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Old 10-06-2007, 12:02 AM #1
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Default what is max voltage of GB LD

what is max voltage of GB LD ?


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Old 10-06-2007, 06:11 AM #2
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Default Re: what is max voltage of GB LD

infinity. Or do you mean the max voltage until the diode blows?
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Old 10-06-2007, 06:14 AM #3
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Default Re: what is max voltage of GB LD

;D Good answer. I don't like to think in terms of voltage with LD's. Only current... :P
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Old 10-06-2007, 02:34 PM #4
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Default Re: what is max voltage of GB LD

until it blows
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Old 10-06-2007, 03:02 PM #5
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Default Re: what is max voltage of GB LD

Depends on the diode. Each will be different even if they're from the same batch. The spec sheet should list a typical, max, and min voltage.
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Old 10-06-2007, 03:46 PM #6
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Default Re: what is max voltage of GB LD

Depends on the temperature too... and you'll get higher current for a given voltage as temperature goes up, sort of guaranteeing a blow out if the voltage supply is solid. Only the fact that batteries have internal resistance saves those minimag lasers
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Old 10-07-2007, 03:00 AM #7
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Default Re: what is max voltage of GB LD

for 9v would i have to drop the voltage?
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Old 10-07-2007, 03:04 AM #8
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Default Re: what is max voltage of GB LD

Quote:
Originally Posted by toked323
for 9v would i have to drop the voltage?
If your LD were a cat, 9V would end all 9 of its lives and then some.
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Old 10-07-2007, 03:52 AM #9
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Default Re: what is max voltage of GB LD

say i put six 1N4001 diode on a circuit with a 9v wont it be suiteable for the LD since the drop of voltage?
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Old 10-07-2007, 04:19 AM #10
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Default Re: what is max voltage of GB LD

Toked --

As said here many times -- Forget the voltage and monitor the CURRENT.
6 diodes would give about 4 volts drop.

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Old 10-07-2007, 06:23 AM #11
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Default Re: what is max voltage of GB LD

Just go build the LM317 circuit. It'll cost around 10 USD and WILL save your diode from an early grave. It's an EASY build, the circuit is small enough to fit in many flashlights, only real downside is it needs about 6 Volts to run... But 2 CR123As will run it for quite some time.
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Old 10-07-2007, 07:50 PM #12
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Default Re: what is max voltage of GB LD

i know about the current but i want to use 9v batts cause there cheaper
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Old 10-08-2007, 07:45 PM #13
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Default Re: what is max voltage of GB LD

Quote:
Originally Posted by toked323
i know about the current but i want to use 9v batts cause there cheaper
Well no that is not true. The 9 volt battery might run the diode for a few minutes if you are lucky. So buying bigger batteries, and more of them, will be much cheaper in the long run.
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Old 10-08-2007, 08:03 PM #14
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Default Re: what is max voltage of GB LD

i know but like my dad uses them in his shop and gets energizer 4 for a dollar
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Old 10-09-2007, 02:48 AM #15
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Default Re: what is max voltage of GB LD

Quote:
Originally Posted by pseudonomen137
[quote author=toked323 link=1191628939/0#6 date=1191726012]for 9v would i have to drop the voltage?
If your LD were a cat, 9V would end all 9 of its lives and then some.[/quote]

;D ;D
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