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diode for relay


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gudel 
Member - Posts: 10
Member spacespace
Joined: March 05, 2005
Location: United States
Posted: March 23, 2005 at 2:04 AM / IP Logged  
i've got some these bosch relays, is it necessary to put a diode between terminal 85-86? i wonder if these relays already have a diode protection inside it.
thepencil 
Gold - Posts: 1,526
Gold spacespace
Joined: December 16, 2002
Location: Canada
Posted: March 23, 2005 at 9:54 PM / IP Logged  
A discussion on the topic that you are asking.
If the relay has a diode you will be able to see it.
Be careful whose advice you buy, but be patient with those who supply it.diode for relay -- posted image.
gudel 
Member - Posts: 10
Member spacespace
Joined: March 05, 2005
Location: United States
Posted: March 24, 2005 at 3:42 AM / IP Logged  
does the bosch relays have built in diodes? i doubt they would stick it outside the housing. anybody knows? just curious.
Ween 
Platinum - Posts: 1,368
Platinum spacespace
Joined: August 01, 2004
Location: Illinois, United States
Posted: March 24, 2005 at 5:15 AM / IP Logged  

some bosch relays have the diode inside them, most don't.  they may have a supression resistor instead.  usually bosch molds/imprints the case with the components inside the relay.  look for the schematic diagram of a diode on them.  hope this helps.

mark


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