Communications: electrical – Continuously variable indicating – With meter reading
Patent
1997-03-28
1999-02-09
Horabik, Michael
Communications: electrical
Continuously variable indicating
With meter reading
340826, 340827, 3408258, 327107, 327104, G05B 2302, H04B 338, H03B 2100
Patent
active
058700285
ABSTRACT:
An input expansion for a crosspoint switch module incorporates a plurality of crosspoint switch ICs within the switch module so that the crosspoint switch module may receive a plurality of input differential signals. The crosspoint switch module includes a module driver circuit which, when enabled by a module enable signal, couples a differential current signal to an output. Each crosspoint switch includes an emitter follower configured transistor circuit for receiving one of the input differential signals and providing an output differential signal and a switch transistor circuit configured as a saturated switch for receiving the output differential signal and providing the differential current signal when enabled by a switch enable signal. Only one of the crosspoint switches is enabled at a time so that only one of the crosspoint switches carries current.
REFERENCES:
patent: 4591740 (1986-05-01), Anderson et al.
patent: 4748346 (1988-05-01), Emori
patent: 4870301 (1989-09-01), Petty
patent: 4912348 (1990-03-01), Maki et al.
patent: 5289048 (1994-02-01), Ishihara et al.
patent: 5331206 (1994-07-01), Liron
patent: 5465056 (1995-11-01), Hsieh et al.
Asongwed Anthony A.
Gray Francis I.
Horabik Michael
Tektronix Inc.
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