US1778416A

US1778416A - Rectifier circuit

Info

Publication number: US1778416A
Application number: US156602A
Authority: US
Inventors: Leroy J Buttolph
Original assignee: General Electric Vapor Lamp Co
Current assignee: General Electric Vapor Lamp Co
Priority date: 1926-12-23
Filing date: 1926-12-23
Publication date: 1930-10-14
Anticipated expiration: 1947-10-14

Description

Oct. 14, 1930. 1.. J. BUTTOLPH RECTIFIER CIRCUIT Filed Dec. 23, 1926 0.0. OUTPUT D.C. OUT 1U? 4\ A.O.SUPPLY INVENTOR HIS ATTORNEY Patented Oct. 1 4, 1930 UNITED STATES PATENT OFFICE LEROY J'. BUTTOLPH, O1 GRANTWOOD, NEW JERSEY, ASSIGNOR TO GENERAL ELECTRIC VAPOR LAMP COMPANY, OF HOBOKEN, NEW JERSEY, A CORPORATION OF NEW mnsnr REC'IIFIEB CIRCUIT Application fled December 23, 1928. Serial No. 156,802.

The present invention relates to electric circuit connection means for current rectifiers. The invention more particularly relates to circuits for rectifiers of the, lass bulb vapor arc type of rectifier in w ich means are incorporated for preventing connection of full supply current to the rectifierwhen the output current circuit is open.

Various other objects and advantages of the invention will be obvious from the following particular description of circuits embod ing the invention or from an inspection of the accompanying drawings; and the invention also consists in certain new and novel features of construction and combinationof parts hereinafter set forth and claimed.

Y In the accompanying drawings I have shown for purposes of illustration circuits embodying the invention, in which Fi 1 is a circuit diagram for a full wave rectification circuit and Fig. 2 is a diagram of a similar circuit in which several rectifiers are connected in series in each wave side of the circuit.

In Fig. 1 the transformer primary 1 has an input lead 2 and another input lead 4 in series in which is connected resistor 5. Across said resistor 5 is connected the shunt circuit comprising the lead 6 and the switch 8 therein. The spring 10 tends to hold said switch 8 open from the transformer secondary 12, which is in operative relation to said primary 1, lead 14 connects to the anode 16 of the vapor arc rectifier 18, and from another point the lead 20 connects to the anode 22 of the rectifier 24. The

filament cathodes

26 and 28 of

rectifiers

18 and 24 respectively are heated by suitable sources of current 30 and 32 respectively. Said

filaments

26 and 28 connect with each other through the lead 34 and from that lead through the lead 36 through the solenoid 38 to an output main 40. A second output main 42 connects with an intermediate point on said transformer secondary 12. In operative relation with said solenoid 38 and the core 48 therein is an armature 46 mounted on said switch 8. Said armature which is attracted when said solenoid 38 is energized, actuates said switch 8 against said spring 10 to close said switch.

In Fig. 2 in addition to said

rectifiers

18 and 24 and in series with each in the respective wave side of the circuit are connected additional

vapor arc rectifiers

18, 1 8 and 24, 24'. The other parts and connections in' the circuits are substantially the same as those above described in connection with Fi ure 1.

t has been found that gas or vapor arc rectifiers such for example as those of the tun ar type can when connected toan output loa be operated with higher voltages on the in ut mains in multiple wave rectifying circults than the rectifiers will stand when there is no load to draw current therefrom. The circuit and apparatus herein described and embodying the present invention permits the use of the rectifiers on circuits of higher voltage than the tubes will stand when the work circuit is o ened because when no current is passing t rough the work circuit or output circuit and solenoid 38 is not energized said spring 10 will open the switch 8 and throw said resistance 5 in series with the primar 1 and thereby cut down the voltage applie to the transformer and to the rectifier. This resistance 5 upon the closin of the work circuit is immediately shunted by the switch 8 because as soon as the work circuit is closed and current flows therethrough said solenoid 38 is energized, armature 46 is actuated thereby and the resistance 5 is shunted permittin the application of full voltage to the rectifying circuit,

While I have shown and described and have pointed out in the annexed claims certain novel features of the invention, it will be understood that various omissions, substitutions and changes in the forms and details of the apparatus illustrated and in its operation ma e made by those skilled in the art without eparting from the spirit of the invention.

I claim:

1. In combination in a system of electric distribution, a transformer having input 7 leads and output leads, a resistance in series in one of said input leads, a shunt circuit across said resistance including a switch, a rectifier and a solenoid in series in said out- IUU put leads means tending to hold said switch open, and an armature mounted in o erative relation with said solenoid and sai switch to be moved by said solenoid to close said switch when said solenoid is energized.

2. In combination in a system of electric distribution, a transformer having input leads and out ut leads a resistance in series in one of sai input leads, a shunt circuit across said resistance including a switch which is normally open, a rectifier and a solenoid in series in said output leads, and an armature mounted in operative relation with said solenoid and said switch to be moved b sai solenoid to close said switch when sai so enoid is energized.

3. In combination in a system of electric ilistribution, a transformer having input eads and out ut leads a resistance 1n series in one of sai input "leads, a shunt circuit l across said resistance including a switch, a gas or vapor arc rectifier and a solenoid in series in said output leads, means tending to I hold said switch open, and an armature mounted in o erative relation with said solenoid and sai switch to be moved b said solenoid to close said switch when sai solenoid is energized.

4. In an electrical distribution system in combination with a gas or vapor arc rectifier, a transformer having a secondary ta connected to an electrode of said rectifier an another tap to a work circuit lead, a connection from an opposite electrode of said rectifier through a solenoid to another work circuit lead, supply leads connected to said transformer havmg a resistance in series in one of them, a shunt circuit across said resistance, a switch in said shunt circuit hav- 40 ing a spring tending to hold it in the open Y position, an armature in operative relation tosa'id solenoid and to said switch adapted to close said switch when said solenoid is energized.

5. In combination in a system of electric said switch being normally open, a rectifier and an electromagnet in series in said output leads, and an armature mounted in operative relation with said' electromagnet and said ti to be moved by said electromagnet to distribution, input leads and output leads,

across said resistance in cluding a switch,