Kodi Magnetic Buzzer ndi Chiyani? Buku Lonse la Mainjiniya ndi Ogula
Kuyankha mokweza ndikofunikira kwambiri pakupanga zida zamagetsi m'ma dashboard a magalimoto, matenda azachipatala, zamagetsi zamagetsi, ndi mapanelo a alamu a mafakitale. Pakati pa zida zamagetsi, ma buzzers a maginito ikadali yankho lofunikira kwa magulu a uinjiniya omwe akufuna kupanga ma toni odalirika pamagetsi otsika ogwirira ntchito komanso malo ocheperako a PCB.
Kaya mukupanga gulu la PCB lamphamvu kwambiri kapena mukufuna njira zina zosinthira mzere wopangira womwe ulipo, kumvetsetsa fizikisi ya magnetic buzzer, momwe galimoto imayendera, ndi magawo aukadaulo kumatsimikizira kutulutsa kwamphamvu kwa mawu popanda mphamvu yosafunikira.
1. Kodi Magnetic Buzzer Imagwira Ntchito Bwanji?
Buzzer ya maginito imagwira ntchito motsatira mfundo za electromagnetic induction. Mkati mwa nyumba ya pulasitiki, zinthu zinayi zazikulu zamkati zimayambitsa kupanga mawu:
Pamene chizindikiro chamagetsi chosinthana (nthawi zambiri mafunde a sikweya) chikudutsa mu coil, chimapanga mphamvu ya maginito yosinthasintha. Mphamvu yamagetsi iyi imakoka ndikutulutsa diaphragm yachitsulo mosinthasintha pa liwiro loyendetsa—nthawi zambiri mozungulira 2,000 Hz mpaka 2,700 HzDiaphragm yogwedezeka imakanikiza mofulumira mamolekyu a mpweya wozungulira, zomwe zimasintha mphamvu zamagetsi kukhala mawu omveka bwino komanso omveka bwino.
2. Magnetic vs. Piezoelectric Buzzers: Kusiyana Kofunika Kwambiri
Kusankha pakati pa ukadaulo wa maginito ndi piezo kumadalira makamaka mphamvu yamagetsi yamagetsi yomwe ilipo, kuchuluka kwa ma target, ndi malire a malo omwe ali pa bolodi lanu.
| Chizindikiro chaukadaulo | Ma Buzzers a Magnetic | Ma piezoelectric Buzzers |
|---|---|---|
| Ma Voltage Range Ogwira Ntchito | 1.5V mpaka 12V DC (Yabwino kwambiri pa ma circuits otsika mphamvu). | 3V mpaka 30V+ DC (Imafuna ma voltage okwera kwambiri). |
| Kugwiritsa Ntchito Pakali pano | Pamwamba (~30mA mpaka 100mA). | Yotsika kwambiri (~2mA mpaka 10mA). |
| Kuchuluka kwa Ma Resonant | Yotsika (~2,000 Hz - 2,700 Hz, kamvekedwe kofunda ka mawu). | Pamwamba (~3,000 Hz – 4,000 Hz, kamvekedwe kakuthwa kwambiri). |
| Chidindo cha mapazi / Mbiri | Kutalika kochepa, zosankha zazing'ono za mainchesi. | Kukula kwake ndi kwakukulu, kapangidwe ka ma disc osalala. |
3. Transducer (Kuyendetsa Kwakunja) vs. Chizindikiro (Kuyendetsa Kwamkati)
Mukayang'ana ma datasheet a zigawo, samalani kwambiri ngati gawolo lagawidwa ngati chosinthira maginito kapena chizindikiro cha mkati:
4. Magawo Ofunika Kwambiri pa Uinjiniya wa PCB ndi Kugula
Kuti mupewe kusokoneza mawu kapena kuwonongeka kwa zigawo zisanayambe, yang'anani magawo awa poyesa zitsanzo:
Mayankho Odalirika a Acoustic ndi HYDZ Electronics
Kupeza zida zokhazikika zamagetsi ndi mawu kumafuna kulondola kokhazikika kwa coil winding komanso kulimba kwa diaphragm. Zipangizo Zamagetsi za HYDZ (Jiangsu Huayu Electronics Co., Ltd.) ndi kampani yodziwika bwino yopanga zida zamagetsi zazing'ono zamagetsi zomwe zimagwiritsidwa ntchito m'misika yapadziko lonse lapansi.