| 摘要 |
PURPOSE:To eliminate the generation of click noise in a mechanism start mode and to prevent a sound recording in an unstable state by starting the sound recording after stabilizing once the mechanism in a record stand-by mode and after turning on and off once a synchronizing start switch. CONSTITUTION:Terminals 8a, 9b and 9c which turn on a synchronizing start switch 10 are grounded, and a reproduction mechanism 6 and a record mechanism 7 are set in a reproduction drive state and a record stand-by state respectively. Then the switch 10 is turned off and a charging current flows to a capacitor 13 from a terminal 11 connected to a power supply via a resistance 12. Thus a trasistor (TR)14 is turned on, and the terminal 9a is grounded through the TR14. The mechanism 7 is set in a record traversing mode. In other words, the sound recording is started after the unstable period of the starting time elapses and the mechanism is stabilized.
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