| 摘要 |
The device, according to the invention, consists of a command circuit, which applies the signal of the inlet circuit, which activates a monostable. The monostable sets the starting delay for the execution element through an amplifier and, in the same time, commands a second monostable setting a second delay. The signals collected through a logic gate from the two monostables inhibit the inlet circuit during the period of the second delay, and achieve by this way the limitation of the commands in order to protect the motors during successive starts. The inlet circuit accepts the signal from the command circuit only after the delay imposed by the second monostable, after which the operation starts with the delay imposed by the first monostable, both delays being controlled.
|
