Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1980-05-15
1982-08-17
Clawson, Jr., Joseph E.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307252C, 307305, 307318, 307566, 357 38, H03K 1760
Patent
active
043451632
ABSTRACT:
To switch a first gated diode switch (GDS1) to the "OFF" state requires a voltage applied to the gate which is more positive than that of the anode or cathode and a sourcing of current into the gate of substantially the same order of magnitude as flows between the anode and cathode of the first switch. Control circuitry, which uses a second gated diode switch (GDSC) coupled by the cathode to the gate of the first switch (GDS1), is used to control the state of the first switch (GDS1). The control circuitry comprises a first branch circuit coupled to the gate of GDSC and to a first potential source +V1, a second branch circuit coupled to the anode of GDSC and to a second potential source +V2, and a third branch circuit coupled to the anode of GDSC and to a third potential source +V3. The first branch circuit is connected to the gate of the second switch (GDSC) and controls the state thereof. The second branch circuit maintains the state of the load switch (GDS1) and is adapted to supply up to a preselected maximum amount of current into the anode of GDSC and then to automatically reduce the amount of supplied current substantially. The third branch circuit is used to provide a surge of current during a current break operation to turn GDS1 to an OFF state.
REFERENCES:
patent: 4250409 (1981-02-01), Davis et al.
Davis James A.
MacPherson William F.
Mussman Harry E.
Shackle Peter W.
Bell Telephone Laboratories Incorporated
Clawson Jr. Joseph E.
Ostroff Irwin
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