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Multivibrator
f-alpha.net » Electronics » Basic Circuits » Multivibrator » Let's go... » Experiment 5 - monostable MV

Experiment 5 - The monostable Multivibrator

Take a look at the circuit shown. The multivibrator is now using the resistor R4 and the capacitor C1 as coupling elements.

Circuit of a monostable multivibrator. (Enlarge)

Circuit diagram of a monostable multivibrator.

Connecting the battery, LED2 lights up. As long as you are not touching the push-button switch, it stays that way. The state is stable.

By pressing the push-button switch S1, LED2 goes out and LED1 lights up.

But now something new happens. The LED1 lights only for a few seconds and the multivibrator falls back to its stable state.

Monoflop

This circuit is also known as a Monoflop, Univibrator or Oneshot.

But how does this circuit work...?

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