ELECTRONIC DEVICE WITH ADVANCED CONTROL FEATURES
An electrostatic device, for example, an electrostatic air cleaner, may be provided with a corona discharge electrode; a collecting electrode; a power source connected to the corona discharge electrode and to the collecting electrode; an electrical parameter sensor; and a power supply system. The control system may receive a signal from the electrical sensor. The control system evaluates the electrical performance of the system and initiates appropriate or corrective action.
1 . An electrostatic device comprising:
a corona electrode array;
a second electrode array associated with said corona electrode array;
a power source connected to said corona electrode array and to said second electrode array;
an electrical sensor connected to said power source;
a power source controller connected and responsive to said electrical sensor; and
wherein said power source is connected and responsive to said power source controller and wherein said power source controller operates in at least two modes.
2 . An electrostatic device according to claim 1 wherein said power source controller operates in at least three modes.
3 . An electrostatic device according to claim 1 wherein said power source controller further comprises a memory containing data corresponding to an electrical measurement by said electrical sensor and a processor connected to said memory that analyzes said data corresponding to said electrical measurement and controls said power source in response to analysis of said data.
4 . An electrostatic device according to claim 3 wherein said power source controller executes a first mode control of said power source upon detecting a power condition representing a spark or pre-spark condition.
5 . An electrostatic device according to claim 4 wherein said first mode of control substantially decreases voltage applied to said electrodes and after a delay substantially increases said voltage applied to said electrodes.
6 . An electrostatic device according to claim 5 wherein said power source controller executes a second mode control of said power source upon detecting a change in power indicative of a change in environmental or operational conditions.
7 . An electrostatic device according to claim 6 wherein said second mode control of said power source adjusts an operational level of said power source to compensate for said change in environmental or operational conditions.
8 . An electrostatic device according to claim 7 wherein said power source controller executes a third mode in response to a change in said data indicative of a maintenance condition of said electrostatic device.
9 . An electrostatic device according to claim 8 wherein said third mode comprises issuing a maintenance signal.
10 . An electrostatic device according to claim 1 wherein said electrostatic device is an electrostatic air cleaner and wherein said second electrode array is a collecting electrode array.