Automatic polarity changing device

Details Automatic polarity changing device Automatic polarity changing device

1978-05-18

1980-09-23

Gonzales, John

Electrical transmission or interconnection systems

Switching systems

Condition responsive

361246, 204305, H01H 4700, H01H 4332

Patent

active

042245290

ABSTRACT:
A device for automatically changing the polarity of a direct current supply source for use in a cataphoresis apparatus comprises a switch for changing the polarity of migration current, a device for generating a functional signal in response to a detection of the finish or the beginning of the migration current, a signal processing device connected to the functional signal generator for processing the functional signal to drive the polarity change switch and a polarity changing device connected between the signal processing device and the polarity change switch for instructing polarity change of the migration current to the polarity change switch and for memorizing the changed polarity of the migration current in spite of switching on or off of a power supply source. The polarity changing device always changes the polarity of the migration current to a polarity opposite to the just before polarity every detection of the finishing or the beginning of the migration current.

REFERENCES:
patent: 947781 (1910-02-01), Babcock
patent: 2558090 (1951-06-01), Jernstedt
patent: 2820157 (1958-01-01), Rieke
patent: 3140424 (1964-07-01), Stech
patent: 3415726 (1968-12-01), Roller

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