Relay control - Electronic Circuits Projects Diagrams Free

GForce2010 · 6th September 2007, 12:45 AM

I'm using a transistor to switch a relay. I know i have to include a diode but i havn't had any experience of diodes yet. I want to know if anybody could give me a part number of a suitable diode to use.

Any help would be greatly appreciated.

yngndrw · 6th September 2007, 01:01 AM

1N4001 ?

What size of relay is it ? Pretty much any diode will do unless the relay is super-sized.

GForce2010 · 6th September 2007, 01:05 AM

It's only a small PCB relay.

Looks like a trip to the store again.

I've just had a look online and have found a 1N4001G, can anyone tell me what difference the end letter makes?

Thanks for the help.

yngndrw · 6th September 2007, 01:08 AM

Do you not have any diodes lying around ? Pretty much any will do. Another common one is 1N4148, which is a low power signal diode. (But will still be more than enough)

Edit: The datasheet says that it's got a "Glass passivated junction" - Don't ask what that means though ....

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6th September 2007, 12:45 AM	(permalink)
GForce2010	Relay control I'm using a transistor to switch a relay. I know i have to include a diode but i havn't had any experience of diodes yet. I want to know if anybody could give me a part number of a suitable diode to use. Any help would be greatly appreciated.

6th September 2007, 01:01 AM	(permalink)
yngndrw	1N4001 ? What size of relay is it ? Pretty much any diode will do unless the relay is super-sized.

6th September 2007, 01:05 AM	(permalink)
GForce2010	It's only a small PCB relay. Looks like a trip to the store again. I've just had a look online and have found a 1N4001G, can anyone tell me what difference the end letter makes? Thanks for the help. Last edited by GForce2010; 6th September 2007 at 01:07 AM.

6th September 2007, 01:08 AM	(permalink)
yngndrw	Do you not have any diodes lying around ? Pretty much any will do. Another common one is 1N4148, which is a low power signal diode. (But will still be more than enough) Edit: The datasheet says that it's got a "Glass passivated junction" - Don't ask what that means though .... Last edited by yngndrw; 6th September 2007 at 01:36 AM.