Title:
CHOPPER DEVICE
Document Type and Number:
Japanese Patent JPS592567
Kind Code:
A
Abstract:
PURPOSE:To set the ratio of an output to an input proportional to the output signal of a voltage error amplifier by providing a conduction time correcting circuit between the voltage error amplifier and a conduction time arithmetic circuit, thereby compensating nonlinear characteristics. CONSTITUTION:A detection signal from a voltage detector and a set value from a voltage reference setter are applied to a voltage error amplifier 17. A conduction time correcting circuit 23 which has a divider 24 and a subtractor 25 is provided between the amplifier 17 and a conduction time arithmetic circuit 19. The correcting circuit 23 corrects the output signal of the amplifier 17 and applies its output to the arithmetic circuit 19. The output of the arithmetic circuit 19 is applied to a switching command circuit 22, and a semiconductor switch is controlled to be opened or closed by the output signal.
Inventors:
MIYAZAWA YOSHIAKI
Application Number:
JP10985082A
Publication Date:
January 09, 1984
Filing Date:
June 28, 1982
Export Citation:
Assignee:
TOKYO SHIBAURA ELECTRIC CO
International Classes:
H02M3/155; H02M3/10; (IPC1-7): H02P13/32
Attorney, Agent or Firm:
Noriyuki Noriyuki