PHR w/Micro Boost Drive V1 cutting out.

[chipdouglas]

i believe most ppl are using 3 volts

 

[awlego]

So I replaced the batteries again and it works perfectly. Thanks for the advice Dave! I'm glad I tried again before taking it apart. It makes sense because it had been working for several hours of burn time before.

Thanks all for the concern and the help.

Dave - any idea why it was cutting out with the half dead batteries? They had plenty of volts to run the driver and the driver could easily boost it to the necessary voltage and 135mA to run the PHR... maybe even though the voltage was fine the batteries just didn't have the amps left in them. Anyways, thanks again for the advice

-Awlego

 

[chipdouglas]

when you are checking the batteries you are checking for voltage. almost dead batteries can still read a high voltage under no load. but the said battery would not have sufficient current. and i don't know the minimum current threshold but every laser diode has one. lets say 50ma. so your batts could read a voltage that appears to be good but when you put load on them it will power the laser for a second or two and then go led.

michael

 

[daguin]

So I replaced the batteries again and it works perfectly. Thanks for the advice Dave! I'm glad I tried again before taking it apart. It makes sense because it had been working for several hours of burn time before.
Thanks all for the concern and the help.
Dave - any idea why it was cutting out with the half dead batteries? They had plenty of volts to run the driver and the driver could easily boost it to the necessary voltage and 135mA to run the PHR... maybe even though the voltage was fine the batteries just didn't have the amps left in them. Anyways, thanks again for the advice
-Awlego

Sweet!

Trust me. I learned the hard way that "new" didn't always mean "good."

All it takes is one bad cell in the group to cut the current down to below threshold.

Peace,
dave

 

[bloompyle]

i believe most ppl are using 3 volts

I thought that was for the flexdrives because they have no voltage dropout? Well...w/e I guess I'll have to find something to host this WITH 2 batteries. Maybe find a pen style 5mw for super cheap, then replace the diode?

 

[daguin]

I thought that was for the flexdrives because they have no voltage dropout? Well...w/e I guess I'll have to find something to host this WITH 2 batteries. Maybe find a pen style 5mw for super cheap, then replace the diode?

The Micro-Boost driver uses from 2.7V-5.5V. Any voltage between those two limits will work.

The Micro-Flex driver can use between 2.0V-5.5V

If you are actually thinking of the Groove2 driver or the Rkcstr driver you will need more voltage

Peace,
dave