Electronics > Beginners
Searching for a component that increases resistance with voltage
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grifftech:
incandecent lamp
ArthurDent:
Technically a relay that pulls in at the voltage of interest and disconnects the load across a set of N.C. contacts would work. The problem is this trip point is probably a little broad and finding a relay to match the criteria will not be easy. A series resistor, which adds a second component, could adjust it somewhat . Once the relay pulls in it will hold until the input voltage drops to a much lower value so you'd have hysteresis.
FriedMule:
First, I am a noob so please bare with me but there is an optocoupler that do the exactly opposite of what you want, but maybe you could get the optocoupler to control a digital potentymeter?

opamp here: https://www.onsemi.com/pub/Collateral/H11F3M-D.pdf
soldar:

--- Quote from: grifftech on August 30, 2019, 03:54:13 pm ---incandecent lamp
--- End quote ---

Indecent lamp can. :)
Kilrah:
Until it pops :)
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