kiffy Posted September 18, 2014 Report Share Posted September 18, 2014 (edited) hi guys, ive been working on a hand held spotter and have intergrated my 501b into the case and wanted to power it from the 12v battery which ran everything else so i bought and fitted a 12v to 3.7v converter (photo below) and although my torch lights up ok its pulsing on an off... so wondered if anyone had used one of these and knew if it could be this doing it? i tested the torch with a 3.7v battery before i cut and fitted it into the case so know it worked then edit to say all joints are soldered / heatshrunk so it isnt a loose connection Edited September 18, 2014 by kiffy Quote Link to comment Share on other sites More sharing options...
Davyo Posted September 18, 2014 Report Share Posted September 18, 2014 (edited) I use these (similar,same make but the wires come out oppasite sides) and it works fine, run a t20 on the roof of my 4x4. Just about to fit another one to my spotter when the new E700 comes. Edited September 18, 2014 by Davyo Quote Link to comment Share on other sites More sharing options...
kiffy Posted September 18, 2014 Author Report Share Posted September 18, 2014 mmm... think i might have to unsolder the wires and connect a battery back upto it to check it again... Quote Link to comment Share on other sites More sharing options...
dolphin Posted September 18, 2014 Report Share Posted September 18, 2014 just make sure its all fine before i buy it atb dolphin Quote Link to comment Share on other sites More sharing options...
kiffy Posted September 18, 2014 Author Report Share Posted September 18, 2014 yours is fine and on its way to you this is one of my new toys Quote Link to comment Share on other sites More sharing options...
Davyo Posted September 18, 2014 Report Share Posted September 18, 2014 (edited) yours is fine and on its way to you this is one of my new toys I always check it once i have the soldering done on the driver to see if ok, then i put the driver back in the T20. You do get the odd dodgy converter ( and thay explode if you cross the wires as i found out when i didnt have my glassess on) The ones i used in the past used to be Y+ R- but these ones are R+ Y- Thats when mine went bang (its like a party popper but 20 times the crack & **** flys all over) Edited September 18, 2014 by Davyo Quote Link to comment Share on other sites More sharing options...
FalconFN Posted September 18, 2014 Report Share Posted September 18, 2014 I have used these 201093430303 to step down from 12 v to 5.5 v. Its a variable output buck converter so you can get the output v exactly right. Plus it is tiny. Quote Link to comment Share on other sites More sharing options...
kiffy Posted September 29, 2014 Author Report Share Posted September 29, 2014 i boght a new converter a variable output one. with a 3.7v battery outputing nera enough 3.7v the unit runs ok. but with the converter on i need abnot 7v to get it to run without flashing... strange but im taking the chance and leaving it set just over 6v Quote Link to comment Share on other sites More sharing options...
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