Narve led cordless lamp tech help

Submitted: Thursday, Jan 22, 2009 at 09:39
ThreadID: 65321 Views:1820 Replies:5 FollowUps:4
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I have been given a Narva led cordless lamp with a faulty battery & i removed the battery (4.8 volt) & connected the power wires direct to 12 volts & it works ok (only had it on for about 30 seconds)

Inside there is a circuit board with a silver box on it that says it is a convertor to 8 volts from memory but i have no idea what everything else does

Before i make up a proper lead i was wondering if any electronic techs on the forum can make a educated guess if it will be ok running on 12v or if i will fry something inside (if so i wont bother making up a permenent lead)

Any help or thoughts would be appreciated

Regards Don
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Reply By: troopyman - Thursday, Jan 22, 2009 at 10:02

Thursday, Jan 22, 2009 at 10:02
Is it the blue or orange narva handheld ?
AnswerID: 345482

Follow Up By: troopyman - Thursday, Jan 22, 2009 at 10:47

Thursday, Jan 22, 2009 at 10:47
Look on the narva site , you can buy spare batteries .
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FollowupID: 613464

Reply By: Member - Mike DID - Thursday, Jan 22, 2009 at 10:19

Thursday, Jan 22, 2009 at 10:19
It's very unlikely it was designed to work over such a wide range of voltages.
AnswerID: 345484

Follow Up By: Member - Graham H (QLD) - Thursday, Jan 22, 2009 at 10:58

Thursday, Jan 22, 2009 at 10:58
You can buy a little kit at Dick Smiths to reduce the voltage down to 8 volts Cost you $6.
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FollowupID: 613465

Reply By: donk - Thursday, Jan 22, 2009 at 14:51

Thursday, Jan 22, 2009 at 14:51
Thanks guys for the input so far

It is the Blue Handheld

I had another look inside & i stuffed up on the converter thing

It actually says

DC-DC Convertor
Constant current
Input 4v-8v /2.5 w
Output 100Ma/1.8w

I know batterys are available but i dont want to spend any money on it (around $60)

If i can run it direct off 12v i will throw a lead on it but otherwise i wont bother (i already have a working one the same & a 12v fluro

Regards Don





AnswerID: 345510

Follow Up By: Member - John R (QLD) - Thursday, Jan 22, 2009 at 20:04

Thursday, Jan 22, 2009 at 20:04
If the output is 100mA/1.8W then that means 18V output, does it not? Possibly then you could also cut out the convertor, and just run lights directly off 12V? The light may be a bit duller though, if it really needs 18V. Not sure you'd want to hack the light apart that much though.

Cheers, John

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FollowupID: 613516

Reply By: autosparky - Thursday, Jan 22, 2009 at 23:16

Thursday, Jan 22, 2009 at 23:16
roughly how old is it? major retailers may give warrenty on it some narva products have 2 yr warrenties
AnswerID: 345578

Follow Up By: donk - Thursday, Jan 22, 2009 at 23:29

Thursday, Jan 22, 2009 at 23:29
The customer has received a replacement one & i got the faulty one to play with

Regards Don
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FollowupID: 613539

Reply By: WRVA - Thursday, Jan 22, 2009 at 23:54

Thursday, Jan 22, 2009 at 23:54
Donk,
it's Steve.
I sell all the Projecta range,Navra etc etc. and look after Exploroz members. Do you want to send me an email . I am sure you and I were at Tumut,Cootamundra .Gotta go the Heavens have opened up, water water every where just not where it's needed the most.
WRVA
AnswerID: 345582

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