To provide a power unit with a built-in interface, which is in a simple and inexpensive configuration and is capable of surely preventing electrical noise between a control circuit and the interface.
The power unit 20 with the built-in interface is provided on a board different from a control board provided with a control circuit 21 on the side of a main machine 2 and comprises a power circuit 23 for the interface, a main machine side interface (driver/receiver 24) capable of communicating with an external equipment side interface 12, and a microprocessor 25 for controlling the signals of the main machine side interface 24. The microprocessor 25 and the main machine side control circuit 21 are connected through a pair of bidirectional photocouplers 26.
SAMMY CORP
| JPH07250937A | 1995-10-03 | |||
| JPH10234987A | 1998-09-08 | |||
| JP2004254723A | 2004-09-16 | |||
| JP2003062314A | 2003-03-04 | |||
| JP2001347054A | 2001-12-18 | |||
| JPH11221353A | 1999-08-17 |
Tetsuo Kanamoto
Miaki Kametani