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.

Filter by
Sorted by
Tagged with
0
votes
1answer
22 views

3.6 Vo-p rated buzzer on 5 V Arduino circuit

As a small buzzer to output simple audio, I am considering the Jiangsu Huaneng Elec MLT-5020. Other buzzers of that size are also an option, as long as their footprint isn’t much bigger than 5×5 mm. ...
-1
votes
0answers
48 views

How to check quality when procuring components? [duplicate]

How can a procurement person check the quality of components before purchasing, like resistors, relays, buzzers, capacitors e.t.c
0
votes
1answer
38 views

What do HSDZ and HYDZ mean for piezo buzzers?

I have some buzzers, which have a label on them, which states "HSDZ REMOVE SEAL AFTER WASHING". I know that washing is the process of removing residues of flux or something else with solvent....
1
vote
1answer
62 views

buzzer circuit problem proteus

In this circuit, the buzzer should sound when the button is pressed. ...
1
vote
1answer
59 views

Idea for a PC bios beep buzzer

Hi I want to make a buzzer for my PC motherboard. Similar things like this: https://boip.in/home/rajiekart-pc-motherboard-internal-speaker-bios-alarm-buzzer-1-pcs-pack?gclid=...
0
votes
2answers
50 views

Why do magnet door/window alarms use always-on switches?

I am looking at door/window alarm designs, and they all use overcomplicated circuits with an always on switch, where the piezo is triggered when the switch is off. If the switch was always off, it ...
0
votes
1answer
57 views

why my active piezo buzzer doesn't give any signal as an input?

I wanted to use my active buzzer as a vibration sensor like the knock lock project of the arduino starters and problem is I can't get any output out of it I expected that that it is because the ...
0
votes
0answers
45 views

Recognizing components in a circuit for a really loud personal alarm

I am a new enthusiast in electronics, trying to realize a first project. The idea would be to use a remote control to scare away pigeons from our trampoline in the back yard. :-) I’ve got that working ...
0
votes
1answer
47 views

Are passive piezo speaker more reliable than magnetic ones?

I'm going to use sound notification in my desing (just beeping). My buzzer needs to be suited for cold ambient conditions (up to 0 celcius degrees), high humidity and shocks. Which buzzer type will be ...
2
votes
1answer
112 views

Single input controlled full H bridge for piezo buzzer

I would like to incorporate a buzzer in a PCB design. It would not be a coil buzzer, but more a piezo buzzer, and its operation is to be controlled with a micro-controller powered by the same voltage ...
0
votes
0answers
41 views

Buzzer Voltage and Current waveforms

I have a buzzer circuit. Waveform : My questions : I have marked the points in the circuit where I am measuring the voltage and the current. PWM pulse is given to the base of the transistor. I ...
0
votes
0answers
31 views

Do active PZT audio buzzers (with built-in driver) create dangerous spikes on power supply?

I am planning to add a active piezo element audio buzzer with built-in driver (BESTAR BPT-14X or LOUDITY LD-BZEL-PB04-1408 ) to my recent quite complex MCU project. These buzzers come with built in ...
1
vote
1answer
69 views

Need help designing LiFePO4 BMS disconnect alarm

I need help designing an alarm for a 12v LiFePO4 + BMS system. I am using an off the shelf BMS. The BMS has internal FET switching which may disconnect the battery for a variety of reasons to protect ...
0
votes
1answer
58 views

Calculate power on time of a buzzer

I would like to use a 5v active piezo buzzer to beep for a second or two. When the relay is on NO the capacitor will charge from the dc source and when the relay is on NC the capacitor will discharge ...
1
vote
1answer
235 views

Potentiometer volume control for a piezo buzzer in bridge (2-pin) configuration

I have a 10K potentiometer that I'd like to use to control the volume of a piezo transducer/buzzer, which is driven by one or more MCU PWM-capable pins (ranging from 0 to 3.3V). Originally, my ...
1
vote
0answers
30 views

SMD piezo solution for pressure/vibration sensors

I've been working with piezo discs for simple applications (i.e. detecting touch/knock, where different levels of intensity can be read). For large production, stripping wires and hand soldering ...
0
votes
1answer
66 views

what is the difference between these two buzzers? [closed]

I am looking for a 5v buzzer and I saw a chinese pack of 24 for 9 dollars on Amazon https://www.amazon.com/tatoko-Electronic-Magnetic-Continuous-Arduino/dp/B07QBHPG2X/ref=sr_1_17?keywords=5v+buzzer&...
2
votes
1answer
338 views

Piezo buzzer vs Speaker

Can anyone explain that what kind of sound a piezo can and cannot produce when compared to A speaker. Can it just play notes? Is there some quality reduction in piezo buzzer?
1
vote
1answer
182 views

(Assumed passive) piezo buzzer makes sound upon shorting leads?

