Control device for an electrostatic dust separator

Details Control device for an electrostatic dust separator Control device for an electrostatic dust separator

1982-07-15

1984-12-04

Shoop, William M.

Electricity: power supply or regulation systems

Output level responsive

Phase controlled switching using electronic tube or a three...

55105, 55139, 323903, B03C 368

Patent

active

044867042

ABSTRACT:
A control device for an electrostatic dust separator (10,11) intended to control in relation to the recorded level of direct current (104) and direct current voltage (102) in the dust separator and with the help of the supply voltage (6a) passes through the zero point the switching in and/or out of the rectifiers (8, 8a) wired into the power supply lead (6a) to the dust separator, usually in the form of two thryistors. The recorded value for the current (104) and the recorded value for the voltage (102) together with the information in respect of the passage through zero of the supply voltage (100) are connected directly via conversion circuits (25, 26) to a data processing unit (112). This (112) is so arranged that in relation to the value (102, 104) of the actual direct current and direct current voltage in the dust separator and with reference to the passages through zero (100) it will on the one hand calculate a specific time interval for the switching in and/or switching out of the rectifier (8) from the power supply and on the other hand generate switching-in and switching-out pulses (112a, 112b). These switching-in and switching-out pulses are fed directly, via adapter circuits, from the data processing unit.

REFERENCES:
patent: 2724086 (1955-11-01), Lindberg
patent: 2978065 (1961-04-01), Berg
patent: 3507096 (1970-04-01), Hall et al.
patent: 4290003 (1981-09-01), Lanese
patent: 4390831 (1983-06-01), Byrd et al.

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