| 摘要 |
PURPOSE:To save power consumption throughout standby state by automatically turning on a power source in response to a call signal from a facsimile transmitter, and automatically turning off the power source on the completion of facsimile communication. CONSTITUTION:When a call signal arrives between input terminals 1 and 1' a relay 4 is energized to close a make contact 5. Therefore, power is supplied from power input terminals 6 and 6' to generate an output at the secondary coil 9 of a power transformer 7, and then a relay 12 is energized to close a contact 13. On communication, when a contact 14 is closed by an end signal from a receiving circuit, the output of the secondary coil 15 of the power transformer 7 charged in a capacitor 17 is supplied to a relay 20 to make a make contact 21. Therefore, even after the reception end signal is ceased, the relay 20 is held. When the relay 20 is made, a contact 22 is changed over to the make side and the relay 12 is broken, so the contact 13 is also broken to cut off the power source completely. |