I found a piezo buzzer in an old circuit board. It's (literally) a black box, size of a big coin, maybe 0.8 cm thick, 3 cm across, and a red and a black wire coming out. When I short the red and black ...
0
votes
1answer
89 views

Buzzer circuit understanding

I have a question concerning this circuit I have found on internet since I would like to replace it with a mini dc motor vibrator. Is there any chance someone could explain to me how it works? As ...
0
votes
5answers
308 views

Is it possible to use 7805 regulator without capacitors at its input and output pins?

I have to drive a magnetic buzzer whose current is 50mA and max. voltage is 6V. I will use 7805 regulator to drive it as my supply voltage is variable 9V to 24V DC. There will be another small load ...
0
votes
1answer
261 views

How do I calculate the resistor value for this circuit? Will this circuit allow buzzer to work?

I have a circuit that uses an LED and a simple buzzer. I've created a basic circuit (below) and used a speaker to represent the buzzer. I know two things about the buzzer : Rated Voltage: 12V; ...
0
votes
0answers
44 views

Piezo buzzer : transient audible noise when exciting over 20kHz

Let's 2 simple experiments, connect a piezo buzzer like this one to a bench amplifier driven by a function generator like this one. Driving voltage is 10V. Now excite it with a linear chirp from ...
3
votes
2answers
1k views

8 channel quiz buzzer circuit using 8051 microcontroller

Project: 8 channel quiz buzzer circuit using 8051 microcontroller from this site. For the first candidate who presses their button, their number will show on the 7-segment display and the buzzer will ...
3
votes
2answers
688 views

How can I reduce the volume of my dryer buzzer?

Like many of us, the buzzer in my dryer is loud as hell. I recently opened up my dryer to repair it and easily found the buzzer and simply disconnected it. However I got to thinking: Could I replace ...
0
votes
2answers
75 views

Measuring unknown speaker/piezo element

I have an assortment of small speakers/piezo elements and I'd like to connect them to an arduino without damaging either. I don't know what characteristics the elements have or what to look for but I ...
1
vote
1answer
440 views

Understanding piezo buzzers and their specification

I am using the following piezo buzzer: As far as I understand, a piezo buzzer is a capacitive load. So the current loading this capacitance should be limited in order not to burn the driver (in my ...
0
votes
2answers
141 views

Hardware For Emitting Specific Sound Frequency [closed]

I need a battery-powered hardware setup for emitting a specific frequency or a range of frequencies, in the range of 17kHz-20kHz. It should be picked up by microphones from at least 8 meters away (...
0
votes
1answer
444 views

Bypassing refrigerator door alarm piezoelectric buzzer

My appliances keep beeping at me. How can I deactivate or bypass this refrigerator door alarm buzzer without affecting the rest of the circuit? I thought I could just cut/connect the wires at the ...
2
votes
2answers
143 views

Drive 10 piezo buzzer from micro controler simultaneously and independently

I'm looking for a solution to drive simultaneously 10 piezo buzzer from teensy. I'm aware about the limitations of the number of internal timers so I'm looking for an external chip that would enable ...
2
votes
1answer
631 views

How to add a LED to a Multimeter for use it with the buzzer in continuity testing?

I want to add a notification LED to my digital multimeter which i need to glow with the multimeter`s inbuilt speaker (piezo/buzzer/beeper) while in Continuity testing mode. MM Model : DT830D If i ...
1
vote
1answer
3k views

How to make active buzzer louder

I have an active buzzer connected to an Arduino and everything works fine but the buzzer is just not loud enough. I don't know any specs about the buzzer but I've tried connecting it to a 9v battery ...
1
vote
0answers
202 views

Beeper for lost FPV drone

I am not an expert in electronics, just the very basics so please bear with me. I am trying to create beeper alarm for my FPV drone that will activate when it crashes or no movement for certain ...
1
vote
1answer
416 views

Using piezo buzzer to play complex waveforms

Would it be possible to play complex waveforms(sine waves, triangular waves, multiple voices and suchlike) using a normal piezo buzzer? The buzzer in question doesn't have internal oscillator. [...
1
vote
1answer
218 views

One GPIO pin for LED, Pushbutton and Buzzer via high-pass filter?

