三个稳定状态的触发器电路(图一)与普通触发电路不同的地方是,把普通触发电路的公共射极电阻换成了由四个电阻及二个二极管所组成的网络。除此而外,此种电路与普通触发器的区别还在于只有在静止状态下电路才是对称的,而在动态状态时由于有 C_3存在,所以是不对称的。现在研究一下这种电路工作在三个稳定状态时的 The three steady-state flip-flop circuits differ from normal flip-flop circuits in that the common emitter resistor of a common flip-flop circuit is replaced by a network of four resistors and two diodes. In addition, the difference between this kind of circuit and ordinary flip-flop lies in that the circuit is symmetrical only when it is at rest, and is asymmetrical under the dynamic state due to the existence of C_3. Now look at this circuit is working in three stable state