teardowncentral
Cheap Ebay Lithium Ion Camera Battery Charger Teardown
Teardown of a very cheap and common lithium ion charger that can be purchased on ebay from many different sellers. You can get them with different "cradles" which suits different camera batteries. This one is for NP-95 Fuji battery. Charges a single cell 3.7V battery. Voltage and current regulation is done by a Artschip MC34063 based switching regulator chip in buck step-down configuration. Constant current set by the 0.27R current sense resistor, and output is set to 4.2V. It also has a 12V input for car charging. Single sided PCB. The one i purchased had a pad cracked off a through hole capacitor, and I had to fix it before using.
Cheap Ebay Lithium Ion Camera Battery Charger Teardown
Teardown of a very cheap and common lithium ion charger that can be purchased on ebay from many different sellers. You can get them with different "cradles" which suits different camera batteries. This one is for NP-95 Fuji battery. Charges a single cell 3.7V battery. Voltage and current regulation is done by a Artschip MC34063 based switching regulator chip in buck step-down configuration. Constant current set by the 0.27R current sense resistor, and output is set to 4.2V. It also has a 12V input for car charging. Single sided PCB. The one i purchased had a pad cracked off a through hole capacitor, and I had to fix it before using.