There's Pin as both input (for a switch) and output (for LED) with ATmega32U4? but I also need one of six such pins to drive a piezo buzzer. Due to its capacitive nature, I figured it could be ...
1
vote
1answer
184 views

Transistor switch - extra resistor required?

I am new to electronics and this forum, and am in the process of building a Raspberry Pi based homebrew controller. Following the article in the eLinux wiki, here is the relevant part of my circuit: ...
0
votes
1answer
618 views

Startup Buzzer Sound

I have made a button box, using an Arduino mini pro, which includes LEDs and buzzers. I am using a shift register (74HC595) with a ULN2003 (to use 12v on the LEDs) to decode the SPI. See the top ...
1
vote
1answer
1k views

Arduino nano, unexpected sound from buzzer when receive data from radio module HC-12

I make a simple circuit with an: Arduino Nano HC-12 Long distance radio module HC-12 Antenna 1000 uF Capacitor Buzzer 220 Ohm Resistor I need that the buzzer emits a noise when Arduino receives ...
1
vote
2answers
1k views

How to silence a 5V electrical beeper/buzzer [closed]

We have a simple circuit operated by 2 AAA batteries, it has a simple board inside with one of these 5V electrical beepers that makes sound every time it does something. It looks exactly like the one ...
0
votes
1answer
142 views

12V LED, Buzzer, and 4 Switched grounds enter a Bar

First posting so I will try not to step all over the rules. Notice: I am a novice. My project is 12 volts DC and to have a buzzer activate when any of 4 LEDs are illuminated. I have a few ...
1
vote
3answers
2k views

Piezo buzzer giving faint clicks instead of loud buzz

Please note: Even though this question involves a Raspberry Pi, I really think its an essential electronics question at its heart, and that the fact that I'm dealing with a Pi is secondary. I have ...
2
votes
2answers
3k views

Why don't piezo buzzers require resistors?

I'm new to electricity & electronics and am fumbling my way through some Raspberry Pi tutorials. One in particular has caught my interest, which hooks an RPi up to LEDs, pushbuttons and a piezo ...
2
votes
2answers
4k views

How to tell if a buzzer is passive or active?

I see a lot of buzzers (like this one) that are sold online and don't advertise whether they are active (a DC power signal produces noise) or passive (to make noise they require both the DC power ...
0
votes
0answers
137 views

ESC/POS pulse activated siren

I would like to design a system that works with my ESC/POS thermal printer that activates a siren when a receipt is printed. My thermal printer has an RJ12 port which is intended to connect to a cash ...
1
vote
2answers
505 views

Running a magnetic buzzer using coin cell battery

I would like to operate a small magnetic SMD buzzer using a coin cell battery. However, magnetic buzzers require at least approx. 40mA to run, which I think is more than a coin cell battery can output....
1
vote
1answer
752 views

How to reduce/remove piezo pickup hiss

I made a stompbox which is basically a small wooden box with a piezo element inside that when stomped on produces a sound similar to a bass drum except that the thing is much more portable. The ...
5
votes
4answers
2k views

Hacking musical birthday cards [closed]

I bought a musical birthday card with a small circuit in it hooked up to a piezo speaker. I took the circuit out and realize that it was ridiculously simple (from what I can see). So I was thinking if ...
2
votes
1answer
270 views

Produce loud noise for a security alarm

I would like to build a security alarm that just buzzes when a door opens. My question is can I use a speaker to generate a loud buzzing noise or I need something else like a piezo buzzer? If I can ...
0
votes
1answer
386 views

My ATTiny84 circuit works fine until I connect a piezo buzzer

I've got a mini-game coded with an ATTiny84, a shifter, 7 LEDs and two buttons, plus accompanying resistors. It works great! Until I connect a passive piezo buzzer, that is. Then the timings go off, ...
0
votes
3answers
2k views

How to make a piezoelectric transducer buzz louder?

I am trying to make a piezoelectric transducer buzz loudly, but have so far only been able to make it create a quiet hum. I have tried using a basic amplification circuit with an NPN, but this made ...