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Class Information
Number: 327/582
Name: Miscellaneous active electrical nonlinear devices, circuits, and systems > Specific identifiable device, circuit, or system > Utilizing a three or more electrode solid-state device > Four or more layer device (e.g., silicon-controlled rectifier, etc.)
Description: Subject matter including a semiconductor device with four or more alternating layers having different conductivities, for example a pnpn device.










Patents under this class:
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Patent Number Title Of Patent Date Issued
7512177 Method and apparatus for generating random jitter Mar. 31, 2009
RE38734 Semiconductor switching apparatus and method of controlling a semiconductor switching element May. 17, 2005
5850160 Gate drive circuit for an SCR Dec. 15, 1998
5777506 Semiconductor switching apparatus and method of controlling a semiconductor switching element Jul. 7, 1998
5576557 Complementary LVTSCR ESD protection circuit for sub-micron CMOS integrated circuits Nov. 19, 1996
5561393 Control device of semiconductor power device Oct. 1, 1996
5546038 SCR inductor transient clamp Aug. 13, 1996
5504449 Power driver circuit Apr. 2, 1996
5361009 Thyristor controller Nov. 1, 1994
4977438 Turn-off semiconductor component and use thereof Dec. 11, 1990
4945393 Floating gate memory circuit and apparatus Jul. 31, 1990
4897706 Thyristor protected against breakover firing Jan. 30, 1990
4792767 Phase and frequency detector and use of this detector in a phase-lock loop Dec. 20, 1988
4743950 Thyristor with switchable emitter short circuit May. 10, 1988
4686452 Reference-voltage source for replicating a terminal voltage of a saturated transistor Aug. 11, 1987
4678932 Snubber circuit for GTO thyristor Jul. 7, 1987
4659979 High voltage current source circuit and method Apr. 21, 1987
4626703 Thyristor with connectible current sources and method for operating same Dec. 2, 1986
4612449 Thyristor having a secondary emitter electrode and a method for operating the same Sep. 16, 1986
4612561 Parallel-connected gate turn-off thyristors Sep. 16, 1986
4599633 Integrated self-firing amplified thyristor structure for on/off switching of high currents and control circuit thereof Jul. 8, 1986
4529998 Amplified gate thyristor with non-latching amplified control transistors across base layers Jul. 16, 1985
4509089 Two-pole overcurrent protection device Apr. 2, 1985
4486768 Amplified gate turn-off thyristor Dec. 4, 1984
4482911 Monolithic integrated circuit equivalent to a transistor associated with three antisaturation diodes Nov. 13, 1984
4464673 Semiconductor component Aug. 7, 1984
4419683 Thyristor having a controllable emitter short circuit Dec. 6, 1983
4398205 Gate turn-off device with high turn-off gain Aug. 9, 1983
4393337 Switching circuit Jul. 12, 1983
4392069 Semiconductor switch Jul. 5, 1983
4386283 Process for the cutting-off of a thyristor May. 31, 1983
4355322 Integrated gate turn-off device having a vertical power transistor forming a regenerative loop with a lateral transistor Oct. 19, 1982
4338617 Four terminal GTO thyristor with transistor controlled turn-off Jul. 6, 1982
4320735 High-frequency continuous-wave ignition system Mar. 23, 1982
4315274 Thyristor with switchable capacitor between auxiliary thyristor cathode and main thyristor gate regions Feb. 9, 1982
4239985 Trigger circuit for a thyristor Dec. 16, 1980
4232234 Semiconductor switch circuit Nov. 4, 1980
4223331 Thyristor with two control terminals and control device Sep. 16, 1980
4217618 Thyristor firing circuit module with integral optical isolation, dv/dt limitation, and bidirectional voltage transient suppression Aug. 12, 1980
4212024 Solid-state switching circuit employing photon coupling suitable for construction in form of integrated circuit Jul. 8, 1980
4190853 Multilayer semiconductor switching devices Feb. 26, 1980
4181975 Digital delay line apparatus Jan. 1, 1980
4163241 Multiple emitter and normal gate semiconductor switch Jul. 31, 1979
4109632 GTO Ignition circuit Aug. 29, 1978
4107551 Thyristor turn-off system Aug. 15, 1978
4081821 Bistable semiconductor component for high frequencies having four zones of alternating opposed types of conductivity Mar. 28, 1978
4080538 Method of controlling switching of PNPN semiconductor switching device Mar. 21, 1978
4058741 Semiconductor switch circuit Nov. 15, 1977
4050083 Integrated thermally sensitive power switching semiconductor device, including a thermally self-protected version Sep. 20, 1977
4039863 Light activated semiconductor switch device Aug. 2, 1977

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