The power supply unit (PSU) carries out a number of tasks.

 

a)    What is the actual value of the regulated supply voltage that it provides to the system?

 

b)    What would be the influence on that voltage at the detection devices that are powered by that supply if the detectors were to be installed at an extended distance from the control equipment?

a. Ideally 13.69 but that is now 13.75 as most diag cant hit that resolution

 

b. Ohms law depends on the resistance and the distance. Resistivity is what matters. If the course is up to date id assume you discussed copper vs cca

Thank you very much for your help Sir.

So basically that means over extended distance voltage will drop is that correct ?

Edited October 10, 20169 yr by caveo security

yes it will. The more current you pull the more the volts will drop. No current = no vd. If you pull a load then you need to think about it

Why don't you do basic electronics course first? It will teach you this stuff 

 

Then house bash dot com 

https://www.amazon.co.uk/gp/offer-listing/0860208095/ref=tmm_pap_used_olp_sr?ie=UTF8&condition=used&qid=1476265557&sr=1-1

 

I'm not joking OP - if you are struggling now you'll thank me later

When I did my course, i did it on site and one thing that come up was that maybe everyone should do the basic/ohms law course first. I think it was being put forward as a suggestion.

 

My experience is that the majority (maybe being a bit unfair, but certainly a lot) of engineers don't know how to use their multimeter effectively. 

3 hours ago, norman said:

My experience is that the majority (maybe being a bit unfair, but certainly a lot) of engineers don't know how to use their multimeter effectively. 

 

Next your be telling me it's not a door stop, 

I did a access course at Tavcom and the guy i was paired with seemed keen to guess the fault that was put on the test rig rather then using his meter, I like using a meter do the tests look at what you have. Then you can make a correct diagnosis. If someone asked me what tool i could not be without it would be my meter,

 

Mine would be my fleshlight.