Contactless/wireless battery charger

[trader]

wireless battery charge circuit

Can some one point me to the right direction to design the wireless battery charger? Any information relates to tranformer design, switching frequency, driving circuit etc.. for this specific application will be greatly appreciated. Thanks

 

[bobcat1]

contactless battery charger

HI

In one of the product i have design I use a wirless battery charger the charger use to charge NIMH battery pack contact less

THe idea behind the charger was simple a AC 2 DC converter (2 resistor and a diode bridge ) and high voltage power oscilator (colpitz type ) oscilate @ 50KHz on the other side ther was the 2nd half of the air gap transformer a diode bridge(1N4148) and 0.1 uF cap

the trick was to use an air gap self osillating transformer .

best


Bobi

 

[trader]

contactless nimh charger circuit

Thanks Bobi,

Do you design your own air gap transformer or is there a ready to use parts? Any more details on that would would be helpful.

 

[alphi]

design wireless battery charger”

In MARCH,I saw a news about epson's battery charger,but it have not offer switching frequency,I think it depend you systerm efficiency and transfer ranger.

 

[bobcat1]

contactless battery charger circuit

Yes we have design our own transformer !

The designed transformer should resonate at the osclliating frequency

e.g the entire design was a POWER oscilator who can operate directly from the main's 220/110 V AC .


Hope it's help


Bobi

 

[ahmed osama]

site:www.edaboard.com wireless charging

Can some one point me to the right direction to design the wireless battery charger? Any information relates to tranformer design, switching frequency, driving circuit etc.. for this specific application will be greatly appreciated. Thanks

Please what "wireless battery charger" means ??? :? :roll:

 

[Rayengine]

Can some one point me to the right direction to design the wireless battery charger? Any information relates to tranformer design, switching frequency, driving circuit etc.. for this specific application will be greatly appreciated. Thanks

Please what "wireless battery charger" means ??? :? :roll:

Usually, you see from cordless phone and mobile phone, you need direct contact to charging circuit. With magnetic coupling, the energy is through magnetic flux, so it means "wireless".