Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1990-03-15
1991-08-20
James, Andrew J.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
357 2311, 357 34, 357 51, 307542, 361 91, H01L 2702
Patent
active
050418890
ABSTRACT:
A monolithically integratable transistor circuit for limiting transient positive high voltages on an electric conductor includes a pnp transistor being conductive only upon exceeding a predetermined potential threshold value being positive as compared with a reference potential. The pnp transistor has an emitter terminal connected to an electric conductor, a collector terminal connected to the reference potential, and a base terminal. A parallel circuit is connected between the base terminal and the electric conductor. The parallel circuit has a high-impedance resistor and a first capacitor. A second capacitor is connected between the base terminal and the reference potential.
REFERENCES:
patent: 3270289 (1966-08-01), Citrin
patent: 4271445 (1981-06-01), Hartman et al.
patent: 4302792 (1981-01-01), Harwood
patent: 4631567 (1986-12-01), Kokado et al.
IBM Technical Disclosure Bulletin 30 (1988) Jan., No. 8, NY, U.S.A., vol. 30 "Cascaded Electrostatic Discharge Protection Structure", pp. 389, 390.
Kriedt Hans
Zietemann Heinz
Greenberg Laurence A.
James Andrew J.
Lerner Herbert L.
Ngo Ngan Van
Siemens Aktiengesellschaft
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