Thursday, December 1

Piezo Audio Transducer VS Piezo Audio Buzzer


There are two types of piezo buzzers - transducers and indicators. Transducers consist of a casing, a piezoceramic element and a terminal. In order to operate a transducer, the user must send a square wave signal to the buzzer. Indicators consist of a casing, a piezoceramic element, a circuit board and a terminal. In order to operate an indicator, the user must send the buzzer a specified DC voltage.
Piezo Audio Transducer
 HP1770A  SERIES:    


 Type
UNIT
HP1770A
*Min. Sound Output at 10cm
dB
85
Rated Voltage
 Vp-p
9
Operating Voltage
Vp-p
1~30
Resonant Frequency
Hz
4000±500
*Max. Current Consumption
mA
2
Capacitance at 1,000HZ
pF 
15000±30%
Operating Temperature 
°C
 -20~+70
  Storage Temperature
  °C
-30~+80
  Weight
  g
1.3

Value applying at rated voltage
DIMENSIONS     Unit:mm     Tolerance:±0.5


--------------------------------------------------------------------------------
Piezo Buzzer, Piezo audio indicators

HP2310X   SERIES:    

 Type
UNIT
HP2310AX
HP2310BX
*Min. Sound Output at 10cm
dB
85
85
Rated Voltage
 VDC
12
24
Operating Voltage
VDC
3~24
12~36
Resonant Frequency
Hz
3500±500
3500±500
*Max. Current Consumption
mA
12
12
Tone Nature

Continuous
Operating Temperature 
°C
 -20~+70
  Storage Temperature
  °C
-30~+80
  Weight
  g
6


 




If you interesting this .You can contact us : http://www.piezo-indicator.com



Wednesday, November 30

Piezo vs. Magnetic Buzzers

Piezo Buzzer Characteristics

  • Wide operating voltage: 3~250V
  • Lower current consumption: less than 30mA
  • Higher rated frequency
  • Larger footprint
  • Higher sound pressure level
HP4216AXW  SERIES:    

 Type
UNIT
HP4216AXW12
HP4216AXW24
*Min. Sound Output at 10cm
dB
100
105
Rated Voltage
 VDC
12
24
Operating Voltage
VDC
3~20
8~30
Resonant Frequency
Hz
2900±500
3100±500
*Max. Current Consumption
mA
150
150
Tone Nature

       Continuous
     Continuous
Operating Temperature 
°C
 -20~+70
  Storage Temperature
  °C
-30~+80
  Weight
  g
18

Value applying at rated voltage 
DIMENSIONS     Unit:mm     Tolerance:±0.5



Magnetic Buzzer Characteristics

  • Narrow operating voltage: 1~16V
  • Higher current consumption: 30~100mA
  • Lower rated frequency
  • Smaller footprint
  • Lower sound pressure level

HCM16X   SERIES:   



 Type
 HCM1606X
HCM1612X
 Rated Voltage        (V)
  6
12
 Operating  Voltage  (V)
  4~8
8~15
 Rated Current     (MA)
  < 30
< 30
 Sound Output at 10cm (dB)
> 85
> 85
 Resonant Frequency  (Hz)
2300  ±300
2300 ±300
 Response Time     (ms)
    < 50
< 50
 Operating Temperature  (C)   
-25~+70 
-25~+70    
 Storage  Temperature  (C)
    -30~+80
 -30~+80  
  Weight                (g)
   7
7

Value applying rated voltage (DC)

DIMENSIONS     Unit:mm     Tolerance:±0.5













If you interesting this .
You can contact us : 
http://www.piezo-indicator.com/




What is Piezo Buzzer,Piezo audio indicator ?

The heart of piezo buzzers are a piezoelectric ceramic plate. Piezoelectric ceramics generate electricity when they experience mechanical force and, more important to a buzzer’s function, create force when exposed to an electric field. When the ceramic experiences an alternating voltage, the plate extends and shrinks. It is glued to a fixed metal plate so these forces cause the ceramic to flex, creating the buzzing sound.


