Power supply for electrostatic air cleaner

Patent · Tue Mar 31 00:00:00 EST 1987

OSTI ID:6366195

Thorne, R L

This patent describes a power supply for energizing an electrostatic air cleaner cell, a unidirectional voltage source; a transformer having a primary winding, a secondary winding, and a feedback winding, one end of the primary winding being connected to one side of the voltage source; a transistor having its collector connected to the other end of the primary winding and its emitter connected to the other side of the voltage source, the transistor being adapted to be repetitively rendered conductive and non-conductive; voltage multiplying means connected to the secondary winding and responsive to the alternating voltage induced into the secondary winding. First circuit means connects one end of the feedback winding to the one side of the voltage source. Second circuit means, in series with the first circuit means connect the one end of the feedback winding to the other side of the voltage source. Third circuit means connect the other end of the feedback winding to the base of the transistor. Fourth circuit means connect the other end of the feedback winding to the emitter of the transistor. First circuit means including resistance means for enabling current flow through the base-emitter circuit of the transistor to initiate conduction of the transistor, second circuit means including a capacitor and a rectifier connected in parallel to permit current flow during both polarities of the alternating voltage induced in the feedback winding. Third circuit means includes adjustable resistance means for establishing a desired biasing of the transistor, fourth circuit means including voltage regulator means for limiting the biasing of the transistor.

• Assignee: Fyrnetics, Inc., Elgin, IL
• Patent Number(s): US 4654772
• OSTI ID: 6366195
• Resource Relation: Patent File Date: Filed date 6 Mar 1986
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
AIR FILTERS
POWER SUPPLIES
ELECTROSTATIC PRECIPITATORS
AIR POLLUTION CONTROL
ALTERNATING CURRENT
DIRECT CURRENT
ELECTRIC POTENTIAL
ELECTRONIC CIRCUITS
FEEDBACK
TRANSFORMERS
TRANSISTORS
CONTROL
CURRENTS
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
EQUIPMENT
FILTERS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
SEMICONDUCTOR DEVICES
424000* - Engineering- Pollution Control Equipment- (1980-1989)