| 摘要 |
<p>PURPOSE:To dissolve the problem of the consumption and deterioration of a contact part and a driving part, to increase reliability and durability and to remove an erroneous action accompanying the switch operation by using a solid state relay in place of a switch. CONSTITUTION:When the section between the b-c of a switch 6 is short- circuited by turning on a power source, the negative terminal of the input of a solid state relay SSR4 comes to a grounded state, a current flows at a light emitting circuit 10, a TRIAC 13 of the SSR4 is short-circuited, a commercial power source is supplied to the input side of a power source part 1, the power source is supplied from the power source part 1 to a load circuit 2, the power source resetting function of a resetting circuit 18 works, an FF16 is cleared, an open collector 7 outputs an 'L' signal and the SSR4 is turned on. A central processing device 3 and the load circuit 2 execute the usual action. After the processing of the device 3 is completed, the circuit 18 and the load circuit 2 are reset by the OR condition of a Q terminal of the FF16 and a button switch B1.</p> |
