Title:
FULL CAPACITY DETECTION MONITOR FOR DUST COLLECTION PART
Document Type and Number:
Japanese Patent JP3188567
Kind Code:
B2
Abstract:
PURPOSE: To provide a means capable of checking the amount of dirts easily without asking a cleaning person to look back along with the suppression of production costs.
CONSTITUTION: A voltage generated of a dynamo 10 is divided to be applied to an initial stage differential amplifier 32 in a relationship of Vin, OP1 plus> Vin, OP1 minus so that the subsequent stage differential amplifier 33 is oscillated at a time constant of a capacitor C1 and a resistance R1. An LED 34 provided in a diode/bridge circuit to serve for the displaying of the presence of dirts and as an enunciation part of a dust sensor unit 30. Thus, as the amount of dirts in a dust collection bag increases, an output of the differential amplifier 32 meets the relationship of Vin, OP1 plus<Vin, OP1 minus and the differential amplifier 33 is oscillated to flash the LED 34.
Inventors:
Teruo Okauchi
Application Number:
JP25330593A
Publication Date:
July 16, 2001
Filing Date:
October 08, 1993
Export Citation:
Assignee:
Yasu Electric Co., Ltd.
International Classes:
A47L9/28; A47L9/19; (IPC1-7): A47L9/19; A47L9/28
Domestic Patent References:
| JP3186238A | ||||
| JP57187158U | ||||
| JP631847B2 | ||||
| JP417330Y1 |
Attorney, Agent or Firm:
Shigenobu Nakamura