Global Patent Index - EP 0031987 A1

EP 0031987 A1 19810715 - Reference voltage generating circuit in DC regulated power source apparatus.

Title (en)

Reference voltage generating circuit in DC regulated power source apparatus.

Title (de)

Referenzspannungsquelle für eine geregelte Gleichspannungsquelle.

Title (fr)

Source de tension de référence pour une source de tension continue stabilisée.

Publication

EP 0031987 A1 19810715 (EN)

Application

EP 80300052 A 19800104

Priority

EP 80300052 A 19800104

Abstract (en)

DC regulated power source apparatus for incorporation in electronic devices which, when equipment such as a sequence controller or numerical control unit for controlling a machine tool is subjected to maintenance or inspection. require that a power source voltage be shifted from a reference voltage by a fixed value. The DC regulated power source apparatus includes a first output voltage adjuster (4) capable of adjusting an output voltage (Vo sec ) to a desired value by means of a rheostat, and a second output voltage adjuster (18, 17) operated after the output voltage (Vo sec ) has been adjusted to the desired value by the first output voltage adjuster, the second output voltage adjuster being capable of shifting the adjusted output voltage (Vo sec ) by a prescribed amount to a value higher (18) or lower (17) than the desired value by simple manual or automatic switching (16, 19 to 23).

IPC 1-7

G05F 1/56

IPC 8 full level

G05F 1/46 (2006.01)

CPC (source: EP)

G05F 1/468 (2013.01)

Citation (search report)

  • US 3577064 A 19710504 - NERCESSIAN SARKIS
  • US 3566252 A 19710223 - NERCESSIAN SARKIS
  • ELECTRONIQUE & MICROELECTRONIQUE INDUSTRIELLES, No. 162, 15th October 1972, pages 57-60 Paris, FR. C. BOISARD: "Un CI regulateur de vitesse" * Page 59, paragraphe: "Regulation de vitesse et commutation electrique de vitesse nominale"; figures 4,5 *
  • ELEKTOR, Vol. 2, No. 7/8, July/August 1976, pages 739-740 Canterburry, G.B. G. EBNER: "0-30 V/1 A, stabilised" * Whole article *
  • ELECTRONICS, Vol. 50, No. 15, 21st July 1977, page 125 New York, U.S.A. C. VISWANATH: "D-a converter controls programmable power source" * Whole article *
  • ELECTRONIC DESIGN, Vol. 25, No. 7, 29th March 1977, page 104 Rochelle Park, U.S.A. G. BUURMA: "Simple CMOS keyboard encoder circuit" * Whole article *

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0031987 A1 19810715; EP 0031987 B1 19860416; DE 3071548 D1 19860522

DOCDB simple family (application)

EP 80300052 A 19800104; DE 3071548 T 19800104