Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1991-02-11
1992-02-11
LaRoche, Eugene R.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307270, 307491, 307542, 307263, H03K 1756, H03K 301
Patent
active
050878271
ABSTRACT:
An improved variable voltage transition circuit of the type that switches a capacitor between charging and discharging current sources when an input voltage transitions, the capacitor being coupled via respective Schottky diodes to tracking clamp circuits, has a compensation circuit that includes second current sources that match the charging and discharging current sources and uses regenerative feedback to turn on and off the Schottky diodes virtually instantaneously when the input voltage transitions. A fixed clamp circuit and a bias switch circuit are coupled between the tracking clamp circuits and one side of the transition switch to provide a conductive path for the second current sources that results in a change in the bias of the tracking clamp circuits such that when the input voltage transitions the "on" Schottky diode is instantaneously turned off, and the "off" Schottky diode is turned completely on very quickly after it starts to conduct at the end of the transition.
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Dinh Son
Gray Francis I.
LaRoche Eugene R.
Tektronix Inc.
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