Actions
Forum Thread Details
  • State Not Answered
  • Replies 41 replies
  • Subscribers 106 subscribers
  • Views 8230 views
  • Users 0 members are here
Related

Need to replace resistor 900 ohms / % Tolerance

Alex-andre 
Hello there,

I need to replace this resistor which appears to be a 900 ohm with a % tolerance. (4 rings = Black / White / Red / Silver or Grey and around 25mm long)

I bought one with almost same features (OHMITE OX102KE Through Hole Resistor, 1K ohm, OX, 1W, ±10%, Axial, 300V) but it doesn't fit, it's far too small compare to the one I need to replace.

Do you have any suggestion where to buy or how to replace it ? 

I attached a picture below.

Thanks a lot

Aleximage
Parents
  • 0

    Based on my experience with this style relay it is highly probable that the resistor is across the Normally Open relay contacts and serves as a soft start to the load. As configured it would current limit the start until the relay closes and provides full power to the load. Before the relay closes the resistor will get hot. This resistor does not look failed and likely would test within its original nominal value. As recommended by others get a cheap multimeter and test the resistance to be sure. If you remove the resistor from the board you may find that the colors of the bands are in better shape on the underside in case you want to verify the original value. If I had to guess I would say that it is at least a 5 Watt resistor. 

Reply
  • 0

    Based on my experience with this style relay it is highly probable that the resistor is across the Normally Open relay contacts and serves as a soft start to the load. As configured it would current limit the start until the relay closes and provides full power to the load. Before the relay closes the resistor will get hot. This resistor does not look failed and likely would test within its original nominal value. As recommended by others get a cheap multimeter and test the resistance to be sure. If you remove the resistor from the board you may find that the colors of the bands are in better shape on the underside in case you want to verify the original value. If I had to guess I would say that it is at least a 5 Watt resistor. 

Children