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參數(shù)資料
| 型號： | KBS-20DB-4A-22 |
| 廠商： | AVX Corporation |
| 文件頁數(shù)： | 21/22頁 |
| 文件大小： | 0K |
| 描述： | BUZZER PIEZO 4KHZ 20MM |
| 標準包裝： | 250 |
| 系列： | KBS, Kyocera |
| 驅動器電路： | 傳感器，外部驅動 |
| 技術： | 壓電 |
| 輸入類型： | 峰值-峰值信號 |
| 電壓 - 額定： | 10Vp-p |
| 頻率： | 4kHz |
| 聲壓級： | 70dB @ 10V，30cm |
| 可清洗： | 無 |
| 安裝類型： | 底座安裝 |
| 端子： | 導線引線 |
| 尺寸/尺寸： | 圓形 - 23.00mm 直徑 x 4.40mm H |
| 包裝： | 散裝 |
| 電容 @ 頻率： | 17000pF @ 4kHz |
7
Piezoelectric Acoustic Generators
Oscillation Type Circuits
A Piezo Transducer with a feedback tab makes the circuit
oscillate without inductors and capacitors. The number of
components is reduced and it is possible to generate from a
sine wave to a trapezoidal wave.
V
cc
Current
Frequency
155.V
8.2mA
2.55kHz
125.V
6.4mA
2.55kHz
595.V
4.6mA
2.55kHz
565.V
3.0mA
2.55kHz
54.5V
2.0mA
2.55kHz
535.V
1.1mA
2.55kHz
3-Terminal Buzzer Type
Vcc
R2
R1
Q1
BZ
L
In order to increase the sound pressure level, a coil can
be added to the circuit.
IC Type
Vcc
20k
330k
Q1
BZ
L
1k
NOTE: Wherever possible, the piezo devices should be
capacitive coupled to avoid permanent DC bias and possible
long term damage.
R
1
R
2
CBZ
It is easy to build this circuit by using CMOS inverters,
such as MC14049, and MC14069. The oscillation frequency
is in proportion to 1/R
2
C.
R
1
R
2
CBZ
R
3
INPUT
It is easy to do on-off oscillation by using a CMOS
NAND gate such as MC14011. When the input terminal is
high, the transducer works. When the input terminal is low, it
stops.
This is an example of a circuit that will generate various
sounds using one MC14069. The frequency determined by
R
2, C1 oscillates 1kHz to 5kHz and 2 times the Vcc is applied
to the transducer as V
pp.
R1
10k
BZ
R3
R6
220k
SW
VCC = 9
R7
220k
1.5k
1
2
3
R4
10k
R5
30-50k
+
R2
30-50k
C1
0.0067
F
C2 = 1
F
R
5, C2 determines the on and off intervals. It is variable
in the range of 0.1 to 3 seconds. By changing the switch
position, different sounds are generated.
Position 1:
continuous sound
Position 2:
2 different frequencies
Position 3:
interrupted sound
NOTE: Please investigate in detail to confirm that you will
not be in violation of the patents of others when using the
above circuit examples in volume production.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| KBS-20DB-4P | 制造商:KYOCERA Corporation 功能描述:KBS-20DB-4P |
| KBS-20DB-4P-0 | 功能描述:音頻指示器及警報器 AUDIO BUZZERS RoHS:否 制造商:PUI Audio 產(chǎn)品:Indicators 聲壓級:85 dB 音調:Continuous 頻率:2300 Hz +/- 300 Hz 電壓額定值:5 VDC 電流額定值:30 mA 端接類型: 直徑:12 mm 安裝:Through Hole |
| KBS-20DB-4P-0 | 制造商:AVX Corporation 功能描述:AUDIO TRANSDUCER |
| KBS-20DB-5A | 功能描述:音頻指示器及警報器 5KHz 75dB 10nF 30% RoHS:否 制造商:PUI Audio 產(chǎn)品:Indicators 聲壓級:85 dB 音調:Continuous 頻率:2300 Hz +/- 300 Hz 電壓額定值:5 VDC 電流額定值:30 mA 端接類型: 直徑:12 mm 安裝:Through Hole |
| KBS-20DB-6P-2 | 制造商:AVX Corporation 功能描述: |
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