| 摘要 |
The disclosed deviation driver circuit is capable of producing a difference voltage having a magnitude related to the voltage of a deviation signal provided to the circuit from an external source. The deviation driver circuit of the present invention is comprised of a differential amplifier with negative feedback. This differential amplifier includes a pair of transistors and a plurality of load resistors which are arranged to form a balanced bridged network. Since one input of the differential amplifier is electrically connected to ground, this amplifier generates a difference voltage having a magnitude related to the voltage of the signal provided to the active input of the amplifier. The feedback loop, on the other hand, includes another differential amplifier which is interconnected with the first mentioned differential amplifier to produce a feedback signal having a voltage level related to the magnitude of the difference voltage produced by the first mentioned differential amplifier. The feedback loop also includes a multiple input integrator which is capable of summing the deviation signal and the feedback signal and of integrating the resulting summation signal. The output of the multiple input integrator is electrically coupled with the active input of the first mentioned differential amplifier to close the feedback loop.
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