| 摘要 |
<p>PURPOSE:To simplify the constitution and also to decrease the number of wirings for a driving device by energizing sequentially the 2nd driving circuit while the 1st driving circuit conducts and then the electrical actuators are activated successively. CONSTITUTION:The light emitting elements A11-Akl are divided into the 1st groups G14nGk, and these group include the 2nd elements A11-A1l, A21-A2l and Ak1-Akl respectively. The anodes of groups G1-Gk of the elements A11-Akl are connected to switching transistors TRQ1-Qk of the 1st driving circuit respectively. While the cathodes of the elements A11-Akl are connected to the switching TRQP1-Pl of the 2nd driving circuit respectively. Then the control signal is obtained from a control circuit 21. Thus the elements All-Akl can be actuated successively.</p> |
