| 摘要 |
PURPOSE:To control the drive of plural electric element loads sequentially with simple and easy execution method by combining a thermister having a critical temperature resistor characteristic and a resistance heater. CONSTITUTION:When a start pulse S is applied, since a current (i) flows to the resistance heater R, the temperature (t) of the thermister T rises and the thermister is closed. When the start pulse S is finished, the thermister T keeps ON-state until a clock pulse phi is applied, a current (i) flows to the thermister T, the resistance heater R and a load Z by the clock pulse phi to bring the thermister T to the ON-state. Similarly, the current (i) flows to the thermister T, the resistance heater R and the load Z by the next clock pulse phi. |
