Title:
SURGE PROTECTIVE CIRCUIT
Document Type and Number:
Japanese Patent JPH02303319
Kind Code:
A
Abstract:
PURPOSE: To suppress surges by providing a conductor gap, which causes spark discharge to high voltage applied, between power input lines.
CONSTITUTION: A surge protective circuit 1 is provided between an AC power input terminal and a rectifier OB. The surge protective circuit 1 is the one where a conductor gap 4, which causes spark discharge, is formed in the power input line on the input side of a capacitor C and a resistor R is connected to the input side. The discharge gap 4 is formed by projecting triangular projections 5a, respectively, from the positive and negative copper foil patterns 5 in the power input line on a printed board. When surges occur, spark discharge occurs between the projections 5a, and the surges are suppressed.
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Inventors:
MAEKAWA TAKIO
Application Number:
JP12112689A
Publication Date:
December 17, 1990
Filing Date:
May 15, 1989
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
H02H9/06; H01T4/10; H05K1/02; H05K1/18; (IPC1-7): H02H9/06
Domestic Patent References:
| JPS62204506A | 1987-09-09 | |||
| JPS603680B2 | 1985-01-30 |
Attorney, Agent or Firm:
Ishida Chochichi (2 outside)
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