摘要:
According to one embodiment, a switch includes a first element (1) with a first withstand voltage having, a second element (3) whose withstand voltage is lower than the first withstand voltage, a diode (4) which is connected between a positive electrode of the first element (1) and a positive electrode of the second element (3) and which has a withstand voltage equal to the first withstand voltage, a negative electrode of the first element (1) and a negative electrode of the second element (3) being connected to each other, and a circuit (5) connected in a direction in which a positive voltage is applied to the positive electrode of the first element (1) and generating at least a voltage pulse lower than the first withstand voltage and outputs the voltage pulse in synchronization with the time when first element (1) goes off.
摘要:
PROBLEM TO BE SOLVED: To provide a switch and a method of operating the switch which enhance performance of devices, especially their cyclability.SOLUTION: An electrically actuated switch 100' comprises a first electrode 102, a second electrode 104, and an active region 306 disposed between the electrodes. The active region comprises at least one primary active region 308 comprising at least one material that can be doped or undoped to change its electrical conductivity, and a secondary active region 310 comprising at least one material for providing a source/sink of ionic species that act as dopants for the primary active region(s).
摘要:
PROBLEM TO BE SOLVED: To provide a semiconductor switch capable of preventing increase in output electrostatic capacitance of a main element and capable of suppressing turn-on loss which is caused by a junction capacity charge current.SOLUTION: The semiconductor switch includes a main element 1 which is a voltage drive type switching element of high voltage resistance and has a reverse conduction performance, a backflow prevention element 3 whose voltage resistance is lower than the main element 1, a high speed reflux diode 4 having a voltage resistance equivalent to the main element 1 in which a negative electrode of the main element 1 is connected to a negative electrode of the backflow prevention element 3, with a positive electrode of the main element 1 as a positive electrode terminal while a positive electrode of the backflow prevention element 3 as a negative electrode terminal, and which is connected between the positive electrode terminal and the negative electrode terminal in such a manner as forward direction runs from the negative electrode terminal to the positive electrode terminal, and a preliminary voltage application circuit 5 which is connected in a direction in which a positive voltage is applied to the positive electrode of the main element 1, to generate a voltage pulse lower than at least the voltage resistance of the main element 1 and output a voltage pulse in synchronous with the timing at which the main element 1 or the backflow prevention element 3 is turned off.
摘要:
PROBLEM TO BE SOLVED: To provide a data multiplex transmission system capable of transmitting a plurality of digital signals having different frequency information at high speed regardless of their data contents, and capable of reproducing and separating the plurality of digital signals with keeping each of the frequency information at reception side.SOLUTION: A transmitter divides transmission data, associated with each of input channels having different frequency information, into data blocks each of which has fixed length as effective data, then multiplexes the plurality of data blocks, associated with the plurality of input channels, and outputs them on a transmission channel. Meanwhile, a receiver separates a data sequence received through the transmission channel into data flows with the same number of the input channels at transmitter side, then reproduces and stores effective transmission data from consecutive data blocks in each data flow, and outputs transmission data associated with each data flow synchronously to clock generated for each data flow.
摘要:
PROBLEM TO BE SOLVED: To prevent an excessive current from flowing through a protection device, and also to prevent latch-up. SOLUTION: A surge protection circuit includes a surge detection circuit 14 for detecting a surge applied to a semiconductor integrated circuit, and the protection device 15 for absorbing the surge. The protection device is arranged between a signal terminal for inputting a signal to the semiconductor integrated circuit and a power source terminal for supplying a power source voltage. When the surge detection circuit does not detect any surge while the power source voltage is not larger than a voltage enough to normally operate the semiconductor integrated circuit, the protection device is set in a current limiting state, and when the surge detection circuit detects a surge while the power source voltage is not larger than a voltage enough to normally operate the semiconductor integrated circuit, the protection device is set in a current non-limiting state. COPYRIGHT: (C)2010,JPO&INPIT