thanks for the reply, can u give some SIMPLE Schematic with VALUE of the component so that I can make a circuit ?if the 1 amp load were constant, a 1.3 ohm resistor would work.
okay, thanks, coz I will use this as a TEST BATTERY directly to iPhone4/4s/5/etc.Won't work if the charger output is 5V; dropout voltage of the regulator is around 2V at 1A.
View attachment 90161
Measure the adapter output with a 1.5A load to see what you really have.
THANKS,We need to know more ABOUT your requirements and about the CIRCUIT.
Is THE load constant? If it is then there's no NEED for an LM317
WHAT is the load?
Use a rectifier diode, or two, to drop the output to something in the range of the battery.any solution to workout to make it 3.7VDC at .5A(500mA) ?
any CIRCUIT DIAGRAM / SCHEMATIC DIAGRAM inorder to make it and the VALUE of the component/s ?Use a rectifier diode, or two, to drop the output to something in the range of the battery.
Measure the output of your charger with no load and a 1.5A load to see if it's really 5V.any CIRCUIT DIAGRAM / SCHEMATIC DIAGRAM inorder to make it and the VALUE of the component/s ?
Measure the output of your charger with no load and a 1.5A load to see if it's really 5V.
You can use 1N4001 diodes to drop the voltage. Drop depends on current; one diode will drop the voltage around 0.8-0.9V.
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