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Author Topic: In situ chargeing on Fairmount Alpine  (Read 1079 times)

david48

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In situ chargeing on Fairmount Alpine
« on: April 25, 2016, 05:38:10 PM »



I wanted to check the charge in both batteries at No 1 and No2 charge sockets ,a plug with tails was made up .( test lead)
Test 1 , plug into No1 charge socket ,volt meter connected to the tails .
Result ,a reading of 12.82 volts .
Test 2 , plug into No2 charge socket ,volt meter connected to the tails.
Result , a reading of 00.00 volts.
Test 3 , check continuity between charge socket No 2 and  battery plug No2 .
Result , continuity on both centre pin on socket to + red on battery plug ,
 No continuity on outside of plug to - black on battery plug .
Never assume ,so tested plug with tails .(test lead)
Result ,centre tested ok ,outer tested ok.
Test 4 , without using test lead . Test No 2 socket to No 2 battery.
Result ,continuity between centre pin on socket + red to + red on battery plug ,and continuity on - black on socket to -black on plug .
Test 5 ,check continuity between  - black on sockets No 1 and 2 back to P102 .
Result , all ok .
Test 6,set up battery charger,using test lead into No1 socket No 1 battery was showing 12.82 volts at No 2socket showing no connection to battery .
My conclusion is that when the test lead is plugged in to No2 charge socket it looses its -black .
The question is I suppose is there a socket that when a plug is inserted that it disconnects , when I built up the circuit I noticed on the base there was 3 connections when I tested them 1 was centre pin + the other 2 were return/ - neg / 0 volts . So I just connected one of the pins .
Sorry for being so long winded but it's the only way I can make some sort of sense out of it .
Thanks for the help
Regards
David



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Umi_Ryuzuki

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Re: In situ chargeing on Fairmount Alpine
« Reply #1 on: April 25, 2016, 06:45:58 PM »

Quote
The question is, I suppose, is there a socket that when a plug is inserted that it disconnects?

Actually there are.

Instances would be:

Plugging in power to a device, and disconnecting the battery source.
Plugging in a speaker, and disconnecting the device speaker.
Plugging in earphones and disconnecting the device speaker.

So you could have connected to the normally closed contact, and it is disconnecting when you insert the plug.

david48

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Re: In situ chargeing on Fairmount Alpine
« Reply #2 on: April 25, 2016, 11:46:07 PM »

Thanks Umi ,I will strip it out and recheck it .
David
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malcolmfrary

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Re: In situ chargeing on Fairmount Alpine
« Reply #3 on: April 26, 2016, 09:09:50 AM »

Most stereo headphone jack sockets (and mono ones, too) have a variant with a switch or switches on the tip and ring.  And on one I saw, on the sleeve as well.  Its how the speakers get switched off when you plug headphones in.
Good for plugging into power, but because they are exposed, not good for plugging power in.  Without piccies, it is hard to say, but yes, it does sound like you have connected to the "wrong" side of the switch.  Check for continuity when plugged in on the unused contact.
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david48

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Re: In situ chargeing on Fairmount Alpine
« Reply #4 on: April 26, 2016, 09:36:00 AM »

Just going out to clear the snow off the path to the shed ,then I will strip out the charge system and re test . Thank you Malcom /Umi
David
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david48

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Re: In situ chargeing on Fairmount Alpine
« Reply #5 on: April 26, 2016, 11:24:07 AM »

Well that is the connections remade and it tests out OK ,it was only by good luck that one was right . Now on to try and sort channels for Noisey Thing and decoder, no dought I will be back.
Thank you again
David
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