考虑到电路是互补对称的，一器件可将另一器件视为它的漏极负载。还应注意到，器件在放大区（饱和区）呈现恒流特性，两器件之一可当作高阻值的负载。因此，在过渡区域，传输特性变化比较急剧。-Taking into account that the circuit is a complementary symmetry, a device may be another device as its drain load. It should also be noted that the device is presented in the enlarged area (saturated zone) constant current characteristic, the two devices can be used as one of the high resistance of the load. Therefore, in the transition region, the transmission characteristics change drastically.