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Patent Searching and Data


Title:
SWITCHING POWER SUPPLY CIRCUIT
Document Type and Number:
Japanese Patent JPH06189544
Kind Code:
A
Abstract:

PURPOSE: To provide a two-transistor type switching power supply circuit for driving two switching elements with a simplified constitution.

CONSTITUTION: A bridge type switching circuit is constituted by two diodes D1, D2 and two switching elements SW1, SW2 and a power is supplied to a transformer T through ON-OFF drive of the switching elements SW1, SW2. The first switching element SW1 is provided with a switching element drive circuit 1 for controlling the ON/OFF of the element itself in the predetermined period, while the secondary switching element SW2 receives directly a voltage across a sub-coil P2 of the transformer T as a drive voltage.


Inventors:
NORO MASAO
Application Number:
JP35456092A
Publication Date:
July 08, 1994
Filing Date:
December 16, 1992
Export Citation:
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Assignee:
YAMAHA CORP
International Classes:
H02M3/335; H02M7/5387; (IPC1-7): H02M3/335; H02M7/5387
Attorney, Agent or Firm:
Itami Masaru