Title:
INVERTER CIRCUIT
Document Type and Number:
Japanese Patent JPS58123375
Kind Code:
A
Abstract:
PURPOSE:To reduce the power loss of an inverter circuit due to voltage dividing resistor with a simple circuit configuration by obtaining the DC power input of a control circuit by utilizing a rectifer as part of a full-wave rectifying circuit. CONSTITUTION:One side of a bridge of a full-wave rectifying circuit B1 is composed of two rectifiers, and the voltage across one rectifier D1 of the rectifiers is supplied to the power input terminals a, a' of a control circuit A through a voltage dividing resistor R1, a smoothing condenser C3 and a Zener diode ZD1. When a power switch S1 is closed and the voltage across the rectifier D1 of the rectifying circuit B1 is applied to the control circuit A, an oscillator oscillates to supply a base current to transistors Tr1, Tr2 alternately from both output terminals b, c of the control circuit A, and a high frequency voltage is applied to a load L. According to this configuration, since the voltage across the rectifier D1 is small, the voltage of the resistor R1 can be reduced.
Inventors:
OKAMOTO FUTOSHI
Application Number:
JP514882A
Publication Date:
July 22, 1983
Filing Date:
January 15, 1982
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
H02M7/5387; (IPC1-7): H02M7/48
Attorney, Agent or Firm:
Ishida Choshichi