用35毫米的Piezo抢答器的硬盘

Piezoelectric Buzzer for External Drive - Passive Circuit (Diameter 35mmby Height 9mm, 1100Hz, 3 15Vac) 1, Have room to negociate about price; 3, New design mold and formula; 4, Control each procedure. Main feature of piezo buzzer/ piezo transducer: -Emit a clear penetrating sound; -Can be driven directly Ics; -Low frequency and multi-freqency capability. Piezo Buzzer/ TransducerApplication: (Acoustic/ audiocomponent: Piezoceramics buzzer;piezo sound generator) -Telephone ringer; -Copier, printer; -OA equipment; -White goods; -Fan heater, toys, alarm. The mainattribute charactersfor Piezo buzzer/ piezo transducer, as follows Material: Piezoceramics; ABS/PPOABS/PPO/Al Configuration:Mounting ears, or not Connection terminal:Pin, Wire, or SMD Product types: External drive, Self drive/ Self modulating(With/out Circuit Built in) The main parameter values of piezo buzzer:Handling Notice: 1. Take care to protect operating circuit surge voltage resulting excessive force falling shock temperature change. 2. If DC voltage is applied to the competent silver migration may occur please pay full attention to avoid subjecting the component to DC voltage for long periods. 3. The resistor should be used as shown in applied circuits, suitable resistance value should be chosen. 4. Avoid excessive pulling lead wire because wire may break or soldering point may come off. 5. Piezoelectric Sounder are driven by an input frequency, the givenfrequency characteristics can be obtained when applying square wave or sine wave. The users must know the facts that the characteristics of frequency may be quite change or bad sound in different shapes with the applied various waves, like 1/2 duty spuare wave(Vo-p) or the other wave. When users only have 1/2 duty square wave (Vo-p) use resistor or inductance parallel with buzzer together. Soldering and Mounting: -Please do not cover the hole with tape or other obstacles, as this will produce irregular operation. Dongguan Sweet Sound Electronics Company Limited (SWT), a Hong Kong independently owned company was established in 1991 . Sweet Sound is a professional enterprise to research , produce and sell various kinds of acoustic components, mainly piezoceramics elements , piezoelectric buzzers , piezoelectric ultrasonic transducers and piezoelectric horns , electro-magnetic buzzers, piezo speakers and micro speakers. The monthly output is 20 million pieces . Nowadays , it has about 500 employees , 6000 square meter of manufacturing plant , and 200 sets of production and test facilities and instruments involving large scale automatic tunneling furnace. Sweet Sound has passed the ISO9001:2008& ISO14001:2004 and RoHS & REACH. There are 40 senior engineers working in our plant, have gained leading technical competence in design and production of piezoelectric material and acoustic components. Our products have been widely appliedin various kinds of alarms, satellite receivers , microwave ovens, computers, calculators, digital cameras, electronic dictionaries, ultrasonic planimeters, medical devices, micro-displacement positioner, high voltage generator, facsimile machines, telephones, electronic toys and clocks, etc. Our products and services have won a very good reputation foralmost two decades. Contact person: Kevin Wang,Sherry Tan; Tel. No.:+86-0769-22620160; Website1:www.sweetsound.cn;Website 2: sweetsound.en.alibaba.com. Following are our major cooperative partners: