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also, my device has a different impedance when it has a different power source connected to it. (63 Ohms) is it normal for devices to have impedance that changes?
Thanks again everyone. I figured the device input impedance is about 50 ohms because it has 4.9 V and 96mA. However, the device is rated for 3.6V and 100mA. Do you think the voltage will cause any problems? I was going to add a resistor in series to reduce the voltage across the load but any...
Thanks for your help. I have the voltage working now. I tried using another cable and it worked. Now I have a problem with getting enough current. I might be able to figure out the circuit if I knew the output impedance of the usb cable and input impedance of the shaver. i was getting...
I can't get any voltage out my USB cable. I measured the voltage between the red and black wires of a USB cable while it was plugged into my laptop and the multimeter read 0 volts. When I connected these wires with a resistor it was still 0 volts. Does any one know why I'm not getting any...
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