Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 10-10-2011, 09:18 PM   #1
Newbie
 
Join Date: Oct 2011
Posts: 3
Rewards Points: 0
Share |
Default

capacitor problem


I am building a halloween decoration with a dishwasher motor that requires a capacitor start. Have capacitor and motor starts running when capacitor receives current. Since item is motion-activated, I need a relay of some kind to give the capacitor a brief (about 1 sec.) 110 current, then re-open circuit since capacitor cannot be charging while motor is running. Make any sense? Th

cpowell243 is offline   Reply With Quote
Old 10-11-2011, 08:09 AM   #2
I=E/R
 
a7ecorsair's Avatar
 
Join Date: May 2010
Location: Minnesota
Posts: 2,052
Rewards Points: 0
Default

capacitor problem


Quote:
Originally Posted by cpowell243 View Post
I am building a halloween decoration with a dishwasher motor that requires a capacitor start. Have capacitor and motor starts running when capacitor receives current. Since item is motion-activated, I need a relay of some kind to give the capacitor a brief (about 1 sec.) 110 current, then re-open circuit since capacitor cannot be charging while motor is running. Make any sense? Th
No.
Without worrying about the application, does the motor run correctly? In other words, when you plug it in, the motor runs.

a7ecorsair is offline   Reply With Quote
Old 10-11-2011, 10:30 AM   #3
Member
 
Join Date: Jun 2007
Posts: 3,506
Rewards Points: 0
Default

capacitor problem


Sure. You need to know what mfd and voltage the motor capacitor needs to be. Then you need to know how to connect it and to connect a timing device or centrifugal switch on the motor. Then the most important part. How to do this safely. Do you know how to do these things?
J. V. is offline   Reply With Quote
Old 10-11-2011, 08:42 PM   #4
Newbie
 
Join Date: Oct 2011
Posts: 3
Rewards Points: 0
Default

capacitor problem


in response to corsair Q - the motor runs but only after a brief manual connection from capacitor to one of the motor leads. Motor does not start when connected directly to A/C
in response to JV - your suspicions are correct - I barely know which end of a cord goes in the wall socket. However, the motor is now wired so that it will start when the capacitor is manually activated by closing the circuit (between capacitor and motor lead). Can a centrifugal switch be added to a motor - thought that was only a built-in feature? Is there such a thing as a timer that is triggered by the closing of 110 circuit?

Thank you both.
cpowell243 is offline   Reply With Quote
Old 10-11-2011, 09:05 PM   #5
Member
 
Missouri Bound's Avatar
 
Join Date: Apr 2011
Location: Almost Arkansas
Posts: 2,764
Rewards Points: 0
Default

capacitor problem


If you have the motor, and the capacitor, what is missing that took the capacitor out of the circuit in the first place?
Missouri Bound is offline   Reply With Quote
Old 10-11-2011, 09:56 PM   #6
Newbie
 
Join Date: Oct 2011
Posts: 3
Rewards Points: 0
Default

capacitor problem


Missouri Bound,
Long story. Bought motor from appliance shop, repair guy lent me a shop tool he used to start motors, worked well all through Halloween last year, had to return the tool, found a capacitor, now have what I described.
cpowell243 is offline   Reply With Quote
Old 10-11-2011, 09:58 PM   #7
Member
 
Missouri Bound's Avatar
 
Join Date: Apr 2011
Location: Almost Arkansas
Posts: 2,764
Rewards Points: 0
Default

capacitor problem


Got it. Got a model number? You may be able to find some information by googling it...maybe find the proper controls to do what you want. How many wires to the motor?

Missouri Bound is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.