| 摘要 |
A signal detecting circuit includes a first source follower having an input connected to a first voltage source, and a second source follower having an input connected to a second voltage source. There is provided an additional field effect transistor having a gate connected to the input of the second source follower, a source which is connected through a resistor to an output of the first source follower. The source of the additional field effect transistor is connected to a signal input terminal and one input of a voltage comparator whose other input is connected to an output of the second source follower.
|
