Buzzer order skills

Microbuzzer.com · Posted on 15-05-2009 by microbuzzer

Buzzer variety of types of specifications, order skills required to be aware of several parameters:

Voltage, current, drive, size, connection / fixed the way, of course, more importantly, want to be the voice of (the size of the sound pressure, frequency of high and low),

Operating voltage: electromagnetic buzzer-style, from 1.5 to 24V

Piezoelectric buzzer from 3V to 220V are possible, but the general piezoelectric or proposals of more than 9V voltage to obtain a greater voice.

Current consumption:

Electromagnetic buzzer in accordance with the different voltages, from dozens to hundreds of mA are, the piezoelectric buzzer on the power of more than a few mA can be a normal action, and the buzzer starts , the moment the need to consume about three times the current;

Driving Mode:

Electromagnetic and piezoelectric buzzer has two kinds of self-excited, as long as access to the DC (DC) can be audible, because the driver has built-in line at the buzzer, and because of the different principles of action, Electromagnetic buzzer to use 1 / 2 square wave to drive, the use of piezoelectric square in order to have better sound output.

Size:

Buzzer will affect the size of the volume size, the high and low frequency, electromagnetic 5mm from the smallest to the largest 25mm,

Piezoelectric from 12mm to 50mm or larger have.

Connection:

There are common pin (DIP), wire (Wire), SMD (SMD buzzer), piezoelectric-type stars were also big way lock screws.

Sound Pressure:

Buzzer often 10cm test distance as the standard, doubling the distance, probably attenuation 6dB, contrary to shorten the distance will increase twice as 6dB, Electromagnetic buzzer to achieve about 85dB / 10cm level, piezoelectric style buzzer can be done on a very loud, frequent alarms, most are made of piezoelectric buzzer. to the Part Number JIN Ming, the largest amount of electromagnetic buzzer;

Integrated buzzer, sealing the bottom of epoxy buzzer, buzzer split, did not seal at the bottom of plastic, about the general frequency of 2000, must not be too tin furnace.

Rated operating voltage:
1.5V, 3.0V, 3.6V, 5V, 9V, 12V, 24V.

Piezoelectric Piezo buzzer:

Diameter, 10mm, 12mm, 14mm, 16mm, 17mm, … .. 50mm specifications are many.

Rated the frequency of self-excited type, containing the lines, E external drive said buzzer (external drive)

Buzzer divided by the installation:

P = Pin type (needle inserted buzzer), and W-Wire (wire-type buzzer), SMD’s buzzer (patch-type buzzer).

Tags: Buzzer, order
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