Hi,
I've 113KHz piezo transducer @113KHz,
I'm trying to drive using esp32 PWM.
The circuit is like below
https://drive.google.com/file/d/1zhKuv2 ... sp=sharing
I don't see any signal at the output to the transducer
Few more images
a) PWM from esp32
https://drive.google.com/file/d/1zLPTC6 ... sp=sharing
b)Drain output- https://drive.google.com/file/d/1zXeZok ... sp=sharing
c)Drain out without the supply- https://drive.google.com/file/d/1zNONu0 ... sp=sharing
Driving the Piezoelectric transduce 113KHz
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- Posts: 11
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Re: Driving the Piezoelectric transduce 113KHz
Hard to say... given the fact that your ESP32 outputs a PWM signal, it's not software. Perhaps your mosfet is broken? You're effectively building half a boost circuit with the mosfet plus the inductor, possibly at some point the Vds got so high it killed it?
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- Posts: 11
- Joined: Thu Mar 25, 2021 5:44 am
Re: Driving the Piezoelectric transduce 113KHz
No, Mosfet seems to be fine (VSD-0.5V)
Re: Driving the Piezoelectric transduce 113KHz
Did you get the PWM and Piezo working needed help with the same
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