threshold switch

threshold switch

[′thresh‚hōld ‚swich]
(electronics)
A voltage-sensitive alternating-current switch made from a semiconductor material deposited on a metal substrate; when the alternating-current voltage acting on the switch is increased above the threshold value, the number of free carriers present in the semiconductor material increases suddenly, and the switch changes from a high resistance of about 10 megohms to a low resistance of less than 1 ohm; in other versions of this switch, the threshold voltage is controlled by heat, pressure, light, or moisture.
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References in periodicals archive ?
The high sensitivity of both switches means weaker magnets can be employed or detection distances extended; the switches typical operating threshold switch point is A35G.
United States : Micropower Hall Switches from Diodes Incorporated Raise Detection Circuit Performance
The companies are calling the thin film selector an Ovonic Threshold Switch (OTS), which acts like a resister between the stacked layers of PCM chips.
Intel, Numonyx create breakthrough in phase-change memory
ECD Ovonics' proprietary advanced information technologies include Ovonic phase-change electrical memory, Ovonic phase-change optical memory and the Ovonic Threshold Switch.
Ovonic Battery Co. Licenses Proprietary NiMH Battery Technology to China's TMK Power Industries
ECD Ovonics' proprietary advanced information technologies include Ovonic(TM) phase-change electrical memory, Ovonic(TM) phase-change optical memory, and the Ovonic(TM) Threshold Switch.
TOHS DEMONSTRATES SAFE HYDROGEN STORAGE IN VEHICLES

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