| 摘要 |
A peak detector circuit includes a switch for charging and discharging a capacitor at predetermined rates. In a first mode of operation, the switch is open and the peak detector functions to provide an output voltage that is indicative of the peak voltage level occurring at its input by charging a capacitor at a first predetermined rate. In a second mode of operation, the switch is closed and the peak detector functions to discharge the capacitor at a second predetermined rate and to a predetermined voltage. Subsequently in the second mode of operation, the peak detector then functions to provide an output voltage that follows its input voltage.
|
