My experience has been that matching voltage is more important than matching current. For example, if a device is designed to use 5VDC and 800mA, the device will work properly if I connect a 5VDC (match) and 1000mA (greater) power supply. The devices I have used will draw the current they need, which is why I am able to use a supply whose current output is greater than what the device is designed for. I try to avoid using a power supply whose voltage output is greater than what the device is designed for. I am not aware of any device that will only draw the voltage needed if too much voltage is applied.
External Power Supply Essentials
in Uncategorized
Posted
My experience has been that matching voltage is more important than matching current. For example, if a device is designed to use 5VDC and 800mA, the device will work properly if I connect a 5VDC (match) and 1000mA (greater) power supply. The devices I have used will draw the current they need, which is why I am able to use a supply whose current output is greater than what the device is designed for. I try to avoid using a power supply whose voltage output is greater than what the device is designed for. I am not aware of any device that will only draw the voltage needed if too much voltage is applied.