Schmidt trigger adopts potential trigger mode, and its state is maintained by input signal potential; Schmidt trigger has different threshold voltages for negative falling and positive rising input signals.
Under the action of external pulse, monostable trigger can change from steady state to transient state. Due to the function of RC delay link in the circuit, the transient state returns to the original steady state after a period of time, and the time to maintain the transient state depends on the parameter value of RC.
Extended data
Schmidt trigger can be used as a waveform shaping circuit to shape the analog signal waveform into a square wave that can be processed by digital circuits. In addition, Schmidt trigger can be used for anti-interference because of its hysteresis characteristics. Its applications include anti-interference in open-loop configuration and multi-oscillator in closed-loop positive feedback/negative feedback configuration.
The monostable trigger can generate a pulse with a certain width, and an input pulse that is too narrow or too wide can be integrated into a pulse with a fixed width for output.
Multi-harmonic oscillator, using deep positive feedback, makes two electronic devices switch alternately through resistance-capacitance coupling, thus generating square wave output by self-excitation. Usually used as a square wave generator. When working, the state of the circuit automatically alternates between these two transients, thus generating rectangular wave pulse signals, which are often used as pulse signal sources and clock signals in sequential circuits.
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