| 摘要 |
Apparatus for remotely adjusting reference indicia of display instruments such as flight instruments wherein a knob affixed to the shaft of a d.c. generator, remotely disposed from the flight instrument produces a d.c. signal, the magnitude and polarity of which are dependent on the speed and direction, respectively, of rotation of the knob. The d.c. signal is coupled to a d.c. motor mechanically connected to said flight instrument reference indicia and adjusts the same accordingly. The apparatus further includes circuitry, electrically connected between the d.c. generator and the d.c. motor for producing compensating voltages equal to the start-up voltages of the d.c. motor, which when added to the d.c. signal insure a continuous response by the d.c. motor to the d.c. signal, and also for isolating the output impedance of the d.c. generator from the d.c. motor.
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