Posted on 17-05-2009 by microbuzzer
Electromagnetic buzzer internal composition:
1. Waterproof sticker 2. Spools 3. Coil 4. Magnet 5. Base 6. Pin 7. Shell 8. Core 9. Sealing glue 10. A small metal plates 11. Vibrating membrane
12. Circuit board
The working principle of passive electromagnetic buzzer:
Ac signal through the bypass line in the stent in the stent core package produce a column [...]
Tags: Buzzer, Magnetic, Passive
Posted in TECHNOLOGY
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Posted on 29-12-2008 by microbuzzer
Magnetic field on the current force. Current yuan | d | outer magnetic field B have been for the force F = BI | d | Ampere force direction by | d | and B by the right hand rule spiral determined the size of Ampere force F = BI | d | sina, in [...]
Tags: Magnetic, size, small
Posted in TECHNOLOGY
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Posted on 03-12-2008 by microbuzzer
ø9×4mm Magnetic Buzzer Data Sheet
Type HC09001A HC09003A HC09005A
Rated Voltage(V) 1.5 3 5
Operating Voltage(V) 1～2 2～5 4～7
Rated Current(mA) ≤80
Coil Resistance(Ω) 5.5±1 25±4 40±4
◎Coil Impedance(Ω) 10 40 55
★Sound Output at 10cm(dB) ≥80 ≥82 ≥85
Rated Frequency(Hz) 2731
Operating Temp.(℃) -40～+85
Storage Temp.(℃) -40～+85
Housing Material Noryl SE1
Weight (g) 1
Tags: 4, 9, Buzzer, Magnetic, mm, Specification
Posted in BUZZER SPECIFICATION
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Posted on 03-12-2008 by microbuzzer
ø6.5×4.5mm magnetic buzzer data sheet
Rated Voltage(V) 3.6
Operating Voltage(V) 2～5
Rated Current(mA) ≤80
Coil Resistance(Ω) 18±2
Output S.P.L(dB) ≥75
Rated Frequency(Hz) 3200
Operating Temp.(℃) -20～+60
Storage Temp.(℃) -30～+70
Housing Material PPO
Weight (g) 0.3
Tags: 4.5, 6.5, Buzzer, Magnetic, Magnetic Buzzer, mm, Specification
Posted in BUZZER SPECIFICATION
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