Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1990-05-24
1992-03-24
Zazworsky, John
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307253, 3072961, 307359, 307490, H03K 3023, H03K 500
Patent
active
050991396
ABSTRACT:
A voltage-current converting circuit having an output switching function, comprises an operational amplifier having a non-inverting input connected to an input terminal, a resistor having one end connected to a reference potential line and the other end connected to an inverting input of the operational amplifier, first and second PNP transistors having commonly connected emitters connected to the inverting input of the operational amplifier, and an electronic switch for alternatively connecting an output of the operational amplifier to either a base of the first transistor or a base of the second transistor. With this arrangement, a current output is supplied from a collector of the transistor receiving the output of the operational amplifier through the electronic switch.
REFERENCES:
patent: 3870906 (1975-03-01), Hughes
patent: 3902806 (1975-09-01), Bober
patent: 4302726 (1981-11-01), Shobbrook
patent: 4550262 (1985-10-01), Kohsiek
patent: 4864216 (1989-09-01), Kalata et al.
patent: 4893252 (1990-01-01), Blumel
NEC Corporation
Zazworsky John
LandOfFree
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