GB949770A - Current control apparatus for electro-plating vats - Google Patents

Current control apparatus for electro-plating vats

Info

Publication number
GB949770A
GB949770A GB4885862A GB4885862A GB949770A GB 949770 A GB949770 A GB 949770A GB 4885862 A GB4885862 A GB 4885862A GB 4885862 A GB4885862 A GB 4885862A GB 949770 A GB949770 A GB 949770A
Authority
GB
United Kingdom
Prior art keywords
regulator
supply
current
indicator
amplifier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4885862A
Inventor
Thomas Philip Robinson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB4885862A priority Critical patent/GB949770A/en
Publication of GB949770A publication Critical patent/GB949770A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/12—Process control or regulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Automation & Control Theory (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Control Of Voltage And Current In General (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Transformers For Measuring Instruments (AREA)

Abstract

949, 770. Current control apparatus for electro-plating vats. STANDARD TELEPHONES & CABLES Ltd. Dec. 28, 1962, No. 48858/62. Heading G3R. The current density in an electro-plating vat 1, supplied with D.C. from an A.C. supply 4 through a regulator 5, a transformer 6 and a rectifier 3, is maintained constant by a magnetic amplifier 7 having an input 71 from the supply 4, an output 72 to the regulator 5 and D.C. control windings 73, 74, 75 connected respectively to a D.C. constant reference voltage 9 via a potentiometer 8, to a current indicator 2a via an overcurrent indicator 10, and to the supply terminals of the vat 1. The amplifier 7 provides the algebraic sum of the ampere turns of the three control windings, those of of the winding 75 being reversed with respect to the other two and the windings being isolated electrically from each other. The regulator 5 can be a transductor arrangement or a motor driven regulator using either an A.C. split phase motor or a D.C. motor having a centre-tapped field winding. Accordingly the amplifier 7 may give a single output for the transductor arrangement or a push-pull output for the driving motor. The indicator 2a may comprise any one of the following forms:- (a) part or whole of the D.C. supply bus -bar threading the toroidal core of the amplifier 7. (b) a shunt connected in the output of rectifier 3 (c) the D.C. supply bus-bar threading a current transductor whose output is rectified and applied to the amplifier 7. The indicator 10 may comprise a current-sensitive relay arranged to provide an alarm, to trip a main supply switch or to take overriding control of the regulator 5 when this is motor-driven. The voltage source 9 is fed from the supply 4 and may include a constant voltage transformer and/or a Zener diode. The voltage/current characteristic for the vat, Fig. 1 (not shown) may be varied by adjustment of potentiometer 8 and the feed back from indicator 2a, which may be connected between the regulator 5 and transformer 6 and modified accordingly, Figs. 3 and 4 (not shown).
GB4885862A 1962-12-28 1962-12-28 Current control apparatus for electro-plating vats Expired GB949770A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4885862A GB949770A (en) 1962-12-28 1962-12-28 Current control apparatus for electro-plating vats

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4885862A GB949770A (en) 1962-12-28 1962-12-28 Current control apparatus for electro-plating vats

Publications (1)

Publication Number Publication Date
GB949770A true GB949770A (en) 1964-02-19

Family

ID=10450182

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4885862A Expired GB949770A (en) 1962-12-28 1962-12-28 Current control apparatus for electro-plating vats

Country Status (1)

Country Link
GB (1) GB949770A (en)

Similar Documents

Publication Publication Date Title
GB1099866A (en) Inductive coupling apparatus
GB623396A (en) Improvements in or relating to voltage regulators
GB664021A (en) Improvements in voltage regulating systems employing saturable core reactors
GB949770A (en) Current control apparatus for electro-plating vats
GB1011857A (en) Improvements in or relating to electric power modulators
GB718594A (en) Improvements relating to apparatus for the supply of direct current to a load circuit from an alternating current source through a rectifier
GB1178003A (en) Improvements in or relating to Magnetic Regulators
GB1479923A (en) Current-controlling transductor circuits
GB1096622A (en) Improvements in and relating to inductive electrical apparatus
GB739000A (en) Improvements relating to dynamo electric machines
GB1074702A (en) Improvements relating to controlled transformers
GB632056A (en) Improvements relating to alternating electric current generators
GB871631A (en) Self-excited compound alternator
GB1043589A (en) Improvements in regulators
GB739570A (en) Means for voltage regulation by aid of an exciter
GB897491A (en) Improvements in or relating to regulated power supply equipment
GB761060A (en) Control means for voltage regulators for alternating electric current generators
GB729512A (en) Improvements in or relating to an electrical generating system
GB859038A (en) A.c. to d.c. power supply variable as to polarity and magnitude
GB890253A (en) Improvements in or relating to regulated electric power supply equipments
GB532434A (en) Improvements in motor control systems employing variable voltage transformers
GB663278A (en) Improvements relating to a.c.-d.c. electrical systems
GB771240A (en) Improvements in or relating to alternating current generating systems
GB1154076A (en) Improvements in or relating to Devices having Stabilised D.C. Motors.
GB825240A (en) Electrical equipment for connecting a polyphase machine with a polyphase network