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| Slowing an electric motor down |
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| John Rudd:
--- Quote from: Lykle on September 18, 2012, 06:56:50 AM ---:update: Well, I tried it and the motor ran slow for about 30 to 40 seconds. And then it jumped back to normal speed. OK, so now I will try a bigger capacity dimmer. I used a 300 watts one and I think I might have a 1000 watts one. --- End quote --- Sounds like you blew the scr or triac...( its gone short circuit which is why the motor runs at full chat) You need to use a dimmer with a bigger wattage rating or you could repair the broken one by changing the the scr or triac for one with a larger current capacity..... |
| Darren:
Bear in mind the triac will get hot ... a good heat sink will help it live longer ... |
| Lykle:
HI, No nothing is blown, because when I switch it off and on again, it will again run slowly for a while and then speed up again. I am using a remote control dimmer switch thingie and I am sure it has protection built in. Unfortunately I don't have the 1000 watt version. That is just a switch. I will have a look around, see what I can find. |
| Darren:
Sounds like the triac is getting hot and shutting down? |
| Lykle:
This is interesting. This is where the motor came from: Kinzo 8E925EP car buffer. Specs claim it is only 110 Watts. So my 300 Watt dimmer should handle it easy. hmm. |
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