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Some help to control 120VAC Motor direction

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Kaze105

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I have a motor that runs on 120VAC. It has 3 connections in total. 1 for 120VAC(hot) and the other two go to (neutral), but 1 connection rotates the motor clockwise, while the other counter clockwise.

The motor connection diagram - **broken link removed**

I want to control the direction of the motor using a 5V AC output from a uC (ATMEGA16).

Anyone have an idea of what kind of circuit should be used. My original circuit used a basic Relay that closes the connection when 5V DC is applied. The problem about this is that it can only connect to one of the 2 neutral connection of the motor and the relay uses DC voltage.

Sorry if this ends up a dumb question, thanks for any help.
 

You can use a mechanical relay or two solid state switches.

You should not change direction until motor has stopped (nearly stopped) rotation from previous direction. Reversing while motor is spinning in other direction will cause excessive surge current.
 

Do you have a link about either one that fits my specification? I have checked both relay, but I do not see anything that can be controlled by a 5V AC. Again, I do have a SSR said above that only works with DC voltage.

Thanks

Edit: Sorry for error, but I will have to remove the option of a relay and also the control will be DC, not AC.

I do understand I could possibly control it using a triac, but anyone know some specific on triacs?

Thanks
 
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Not sure why you have 5v AC from a uC but you can just put a rectifier and filter cap for a DC controlled solid state switch.
 

Thank you for the reply. The message above yours is edited stating its DC, its just that how I control the motor will have to be different from your original suggestion. (No Relays) I have been suggested that triac may work, but im wondering if anyone else knows about triacs better.
 

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