Driver issue! help please

Seoul_lasers · May 25, 2010

Ok, well I made my red 300mW micro labby like the ones displayed here and I am powering it up with a 18650 cell. I have a key lock and switch, and all was working fine up until today when the driver suddenly died.
Seems like the driver quit working. Diode works. diodes on board are reg open circuit. huh..

Can anyone recognize the driver? Don't know.

This is the second time I have had this kind of driver crap out on me. What is going on. These are rated for up to 6v in. I am using a protected Samsung 18650 cell.

Pictures of the board are here

Flickr: seoul_lasers' Photostream

daguin · May 25, 2010

Get one of the drivers from people here, (Rkcstr, Flexdrive, Groove2). Your driver looks like one of the ones used for pump diodes. If so, it is not designed to be used with a 3V diode (the red).

Or build your own DDL type driver

Peace,
dave

Seoul_lasers · May 25, 2010

Just to be clear, what makes you think it's a pump diode driver? I am dealing with the seller over this problem.
Seller says driver is fine up to 5.0 volts. ????

TTerbo · May 25, 2010

did it overheat? that hapened to my crappy cheapo ebay driver last night. if the driver runs for more than like 30 seconds without sufficient cooling the driver can get really hot and fry the transister.
cheers

Seoul_lasers · May 25, 2010

TTerbo said:
did it overheat? that hapened to my crappy cheapo ebay driver last night. if the driver runs for more than like 30 seconds without sufficient cooling the driver can get really hot and fry the transister.
cheers

This is supposed to be run without a heat sink. It is microdrive, like the RKCstar and flex v5, only now I am being told it is for IR, by danguin.

daguin · May 26, 2010

Seoul_lasers said:
Just to be clear, what makes you think it's a pump diode driver? I am dealing with the seller over this problem.
Seller says driver is fine up to 5.0 volts. ????

5V in or out?

If you have had two fail, there is a problem.

Do you have a tech sheet?

Peace,
dave

TTerbo · May 26, 2010

well idk. my rkcstr got really hot and dies whilst testing on a test load?? there were no shorts or bad connections. (im definatly not blaming the product ) i must just lack some skill.
cheeers

Seoul_lasers · May 27, 2010

daguin said:
5V in or out?

If you have had two fail, there is a problem.

Do you have a tech sheet?

Peace,
dave

The seller claimed 5v input, clearly as you say it can't handle the voltage!
You're right the driver looks to be one from an IR pump diode. I saw a picture from
O-likes modules and it looks nearly identical.

Benm · May 27, 2010

I'd need better shots of the driver pcb to tell more, both if those diodes are in the main current path, i'm not surprised if they died. They look like 1n4148-like smd types, typically rated for 75 mA. Then again they might just provide a reference voltage - which is more logical since the voltage drop would otherwise be too large - but that would make me curious as to what killed them.

Seoul_lasers · May 27, 2010

Benm said:
I'd need better shots of the driver pcb to tell more, both if those diodes are in the main current path, i'm not surprised if they died. They look like 1n4148-like smd types, typically rated for 75 mA. Then again they might just provide a reference voltage - which is more logical since the voltage drop would otherwise be too large - but that would make me curious as to what killed them.

Well, I sent the driver and module back to the seller. I asked the seller a couple times to send a circuit diagram, I got no response.

I am going to cross this vendor off my list. Not satisfied that his units are up to spec. The reds seem to be ok and the blu-rays are within spec but the guy seems to be using crap drivers.

Driver issue! help please

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