Old 02-20-2017, 09:08 PM #33
BobMc's Avatar
Class 2M Laser
 
Join Date: Apr 2016
Location: Lancaster ca
Posts: 977
Rep Power: 4445
BobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond repute
BobMc BobMc is online now
Class 2M Laser
BobMc's Avatar
 
Join Date: Apr 2016
Location: Lancaster ca
Posts: 977
Rep Power: 4445
BobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond repute
Default Re: Sanwu Blue Laser - Silver Series Batteries?

Quote:
Originally Posted by Peabody View Post
Thanks Bob, got it!
Your welcome


__________________
My collection,adding to👍
BobMc is online now   Reply With Quote








Old 02-21-2017, 12:26 AM #34
WizardG's Avatar
Class 2 Laser
 
Join Date: May 2011
Location: Oregon
Posts: 369
Rep Power: 1373
WizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond repute
WizardG WizardG is online now
Class 2 Laser
WizardG's Avatar
 
Join Date: May 2011
Location: Oregon
Posts: 369
Rep Power: 1373
WizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond repute
Default Re: Sanwu Blue Laser - Silver Series Batteries?

The `protection' in the batteries is to protect the batteries. If you drain a lithium ion cell all the way flat it can never be recharged. The protection circuit, for all intents and purposes, turns the battery 'off' if its voltage drops below a setpoint that's usually between 2.5 and 3 volts. Discharge to any lower voltage causes permanent damage to the battery.

But you're not entirely wrong about the driver issue. Low voltage input to a boost type switching regulator can get those hotter than usual as the transistor(s) responsible need to switch higher current through the commutating inductor to maintain a constant output.

The diodes themselves have no issue at all with being underdriven.

Quote:
Originally Posted by BobMc View Post
As far as I know laser diodes are like transistors ( active components not passive ) when you underdrive them they create more heat which in turn cuts the their life expectancy down, or in other words strain the component. Could be wrong, somebody correct me if I am. edit~~~~ you know thinking about this, it just might be the driver that gets undriven??? Curious, have to check on this ???
__________________
125mW 405
1.157 watt 447
2 meter long hene @ 57mW
Assorted greenies, best @ 244mW of 520
WizardG is online now   Reply With Quote
Old 02-21-2017, 12:34 AM #35
BobMc's Avatar
Class 2M Laser
 
Join Date: Apr 2016
Location: Lancaster ca
Posts: 977
Rep Power: 4445
BobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond repute
BobMc BobMc is online now
Class 2M Laser
BobMc's Avatar
 
Join Date: Apr 2016
Location: Lancaster ca
Posts: 977
Rep Power: 4445
BobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond repute
Default Re: Sanwu Blue Laser - Silver Series Batteries?

Quote:
Originally Posted by WizardG View Post
The `protection' in the batteries is to protect the batteries. If you drain a lithium ion cell all the way flat it can never be recharged. The protection circuit, for all intents and purposes, turns the battery 'off' if its voltage drops below a setpoint that's usually between 2.5 and 3 volts. Discharge to any lower voltage causes permanent damage to the battery.

But you're not entirely wrong about the driver issue. Low voltage input to a boost type switching regulator can get those hotter than usual as the transistor(s) responsible need to switch higher current through the commutating inductor to maintain a constant output.

The diodes themselves have no issue at all with being underdriven.
I was thinking I overstep the line with the diode being an active component. Thanks for the input, it's always nice to learn something new.
__________________
My collection,adding to👍
BobMc is online now   Reply With Quote
Reply

Tags
battery, charge, podo, protect, sanwu





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading








Top 50 Laser Pointer Companies - Green Lasers Top 50 Laser Pointer Companies - Blue Lasers Top 50 Laser Pointer Companies - Red Lasers
Top 50 Laser Pointer Companies - Yellow Lasers Top 50 Laser Pointer Companies - Purple Lasers Top 50 Laser Pointer Companies - Orange Lasers
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes




Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 03:36 PM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC