External power
Attention: This article is for people who understand what they do. You can damage reader and memory chip with wrong actions!
Adapter modification
Find two pin connector and jumper
Drill holes for it in pcb (d=1mm)
Remove trace between holes
Remove varnish from traces by sides
Put connector in holes
And bend his legs
Solder legs to traces
Attention: Do not put solder on gold adapter contacts. You can lost your adapter at this step
To use reader power, put jumper on connector
To use external power, remove jumper
Using external power
Solder power wires to capacitor
3.3V is near white line on capacitor
Remove jumper
Attach adapter to external power source
Memory chip supply current usualy about 10mA (0.01A) or less
If current is much bigger, immediately turn power off
Attention: Safe voltage range for reader is 2.4 .. 3.3V
