| 摘要 |
A circuit for pneumatic controllers, a proportional-action range of which is adjustable, with the circuit including at least one differential amplifier having input pressure chambers being exposed to pressures derived between two throttle resistors respectively inserted in the measured value X input line and the desired value W-input line. All of the resistors are constant and a connecting line is interposed between connecting sections of the resistors, with the connecting line being provided with an adjustable throttle resistor.
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