverter.

The module in the video relies on changing amplitude not frequency. So this is not typical control for AC Motor. But, it can still function as speed control for some AC motors as it changes firing angle in the circuit (maybe someone can explain in more detail).

The price is very tempting given that VFDs are more than 30 times more expensive, may even be more expensive than the motor itself. So can you use this to control AC motor speed?, it seems so from many videos. But, power and torque will suffer which means that if your motor is spinning a load, it may not be able to spin that load at certain speeds. The big question is though, is it safe?

WHICH COMPONENTS CAN I USE TO CREATE A 240 VOLTAGE REGULATOR

Baaaaahhhhhhhhh hahahahahahhaha wtf

thanks 4 video , ,,,, but wt should i do if i want to connect with wireless instead of controlling by hand

TURN DOWN FOR WHAT?! Answer: reduced voltage.

I purchased one of these controllers recently for a friend who wanted to make his bench top drill speed variable.
I wired it as in the video above and placed it in a project box with AC plug going in and an AC socket going out. If you look carefully at the circuit board you will see markings for in and out. It does not matter which way the wires are as long as you are careful in putting the two in and the two out wires paired correctly. After testing it on various appliances like lights, drills, and even a blender, it worked perfect. my friend is still using it on his bench drill and it is still working fine, and that was about a year ago. So not a bad circuit for the price. Sure beats making it yourself.

because it changes amplitude, it will not do a good job of changing speed. It does change torque, however.

as there is discussion on wether this can be used for an ac motor or not, currently I only see it work with a lamp.
As there is no explanation of how this circuit works/what is in it, it is hard to say if it is suitable for an ac motor.
yet, i find it odd, that someone who apparently wants to sell this, doesnt show a video with the target it is supposedly for.
Regulating a lamp is easy, it is regulating an AC motor where the problems start.

The voltmeter will show average voltages. It doesnt say what the voltage looks like over the course of the wave.
I am sure it will in some way vary the speed of a motor, but i am not sure if it is the most suitable

degree,voltage whatever

Buy one: http://www.ebay.com/itm/380817725740
Buy pack of 2: http://www.ebay.com/itm/360836695093
All other sellers stated the same controller as 2000W. But it's not true. At first, we also sold it as 2000W controller. We received a lot of complaints. Then we changed the description to 1000W. I think all other sellers keep receiving complaints. What's why their feedback rating is poor.

This is not an AC motor speed control  It is a light dimmer.  To control the speed of an AC motor, you need to control frequency not amplitude as this clearly shows.

Strange, after the remarks of "hhguitars" and "viko sovolov", there is no answer any more of the maker of the video... Were they wright with there remarks?

What is the lowest voltage that can be achieved by adjusting the potentiometer? 

Hi I bought this module, but it wont regulate, can you please help me. The voltage is just staying percistent.

Hi, I bought this, but, I did not understand how I have to connect the cables, positive and negative, in and out (load) ...
the order of connection can be random or is there a specific predisposition?
Thanks.

Why are you describing motor speed controller and you are showing dimming light??? I want to see AC inductive motor running on this

Hi! very good video. If I invert the position of the 2 input wires, Is it still works?

Why don't you show us using an AC motor instead of a light bulb.  The light bulb is a resistive load and an AC motor would be an inductive load.  In a resistive load amp draw goes down with voltage.  In an inductive load amp draw goes up when voltage is lowered.  So basically you're telling me that at about 30 VAC your AC "motor" speed control can handle about 33 Amps and at 110 VAC can handle about 9 Amps.  You've got to stop billing this thing as a motor control.  You've basically got an over priced Home Depot light dimmer here.  Your misuse of OHM's law here is going to burn up a shit load of inductive motors.

dont buy this this will burn your motor you need to buy a frequency inverter to regulate the speed of na AC motor this can be yoused for DC motor