Design example of a single-fault-safe solenoid driver

[@robson6285]

This videolesson about the designoptions for a circuit is the most interesting or usefull because it learns you to make your own circuits better working. I love these lessons the most of all! Thanks so much for digging deeper in these kind of problems we all have had sometimes in our circuits.

[@sambenyaakov]

Thanks Rob

[@tseckwr3783]

Thanks for another informative video, Professor.

[@sambenyaakov]

Thanks

[@iblesbosuok]

Thank you very much, professor Sam Ben-Yaakov, sir

[@sambenyaakov]

Thanks

[@shashankgaonkar2546]

Well explained..
Thanks for another informative video

[@sambenyaakov]

Thanks

[@mohammadhassanzade6893]

Very useful 👍
Thank you professor 🙏

[@sambenyaakov]

Thanks

[@guitardenver1]

Great Video!
The ability for the MOSETs to absorb the inductor kickback was new to me, and I'm so glad I watched this video. Do these frequent high voltage spikes across the MOSFETs increase the stress on the MOSFETs? In regard to the operating life and transistor degradation over time? I have read high voltage stress can cause transistor parameters to change and could cause a failure.

[@sambenyaakov]

"Do these frequent high voltage spikes across the MOSFETs increase the stress on the MOSFETs? "not as far as I know. Obviously if the avalanche is repeated continuously, one has to worry about the thermal dissipation.

[@justinn771]

Perfect!!

[@sambenyaakov]

Thanks

[@HoldenBrownuwish]

Would it also be a good idea to place a zener diode from the MC output to ground, in case the voltage at the port rises? The zener could then break down, and shunt the potential current/spike to ground. This would of course further reduce the speed of the solenoid operation.
Thanks!

[@sambenyaakov]

Not really necessary.

[@larslindgren3846]

You are still relying on only one mcu pin. Unless your mcu is designed to have fault tolerant pins a single faulty transistor in the mcu can turn on the load. I would use two MCU:s that monitor each other.

[@sambenyaakov]

Thanks for comment. Good point.

[@shaileshchityala2787]

prof.. can you share spice prj files of videos?
your videos are gold mines..

[@sambenyaakov]

Thanks. You mean the LTspice file? It is very simple.

[@sikandarshah4539]

Hello Sir, Can you please make a detailed Video lecture about EMC design?

[@sambenyaakov]

Have you seen: czcams.com/video/5NRiLOvmXdA/video.html ?

[@sikandarshah4539]

@@sambenyaakov Thank so much sir, I will watch it now