| 摘要 |
An electrical apparatus and gaging device using same wherein an electrical input signal is improved in quality and useability to provide a precision electrical output signal through the cooperating arrangement of an amplifier, a capacitor, and a pair of charging devices, wherein the first device of the pair is operatively connected between the output terminal of the amplifier and the output connection of the capacitor and allows only negative charging of the capacitor and the second device of such pair is operatively connected between such output terminal and output connection and allows only positive charging of the capacitor. One of the devices is energized for a predetermined short time interval and the other of the devices is energized for a substantially unlimited time interval with the devices cooperating with the amplifier during the predetermined time interval causing the voltage level at the output connection to be equal in magnitude to the voltage level of the input signal to define an initial voltage condition. The other charging device then cooperates with the amplifier to change the voltage level at the output connection only in one direction from its initial condition in direct proportion to the input signal and thereby provide the precision output signal at great speed and substantially without decay. |
