| 摘要 |
PROBLEM TO BE SOLVED: To provide a Pachinko game machine capable of preventing malfunction in Darlington power transistors PTr1-PTr4 caused by heat. SOLUTION: Heat is hardly accumulated in the package of a drive IC 50 because chips of diodes FBD1 and FBD2 for absorbing flyback voltage and chips of diodes FBD3 and FBD4 for absorbing flyback voltage can alternately radiate heat. Accordingly, the joint temperature of the Darlington power transistors PTr1-PTr4 does not rise to a junction temperature, and therefore, malfunction in the Darlington power transistors PTr1-PTr4 caused by heat can be prevented. COPYRIGHT: (C)2008,JPO&INPIT
|
