Abstract:
The inventive concept shows the embodiment of t-switch which is a MIT 3-terminal device based on a Hole-driven MIT theory and a technology for removing an ESD noise signal which is one of applications of the t-switch. The t-switch includes three terminals of Inlet, Outlet and Control, and a metal-insulator transition (MIT) occurs at an Outlet layer by a current flowing through the Control terminal. In the t-switch, a high resistor is connected to the Control terminal and thereby an ESD noise signal of high voltage flows through the Inlet-Outlet without damaging the device.
Abstract:
The inventive concept provides MIT devices molded by clear compound epoxy and fire detecting devices including the MIT device. The fire detecting device is supplied with a power source from a power control device. The fire detecting device includes a MIT device including a MIT chip molded by a clear compound epoxy, a diode bridge circuit supplied with the power source from the power control device for providing a non-polar power source, a notice circuit supplied with the non-polar power source from the diode bridge circuit for warning of a fire alarm in response to a detecting signal from the MIT device, and a stabilization circuit for maintaining the detecting signal for a certain period.
Abstract:
Disclosed is a multipurpose alarm apparatus which includes a smoke sensing unit configured to sense a smoke using a first sensor and a second sensor, each of the first and second sensors including a temperature-sensitive smoke sensor portion disposed between a first electrode and a second electrode; a smoke level measuring unit configured to generate a smoke level measurement signal by comparing a difference between first and second smoke detection signals from the first and second sensors with a reference signal; and a sensing control unit configured to generate a fire alarm signal when the smoke level measurement signal corresponds to a fire generation condition.
Abstract:
The inventive concept shows the embodiment of t-switch which is a MIT 3-terminal device based on a Hole-driven MIT theory and a technology for removing an ESD noise signal which is one of applications of the t-switch. The t-switch includes three terminals of Inlet, Outlet and Control, and a metal-insulator transition (MIT) occurs at an Outlet layer by a current flowing through the Control terminal. In the t-switch, a high resistor is connected to the Control terminal and thereby an ESD noise signal of high voltage flows through the Inlet-Outlet without damaging the device.