Powerinbg a 240V AC fan from a microwave oven

Status
Not open for further replies.

boylesg

Advanced Member level 4
Joined
Jul 15, 2012
Messages
1,023
Helped
5
Reputation
10
Reaction score
6
Trophy points
1,318
Location
Epping, Victoria, Australia
Visit site
Activity points
11,697
I measure the resistance of the coil at around 240R which means it should have about 1A passing through it.

So, although the magnet wire in the coil is very fine, I would have thought that it could take 1A.

However when I connected the engine up to the mains (carefully), it blew the house fuse.

Is this likely to be due to the engine being damaged - it was a discarded microwave that I got it from - or am I missing something about powering AC engines?
 

what ingine are you talking about?your question is not clear please.
 

I measure the resistance of the coil at around 240R which means it should have about 1A passing through it.
The assumption is completely wrong. It's an AC motor and it's impedance is mostly reactive. We can assume a regular current consumption in a 0.1 - 0.2 A range.

However when I connected the engine up to the mains (carefully), it blew the house fuse.
In case of doubt the winding is defective.

Did you verify that the motor had been originally connected to 240V AC in the microwave? Most likely it is.
 

Status
Not open for further replies.

Similar threads

Cookies are required to use this site. You must accept them to continue using the site. Learn more…