| 摘要 |
This system is for control striking force of hammer according to character surface area for typewriter. The output of amplifier(7) receiving signal varied with state or input resistance with respect to character surface area operates coil(5) of driving device(c) in operating time of transistor(Q1) turned on by hammer fire signal(A) from main controller(1). The output signal is compared with the voltage at G point of driving device in comparator controlled and controls current flowing to coil(5) to varify magnetic flux. |
