Re: USB Data Pins
Hello Mympx partners, first !Happy birthday to these great Forum.
The IC LM78XX can supply to 1AMP what means the player can "Suck" until 1AMP from Chip but if the player only need 100mA the chip deliver 100mA to player. you need limit the current by mean of a resistance only if you will not allow the 1A to player.
There is a "Light" version of LM78XX called LM78LXX what can supply to 100mA only.
when you are charging a battery you will need "monitor" the power consumptions of player, when battery is charging they spend aprox 250 mA for a normal charge, 500 mA for a fast charge and 160 mA for a slow charge then when the consumptions drop to a fews ma (aprox 60mA) the battery is full charged and the current must be limited to aprox 10mA for a "standing" charge (supply only the current used for battery's monitor circuit) for not overcharging the battery.
regards from Colombia
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