If you interesting this .You can contact us :  http://www.piezo-indicator.com/



HP3025XW  SERIES:    


 Type
UNIT
HP3025AXW
HP3025BXW
*Min. Sound Output at 10cm
dB
90
90
Rated Voltage
 VDC
12
12
Operating Voltage
VDC
3~20
3~20
Resonant Frequency
Hz
3500±500
3500±500
*Max. Current Consumption
mA
10
10
Tone Nature

Continuous
Pulse 1-4Hz
Operating Temperature 
°C
 -20~+70
  Storage Temperature
  °C
-30~+80
  Weight
  g
13


Value applying at rated voltage 
DIMENSIONS     Unit:mm     Tolerance:±0.5













What is magnetic buzzer ? Magnetic buzzer HCM1212X ,HCM1205X

Magnetic buzzers use a coil wrapped around a pole. A metal plate is mounted a short distance from one end of the pole. The coil creates a magnetic field in the pole which attracts the plate, but since the plate is fixed the center flexes towards the pole. As the electrical signal varies, the magnetic field varies and the plate vibrates.


If you interesting this .You can contact us :http://www.piezo-indicator.com/



HCM12X  SERIES:        



 Type
 HCM1201X
 HCM1203X
 HCM1205X
HCM1212X
 Rated Voltage        (V)
  1.5
  3
  5
12
 Operating  Voltage  (V)
  1.3~2
  2~5
  3~7
8~15
 Rated Current     (MA)
  < 30
  < 30
  < 30
< 30
 Sound Output at 10cm (dB)
    > 80
    > 80
> 85
> 85
 Resonant Frequency  (Hz)
2300 ± 400
2300 ± 400
2300  ±300
2300 ±300
 Response Time     (ms)
< 50
< 50
    < 50
< 50
 Operating Temperature  (C) 
-10~+50
-10~+50
-25~+70 
-25~+70    
 Storage  Temperature  (C)
  -15~+60
  -15~+60
    -30~+80
 -30~+80  
  Weight                (g)
  2
  2
   2
 2
Value applying rated voltage (DC)



DIMENSIONS     Unit:mm     Tolerance:±0.5







Piezo buzzer Vs. Magnetic Buzzers

Buzzers are a simple and inexpensive way to allow your device to make simple sounds ranging from a click when a key is pressed to a warning tone when readings fall outside of safe ranges. We offer two technologies, piezo and magnetic buzzers, and
it’s important to understand the benefits of each before deciding on the right choice for your device.
How They Work
The heart of piezo buzzers are a piezoelectric ceramic plate. Piezoelectric ceramics generate electricity when they experience mechanical force and, more important to a buzzer’s function, create force when exposed to an electric field. When the ceramic experiences an alternating voltage, the plate extends and shrinks. It is glued to a fixed metal plate so these forces cause the ceramic to flex, creating the buzzing sound.
Magnetic buzzers use a coil wrapped around a pole. A metal plate is mounted a short distance from one end of the pole. The coil creates a magnetic field in the pole which attracts the plate, but since the plate is fixed the center flexes towards the pole. As the electrical signal varies, the magnetic field varies and the plate vibrates.
Which Is Better?
The preferred solution depends on your device’s needs. Piezo buzzers can operate at much higher voltages than magnetic buzzers can. For the same voltage piezo devices use less current. Finally, piezo buzzers put out higher sound pressure than magnetic buzzers. However magnetic buzzers have one big advantage important to manufacturers: size.
Magnetic buzzers have a much smaller footprint than equivalent piezo buzzers. This is a critical feature in mobile devices. Consumers demand smaller and smaller phones, tablets, and other electronics and many modern devices simply can’t spare the room a piezo buzzer needs. A microwave oven might work fine with a piezo buzzer but a device meant to go into a pocket is going to need a magnetic buzzer.
If you are still unsure, then contact us to talk about your device’s needs. 

Tuesday, October 11

USB Mosquito Kill Lamp with led


USB Mosquito Kill Lamp  with led EMK-01U

USB Mosquito Killer Lamp Photocatalyst Flycatcher Zapper with 6 LED Night Light Insect Fly Pest Killing
5V USB bulb light indoor electric mosquito insect killer with led


1.Physical principles
1.Using special led light to attract mosquitoes
2.Through a powerful fan suction the mosquitoes into the mosquito box
3.then mosquitoes will death because of air dried .
2.Applicability
It can be widely used in crop farming, livestock breeding industry, schools, hospitals, parks, urban greening, garden villas.
3.Advantage
These product series can efficiently trap and kill more than 30 kinds of harmful insects, such as mosquitoes, armyworms, moths, pine sawyer beetles, beetles, mole crickets, locusts, white-winged, and flying ants

USB mosquito killer lamp
1)voltage:5V,USB cable input.220V/5V.
2)power:2W
3)effect area:20SQM(square meter)
4)6pcs purple Leds+fan
5)size:160*200mm(H)6:NW:0.55kg

If you interesting this .You can contact us :
 
http://www.solar-mole-repeller.com