| 摘要 |
<p>A DECOUPLING CAPACITOR (102) FOR AN INTEGRATED CIRCUIT IS OPERATIVELY COUPLED TO A SUPPLY (101) AND TO CONTROL CIRCUITRY FOR ISOLATING THE CAPACITOR. THE CONTROL CIRCUITRY AUTOMATICALLY ISOLATES THE CAPACITOR IN RESPONSE TO A CURRENT THROUGH THE CAPACITOR EXCEEDING A CERTAIN THRESHOLD, BUT TENDS TO RESTORE THE CAPACITOR TO OPERATION IF THE CURRENT IS MERELY CAUSED BY MOMENTARY CONDITIONS, RATHER THAN SUBSTANTIAL FAILURE OF THE CAPACITOR. THE CONTROL CIRCUITRY INCLUDES A FIRST CONTROL DEVICE (108) FOR AUTOMATICALLY SWITCHING TO AN OFF STATE TO ISOLATE THE CAPACITOR IN RESPONSE TO A VOLTAGE PRODUCED BY THE CURRENT EXCEEDING A CERTAIN THRESHOLD. A DISCHARGING DEVICE TENDS TO DISCHARGE THE VOLTAGE AND AUTOMATICALLY TURN ON THE FIRST DEVICE WHEN THE CURRENT IS CAUSED BY MOMENTARY CONDITIONS. THE DISCHARGING DEVICE MAY INCLUDE A CONTROL DEVICE (122) RESPONSIVE TO AN EXTERNAL CONTROL SIGNAL FOR SWITCHING THE FIRST CONTROL DEVICE ON AND OFF.</p> |
