Relay Question - Electronic Circuits Projects Diagrams Free

yukanti · 12th March 2005, 06:41 PM

I have this 9VDC relay (attachment)the question is:
it's a 5-pin relay... which is output and input?
i've searching for the datasheet, but can't find it anywhere... someone help?

one more question... anyone knows what kind of equivalent component that can substitute transistor MPS6531

thanks for the helps....

Russlk · 12th March 2005, 07:03 PM

The two pins on one side connect to the coil. You can verify that with an ohmmeter; it will measure something over zero ohms. The three pins on the other side are a single pole double throw switch. You can find the normally closed contacts with an ohmmeter. If you don't have one, get one, they are inexpensive.

eblc1388 · 13th March 2005, 09:41 AM

OOps double post.

eblc1388 · 13th March 2005, 09:42 AM

Quote:

Originally Posted by yukanti

I have this 9VDC relay (attachment)the question is:
it's a 5-pin relay... which is output and input?

The two pins at one end is most definitely not the coil connection. Check the pins seperation against the image to see whether it is correct for your relay.

MPS6531 is a 60V 0.6A NPN transistor, for replacement, use BC337A, BC637 or BC639. In case that you use it for driving this relay, then try any general purpose NPN transistor.

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12th March 2005, 07:03 PM	(permalink)
Russlk	The two pins on one side connect to the coil. You can verify that with an ohmmeter; it will measure something over zero ohms. The three pins on the other side are a single pole double throw switch. You can find the normally closed contacts with an ohmmeter. If you don't have one, get one, they are inexpensive. __________________ see my website: www.geocities.com/russlk