Jump starting psu

Zirax · 21-07-2006, 22:04

Ok, this should give you all a laugh. I have a second psu which I am using to power the water pump/fans.

Well to jump start a psu you have to short two wires right? Well I was thinking of using a switch to turn it on and off. I headed off to Maplin and got a nice red button push switch.... wired up and soldered, push the button... nothing happens.

After a few mins of head scratching I press and hold the red button, sodding works.... so if anyone needs to jump start a psu with a switch, you need a sodding toggle switch!!

William · 22-07-2006, 18:53

Why would one want to jump start it exactly?

mejinks · 22-07-2006, 22:14

Yeah, found that too when making shop display cases.

Burble · 23-07-2006, 21:18

Quote:

Originally Posted by BijWill

Why would one want to jump start it exactly?

Because you need some way of turning it on. One PSU will be turned on when the power switch is hit but the second one won't - hence the need to jump start it or wire in another switch.

William · 23-07-2006, 23:19

I thought that immediately after posting. I am a nonce upstairs.

Flibster · 23-07-2006, 23:43

Relay tbh...

Although that does require some thinking - and circuit designing.

Simon/~Flibster

Mark · 25-07-2006, 01:27

Yup, relay operated by power from the other PSU is the way to go. Switch will do though - just make sure it has good quality contacts (and that you remember to turn it on).

21-07-2006, 22:04	#1
Zirax Goes up to 11! Join Date: Jul 2006 Posts: 4,577	Jump starting psu Ok, this should give you all a laugh. I have a second psu which I am using to power the water pump/fans. Well to jump start a psu you have to short two wires right? Well I was thinking of using a switch to turn it on and off. I headed off to Maplin and got a nice red button push switch.... wired up and soldered, push the button... nothing happens. After a few mins of head scratching I press and hold the red button, sodding works.... so if anyone needs to jump start a psu with a switch, you need a sodding toggle switch!!

22-07-2006, 18:53	#2
William Vodka Martini Join Date: Jul 2006 Location: Church Broughton Posts: 533	Why would one want to jump start it exactly? __________________

23-07-2006, 23:19	#5
William Vodka Martini Join Date: Jul 2006 Location: Church Broughton Posts: 533	I thought that immediately after posting. I am a nonce upstairs. __________________

23-07-2006, 23:43	#6
Flibster Moonshine Join Date: Jul 2006 Posts: 3,388	Relay tbh... Although that does require some thinking - and circuit designing. Simon/~Flibster __________________

22-07-2006, 22:14	#3
mejinks Magners Join Date: Jul 2006 Posts: 2,865	Yeah, found that too when making shop display cases.

25-07-2006, 01:27	#7
Mark Screaming Orgasm Join Date: Jul 2006 Location: Newbury Posts: 15,194	Yup, relay operated by power from the other PSU is the way to go. Switch will do though - just make sure it has good quality contacts (and that you remember to turn it on).