| 摘要 |
<p>PURPOSE:To make it smooth, easy and secure to load and unload a cassette by providing an electric driving method and DC electric power source for driving a cassette loading-unloading device, a charging-discharging circuit generating a control signal, etc. CONSTITUTION:Switch method S1 is placed at normally open contact V2, and switch method S2 at normally closed contact W1, so that motor M and electromagnetic solenoid P will not be energized. When switch S1 is changed over to normally closed contact V1 in this state, electric control method G is turned on because switch method S2 is at normally closed contact W2, and consequently motor M and electromagnetic solenoid P are energized. Next, switch method S2 is switched to normally open contact W2, and consequently electric driving method G is turned off to deenergize motor M and electromagnetic solenoid P. Therefore, the constitution like this makes it smooth, easy and secure to load and unload a cassette.</p> |
