Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

LPF Donation via Stripe | LPF Donation - Other Methods

Links below open in new window

ArcticMyst Security by Avery

V5 Flexdrive cutoff voltage

mfo

0
Joined
Jul 3, 2009
Messages
3,394
Points
0
The cut off voltage for a v5 flexdrive is 2 volts, right? If I add a diode in series with the driver, then technically the cut off voltage will be 2.7 volts, right?

Reason I ask is because I'm using a CR2 host, and CR2's are not protected. If I make the cut off voltage 2.7 volts instead of 2 volts, then I shouldn't have to worry about over discharge, correct? Thanks.
 





daguin

0
Joined
Mar 29, 2008
Messages
15,989
Points
113
The diode doesn't change the driver, just what is coming into the driver.

Peace,
dave
 

mfo

0
Joined
Jul 3, 2009
Messages
3,394
Points
0
I should have been more clear :p

If a battery sags down to 2.7 volts, and I have a diode between the battery and that driver, then the driver will cut off right?
 
Joined
Jan 7, 2007
Messages
6,309
Points
83
mfo ---
You may need to direct this question directly to DrLava but IIRC, the V5 has a reverse polarity protection built in which may give you that extra 0.7 volt edge. If the circuit uses Shottke diodes, then some battery protection may be provided.

HMike
 

drlava

0
Joined
Mar 7, 2007
Messages
1,152
Points
0
Hi mfo, the reverse polarity protection on the FlexDrive is highly efficient - it presents almost no additional voltage drop to the driver. If you are using an unprotected cell, yes your series diode solution should perform as expected.
 
  • Like
Reactions: mfo

mfo

0
Joined
Jul 3, 2009
Messages
3,394
Points
0
Hi mfo, the reverse polarity protection on the FlexDrive is highly efficient - it presents almost no additional voltage drop to the driver. If you are using an unprotected cell, yes your series diode solution should perform as expected.

Thanks Dr. Lava! +1
 




Top