| 摘要 |
<p>PURPOSE:To simplify the circuit configuration by connecting in parallel a resistor to a first transistor, connecting in series a second transistor and plunger, turning ON the first and second transistors while the plunger absorbes and turning ON only the second transistor while the plunger holds. CONSTITUTION:A first transistor 13 and a resistor 16 are connected in parallel each other and a plunger 15 and a second transistor 14 are connected in series each other for this parallel circuit. During the period from the time t1 to t2, both first and second transistors 13, 14 turn ON, a voltage Va is applied across the plunger 15 through the first and second transistors 13, 14. During the period from the time t2 to t3, the first transistor 13 turns OFF, the second transistor 14 turns ON, and a voltage Va is applied across the plunger 15 through the second transistor 14 and resistor 16.</p> |
