Questions tagged [piezo-buzzer]
A piezo buzzer contains a piezoelectric element combined with an in-built oscillator / driver to produce an audible sound. While the output frequency is fixed using them is as simple as applying a DC voltage within the specified range.
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Shared buzzer - algorithm for switching on and off
Question is not about electronics but requires specific experience in building the electronics. I am designing the circuit which would beep with various shapes - on/off durations as well as beep ...
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Piezo T/R switch
I try to use single piezo as transceiver. Is this possible if i can T/R switch using FET or BJT ?
I found this schematich but not sure if it works.
https://www.researchgate.net/publication/...
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Using piezo as range sensor
My objective is to use a single piezo as a transceiver and calculate the distance between the sensor and the object that sound echos from using time of fly. I use ...
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Piezoelectric disks gives higher output at a particular low frequency far from the resonant frequency?
I have a PZT disk attached to a shaker/vibration generator. The resonant frequency is 3.9kHz.
The following is the output of the PZT disk on the shaker, being shook at different frequencies.
One ...
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Charge Amplifier not amplifying at most frequencies
I have a piezoelectric element, which acts as an accelerometer. Attached to it is a charge amplifier, built based on this documentation. The op-amp is the TL081.
The PZT element is simulated based on ...
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Piezo electric buzzer as a crystal earpiece? [closed]
Making a foxhole radio, saw on https://rimstar.org/equip/crystal_earphone_earpiece_for_crystal_radio.htm
can you actually use a buzzer as a crystal earpiece?
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Piezo buzzer testing for defects using electrical parameters
I am looking for methods to verify whether a Piezo is damaged/defective or good.
Are there ways to verify that using just electrical parameters like resistance, capacitance etc.
My issue is that it's ...
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Speaker and buzzer sound levels issues
I have designed two test boards to evaluate the sound levels of several speakers and buzzers. While the buzzers are functioning as expected, the speakers are producing sound levels that are ...
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Piezo transducer as both microphone and speaker
I'm trying to find the best piezo transducer for my project, which is a Morse code sender and receiver.
Since a piezo transducer can both act as a speaker and a microphone, and I only send/receive at ...
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How are piezoelectric buzzer ceramics polarized to make them change diameter instead of thickness
Synthetic piezoelectric materials are polarized by applying a high voltage to them and heating them above their Curie point then cooling them. When a voltage of the same polarity is applied they get ...
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Self Drive Piezo Element/Self Excited Piezo Element Circuit
I have a self drive piezo element/self excited piezo element that I want to resonate at about 1-2kHz. As of my understanding, by using a circuit like in the figure below, the element will resonate at ...
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How does the KLJ-5030 buzzer work?
I need a small package buzzer to replace the regular piezo buzzer which is too big for my design, so I tried the KLJ-5030.
I tested by applying 3V to positive pin and GND to negative pin and heard a ...
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Weird behaviour on N channel MOSFET and buzzer
I just assembled my PCB design that uses an ESP32-c3-mini-1 as the brain.
I'm testing all the peripherals and found an error when testing buzzer circuit.
I'm using a T2N7002BK N-channel LM MOSFET as a ...
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Turn on an alarm indefinitely when logic is true
I would like to turn on the piezzo buzzer in the following simple schematic indefinitely when the logic is true i.e when both inputs to the AND gate are logic 1. The pulse in the second input can last ...
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Get rid of piezo buzzer base (annoying) buzzing sound when LED's connected to same power source (+5v) are turned on
I have a circuit in which a piezo buzzer is connected to a stm32f303 mcu like so (the DAC pin goes straight into the MCU):
I also have some WS2812B mini LEDs that are connected to a +5v plane (which ...
