This switching behavior does not trigger a free-running oscillation, in contrast to an astable multivibrator. When an electronic pulse is input to the circuit, the output will switch between two possible states (a high and low output voltage). The bistable multivibrator operates like a pulse detector. There are three types of multivibrator circuits: monostable, astable, and bistable. Once you’ve built your circuit, there are some simple simulations you can perform to verify its functionality. ![]() Instead, you might consider building a bistable multivibrator from discrete components. If you want to build a fast pulse detection circuit, a 555 timer configured as a bistable multivibrator won’t do the trick. These circuits are often viewed as simple educational tools, but they have some useful applications as moderate frequency and fast electronic pulse detectors. Think back to your electronics classes in high school or college you probably built a multivibrator circuit from an op-amp or discrete transistors. ![]() Multivibrator circuits are critical timers, oscillators, and pulse sensors.
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