On Sun, 12 Nov 2017 16:44:12 -0500, rickman wrote:
John Robertson wrote on 11/12/2017 4:24 PM:
On 2017/11/12 12:47 AM, wrote:
What is the color code for a -10 ohm resistor.
That's a NEGATIVE 10 ohm resistor, not a standard (positive) 10 ohm
brown-black-black resistor. (Thats 10 ohms below zero ohms).
Isn't negative resistance a battery? After all one can measure the ESR of
batteries...
That's still a positive resistance just like a resistor you add to the
circuit. The only negative resistance I know of is in certain semiconductor
devices and only applies over a limited range of voltage and current.
That would only be a negative incremental resistance. A negative
resistor can't be a passive device. Power has to be added to get a
true negative resistance. Line amplifier are an example of negative
resistors.