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Rkcstr driver max voltage

L@z3r

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Very much a n00b question, but i have a 120mw Blu ray laser with a 130ma Rkcstr Fixed driver on it.
Whats the max amount of power i can supply the driver ? i as thinking around 12v's ?
Thanks
 

Th0ughts

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It is around 12.x volts. It specifies somwhere in his thread, but by knowledge I know that it is 7.x-12.x
 

Mohrenberg

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Th0ughts said:
It is around 12.x volts. It specifies somwhere in his thread, but by knowledge I know that it is 7.x-12.x
yeah somewhere around 12 i believe.

i'm about aot post an even noobier question. stay tuned!
 
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L@z3r said:
[quote author=HumanSymphony link=1234032611/0#3 date=1234033509]you can bybass the IC and make it 16v :D
How do i do that ?
EDIT: 200th post w00t !![/quote]
Simply a jumper wire from the positive input to the mosfet pin. I had ryan do it for me a couple times. He's the one who told me about it :D
 

L@z3r

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HumanSymphony said:
[quote author=L@z3r link=1234032611/0#4 date=1234033637][quote author=HumanSymphony link=1234032611/0#3 date=1234033509]you can bybass the IC and make it 16v :D
How do i do that ?
EDIT: 200th post w00t !![/quote]
Simply a jumper wire from the positive input to the mosfet pin. I had ryan do it for me a couple times. He's the one who told me about it :D[/quote]
Hey Nick, Do you have a picture of the Mosfet or w/e its called ? Or can you show me a diagram ? Thanks
 

L@z3r

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Also even if the drivers max is 16v, will the diode still get the safe 5volts ?
 
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Connect the points as t3h pic shows. It will still work as normal, but you won't have reverse polarity protection. If you're not hecka foolish and can put the batteries in the correct way, this shouldn't be a problem :p
 

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daguin

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HumanSymphony said:
Connect the points as t3h pic shows. It will still work as normal, but you won't have reverse polarity protection. If you're not hecka foolish and can put the batteries in the correct way, this shouldn't be a problem :p
It just struck me that this could be pretty helpful in builds that use a three AAA carriage.  It is VERY difficult (although granted not impossible) to put the batteries in backward when using a battery carriage.  

The only other real issue is that the excess voltage is being converted to heat.

Peace,
dave

[highlight]**EDIT**[/highlight] Something else just came to mind. If someone blows the driver by giving it too much voltage, can the driver be salvaged by placing this jumper to bypass the mosfet?
 

L@z3r

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HumanSymphony said:
Connect the points as t3h pic shows. It will still work as normal, but you won't have reverse polarity protection. If you're not hecka foolish and can put the batteries in the correct way, this shouldn't be a problem :p
Connect what points ? the arrow only points to 1 leg of the mofset ???
 
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L@z3r said:
[quote author=HumanSymphony link=1234032611/0#8 date=1234041000]Connect the points as t3h pic shows. It will still work as normal, but you won't have reverse polarity protection. If you're not hecka foolish and can put the batteries in the correct way, this shouldn't be a problem :p
Connect what points ? the arrow only points to 1 leg of the mofset ???[/quote]
where the arrow starts ::)
 

L@z3r

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HumanSymphony said:
[quote author=L@z3r link=1234032611/0#10 date=1234042584][quote author=HumanSymphony link=1234032611/0#8 date=1234041000]Connect the points as t3h pic shows. It will still work as normal, but you won't have reverse polarity protection. If you're not hecka foolish and can put the batteries in the correct way, this shouldn't be a problem :p
Connect what points ? the arrow only points to 1 leg of the mofset ???[/quote]
where the arrow starts ::)[/quote]
Oh the pos input. Ah i c. Thanks. So i just solder a wire to the 2 points ? or can i jut put a blob of solder on it ?
 
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L@z3r said:
[quote author=HumanSymphony link=1234032611/0#11 date=1234044700][quote author=L@z3r link=1234032611/0#10 date=1234042584][quote author=HumanSymphony link=1234032611/0#8 date=1234041000]Connect the points as t3h pic shows. It will still work as normal, but you won't have reverse polarity protection. If you're not hecka foolish and can put the batteries in the correct way, this shouldn't be a problem :p
Connect what points ? the arrow only points to 1 leg of the mofset ???[/quote]
where the arrow starts ::)[/quote]
Oh the pos input. Ah i c. Thanks. So i just solder a wire to the 2 points ? or can i jut put a blob of solder on it ?[/quote]
should probably just use a wire.
 

L@z3r

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HumanSymphony said:
[quote author=L@z3r link=1234032611/0#12 date=1234045738][quote author=HumanSymphony link=1234032611/0#11 date=1234044700][quote author=L@z3r link=1234032611/0#10 date=1234042584][quote author=HumanSymphony link=1234032611/0#8 date=1234041000]Connect the points as t3h pic shows. It will still work as normal, but you won't have reverse polarity protection. If you're not hecka foolish and can put the batteries in the correct way, this shouldn't be a problem :p
Connect what points ? the arrow only points to 1 leg of the mofset ???[/quote]
where the arrow starts ::)[/quote]
Oh the pos input. Ah i c. Thanks. So i just solder a wire to the 2 points ? or can i jut put a blob of solder on it ?[/quote]
should probably just use a wire.[/quote]
are you 100% sure this method will work ? I don't wanna kill my driver or my diode. Will the diode still be safe ?
Also why when i use a 9v battery it works good, but then when the battery dies down to around 8volts the laser will no longer light a match ? so will 12v make it more powerful ?
 

billg519

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When the 9V battery dies down, the laser won't light a match because there is now insufficient voltage to supply the diode and the regulator's overhead voltage. The regulator drops out of regulation. By going to 12V, you will not make the laser more powerful, the diode will still only get 130mA from the driver. You will not have the problem of the laser going weak on you as soon as the 9V battery starts to sag. With 12V of batteries (maybe 3 x 10440 or 3 x 14500 in a radio shack battery holder, the laser will hold its power level until the batteries are exhausted and need recharging.
 




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