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Battery Charger

Started by Unknown July 17, 2013
Hi, 

Need help with the following problem. What isolation should I use? 

ac to dc adapter ( 5v) -----> isolation -------> LTC 4062


LTC Data sheet: 

http://cds.linear.com/docs/en/datasheet/4062fb.pdf


AC to DC Adapter: 
http://www.digikey.com/product-detail/en/EMSA050120K-P5P-SZ/T1102-P5P-ND/2352095


melissa
On 17/07/13 22.45, walravenmelissa@gmail.com wrote:
> Hi, > > Need help with the following problem. What isolation should I use? > > ac to dc adapter ( 5v) -----> isolation -------> LTC 4062 > > > LTC Data sheet: > > http://cds.linear.com/docs/en/datasheet/4062fb.pdf > > > AC to DC Adapter: > http://www.digikey.com/product-detail/en/EMSA050120K-P5P-SZ/T1102-P5P-ND/2352095 > > > melissa
Hi Melissa Is it because you want to charge the individual cells? /Glenn
On 17/07/13 23.07, Glenn wrote:
> On 17/07/13 22.45, walravenmelissa@gmail.com wrote: >> Hi, >> >> Need help with the following problem. What isolation should I use? >> >> ac to dc adapter ( 5v) -----> isolation -------> LTC 4062 >> >> >> LTC Data sheet: >> >> http://cds.linear.com/docs/en/datasheet/4062fb.pdf >> >> >> AC to DC Adapter: >> http://www.digikey.com/product-detail/en/EMSA050120K-P5P-SZ/T1102-P5P-ND/2352095 >> >> >> >> melissa > > Hi Melissa > > Is it because you want to charge the individual cells? > > /Glenn >
If so - do you have other batterypack criterias? /Glenn
I am charging a 3.7 V 1200mAh LiIon battery. I want to isolate the AC to DC adapter because of safety issue.

melissa
On 17/07/13 23.19, walravenmelissa@gmail.com wrote:
> I am charging a 3.7 V 1200mAh LiIon battery. I want to isolate the AC to DC adapter because of safety issue. > > melissa
The ac to dc adapter should have adequate isolation. Is that not good enough? /Glenn
On Wed, 17 Jul 2013 14:19:48 -0700, walravenmelissa wrote:

> I am charging a 3.7 V 1200mAh LiIon battery. I want to isolate the AC to > DC adapter because of safety issue. > > melissa
What are you doing that you need more than the several thousands of volts of isolation provided by the charger? -- Tim Wescott Wescott Design Services http://www.wescottdesign.com
On Wed, 17 Jul 2013 13:45:14 -0700 (PDT), walravenmelissa@gmail.com
wrote:

>Hi, > >Need help with the following problem. What isolation should I use? > >ac to dc adapter ( 5v) -----> isolation -------> LTC 4062 > > >LTC Data sheet: > >http://cds.linear.com/docs/en/datasheet/4062fb.pdf > > >AC to DC Adapter: >http://www.digikey.com/product-detail/en/EMSA050120K-P5P-SZ/T1102-P5P-ND/2352095 > > >melissa
The wart looks fine. It's already isolated. -- John Larkin Highland Technology, Inc jlarkin at highlandtechnology dot com http://www.highlandtechnology.com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom laser drivers and controllers Photonics and fiberoptic TTL data links VME thermocouple, LVDT, synchro acquisition and simulation
I am trying to provide user more protection. The other thing is that its an interesting problem to solve. But I do need some direction here. 

melissa
On Wednesday, July 17, 2013 4:01:39 PM UTC-7, walrave...@gmail.com wrote:
> I am trying to provide user more protection.
More than what? There's some common test protocols, and models of human-body load, involved. If you want an UNCOMMON test or model, it'll cost ya. Easiest way to provide 'user' more protection, of course, is to use connections that the user doesn't come in contact with. My electric toothbrush charges by proximity, not an electrical contact anywhere you can see or touch.
walravenmelissa@gmail.com brought next idea :
> Hi, > > Need help with the following problem. What isolation should I use? > > ac to dc adapter ( 5v) -----> isolation -------> LTC 4062 > > > LTC Data sheet: > > http://cds.linear.com/docs/en/datasheet/4062fb.pdf > > > AC to DC Adapter: > http://www.digikey.com/product-detail/en/EMSA050120K-P5P-SZ/T1102-P5P-ND/2352095 > > > melissa
Wots your REAL problem? ;-) Or do you have so little knowledge that you cannot describe your real problem? There is no relation at all between the 2 data sheets you quote. One plugs directly into the mains and the other only uses the already isolated supply within an already certified device. :-? -- John G