| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a signal transmission circuit without any erroneous operation even if a coupling coefficient of a transformer for electrically insulating input and output sides is bad. <P>SOLUTION: The signal transmission circuit 1 is constituted with a primary side circuit 111 for generating a pulse voltage respectively at the rise timing and fall timing of an input signal, a transformer 113 for receiving a pulse voltage generated in the primary side circuit 111 with a primary side coil, and a secondary side circuit 2 for raising an output signal in the timing of generating the first pulse voltage among the pulse voltages generated in the secondary side coil of the transformer 113 and falling the output signal in the timing of generating the pulse voltage generated next. The secondary side circuit 2 is constituted to neglect the pulse voltage generated in the secondary side coil for the predetermined period from generation of the first pulse voltage or for the predetermined period from generation of the next pulse voltage. <P>COPYRIGHT: (C)2009,JPO&INPIT |
