Astable Multivibrator - Solid-state Devices and Analog Circuits - Day 6, Part 5

The astable multivibrator is one of the simplest oscillators. It is simply two common-emitter amplifiers where the output of the second is fed to the input of the first. Because of its high gain, it saturates and produces square waves.

Here is the link to my detailed video on the astable multivibrator:

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[patricklanra]

Vous êtes le meilleur. Merci pour toutes vos vidéos et votre talent dans la transmission de votre savoir.

[johng.]

Your explanation of how the astable mutivibrator works via positive feedback leading to extreme saturation to the point that the output looks like a square wave....is much much much easier to understand than the on off capacitor explanation.

[xDRTeK]

I'm an engineer and I object! I'm not lazy 🤣. I love watching circuit videos, especially when veterans are at the helm. Thank you for the simplified presentation there, so when are we going to expect the heavy lifting? 💪

[david_pilling]

One of the first circuits I built using my Philips electronics kit (a long time ago). It is still not easy for me to grasp how it works. One transistor is on, one is off and one of the capacitors charges up to change the situation. Your presentation in these lectures is excellent.

[steve]

Hey just wanted to say thanks for posting !

[ma]

Perfectamente explicado sin la matemática confusa de Millman y Taub.

[cnccontroller]

Interesting as always, thank you very much!

[pavlobilous]

Nice explanation! I am trying to create a circuit for d type flip flop and I think I only need to add an inverter to the circuit you described (assuming removing capacitors). Thanks!

[Gortmend]

Want to add to the chorus that the feedback setup is way easier for me to understand. I think because in the feedback schematic, the signal flows from left to right, instead of typical schematic, where the capacitor on the left triggering the transisitor on the right (and vice versa), which gets confusing.

[harriskp]

Why do the RC combos in this circuit not produce phase shifts of their own, like they do in a phase shift oscillator?

[sajjad]

Hi sir. Thank you for your explanation.
I have a question. How can we apply barkhausen criteria to this oscillator?
Thank you

[андрій-ччы]

Which is practical use of astable mutivabrator?
Example, please?