Transmitter ya 10mW FM

~ Kutumiza kwa 10mW FM ~

-Gawo Loyamba-

Ma transmitter a FM awa ndi gawo loyamba kwa magawo atatu a 1 Watt FM Transmitter.

… Yasinthidwa kuyambira pa Okutobala 30, 2002


Kupeza Mapazi Anu

Ngati simunapangepo transmitter ya LPFM (yokhala ndi magetsi ochepa modutsa), chikhala chanzeru kuyamba ndi ntchitoyi ... kuti mumvetse zambiri zokhazo zomwe zikupanga kupanga wanu woyamba FM..ndiponso kuti mupeze 'manja -zomwe zidachitika. Ngakhale Transmter ya 10mW FM ingaoneke ngati yosavuta monga ena anganene, musapusitsidwe poganiza kuti zonse zikhala bwino. Mawu akuti 'zosavuta' mu ntchitoyi, amangotanthauza kuti pali zinthu zochepa polojekiti yonse poyerekeza ndi zigawo zina za LPFM. Liwu 'losavuta' silitanthauza kuti gululi lidzagwira ntchito bwino komanso labwino mukamaliza. Zingakhalebe zovuta kuti mayunitsi agwire bwino ntchito… kapena pa chifukwa… konse mutagulitsa zinthu zonse zomwe zili pagululo ndikuzimitsa. Mitundu yambiri imakhala kusewera wogwira ntchito mu vhf m'bwaloli. Wokwera amapita pafupipafupi, ndipo izi 'zimakhudzika' kwambiri. Ndapereka ndondomeko pang'onopang'ono pakupanga gawo la 10mW. Chofunikira kwambiri mu ntchitoyi ndikukhalabe choona ku chinthu chilichonse… ndiye kuti, m'malo mwake sayenera kuloledwa. Ndikupangira kuti mugwiritse ntchito chilichonse chomwe ndalemba ... osasochera nazo. Ngati mungatsatire njira yanga yodziwirira bwino yopangirayi, mwayi wanu wogwira ntchito kumapeto kwake udzakhala wokwera kwambiri. Ndipo ngati mupitiliza kukhala odekha pafupi nanu… mudzawona kuti gululi likuchita bwino koposa! Mukapangitsa kuti gawolo lizichita bwino komanso zomwe mumakonda ... mutha kuwonjezera gawo lachiwiri ... gawo la 200mw kenako kenako, lachitatu, lomwe ndi gawo la 7 watt. Ndikuganiza chisankho chanzeru ichi poti ndapanga zonse zitatu… ndipo kuyambira koyamba ndichinthu chabwino!


IMukudziwa kupanga ma LPFM ma transmitter ndipo mwachita nawo bwino, mungafune kungolumphira pa 10mW ndikuyamba ndi 200mW kapena wotchi 7 ... zonse zili ndi inu. Koma ndinganene, ngati amene wapanga ma transmit atatu awa: chikhala chanzeru kwambiri kuyambira pa chiyambi (ndiye kuti, kuyambira ndi 10mW unit), kenako konzani zosintha zina… ndiye mphunzitsi wabwino kwambiri padziko lonse lapansi!

So tsopano, mzanga, uli ndi zisankho zitatu za ma transmitti a FM omwe mungasankhe: The 3mW, 10mW kapena 200 Watt.

These atatu ma transmitter a FM onse ali patsamba lino. Chifukwa chake sindinapitenso patsogolo, ndimapereka ma pulojekiti operekera uthenga wa FM kwa iwo omwe asankha kuchita izi.

… Ndipo lolani kuti ntchitoyi iyambe!


Transmitter ya Milliwatt FM khumi

Tiyeni tiyambe…

TPCB yamtundu wake ndi mtundu womwewo wa kapangidwe kogwiritsidwa ntchito pa 7 Watt FM Transmitter. Onani zomwe chithunzi cha digito chitawomberedwa patsamba 7 la Watt. Onani pa chithunzichi ... zida zonse zomwe zimagulitsidwa pamkuwa ... zonse ziwiri ndi mkuwa zili mbali yomweyo ya PCB. Ndinaganiza zogwiritsa kalembedwe kameneka ngati kosavuta komanso kosavuta kusintha zinthu… m'miyezi yambiri yoyesera. Chifukwa chake, palibe mabowo omwe amayenera kubowoleredwa pa PCB, kupatula mabowo anayi okhawo. Mukayang'ana template ya 10mW PCB template m'munsimu, muli zigawo 12 zamkuwa (zametedwa mu lalanje), zomwe zimazunguliridwa ndi madera oyera. Madera oyera kumene ndi komwe kulibe 'kopala.' Umu ndi momwe muyenera kupanga PCB yanu. Ndakhala ndi zotulukapo zabwino kugwiritsa ntchito kalembedwe kameneka. Mukayamba kugwira ntchito, mungafune kupanga PCB ina ... yokhala ndi mabowo ... chilichonse chomwe mungafune. Koma lingaliro langa la 'mwamphamvu' ndikuti mumapanga PCB yoyamba "malinga ndi malangizo anga. Muyenera kuwonetsa chiwonetsero chabwino kumapeto!

Go patsogolo ndikusindikiza zolemba pamwambapa za PCB. Iyenera kukhala 91 mm ndi 50mm. Ngati sichoncho, tumizani chojambulachi ku pulogalamu yazithunzi ndikufinya ndi / kapena kutambasula mpaka muyeso woyenera utatha. Izi zikachitika, mutha kupitilizabe kupanga PCB yanu monga momwe ikuwonekeramu. Ndiloleni ndinenanso ... pali zilumba 12 zamkuwa (pomwe mumawona mtundu wa lalanje) pa template ili pamwambapa. Kuzungulira zisumbuzi ndi malo opanda kopanda (pomwe muwona mtunduwo). Ndondomeko yomwe ili pamwambapa iyenera kusinthidwa kwambiri momwe ingathere kuti mumvetsetse kalembedwe kanga.

When mwamaliza ndikumaliza PCB yanu yeniyeni 'yeniyeni,' poboweka bowo pomwe lalikulu laling'ono limakhala template. Kenako ingani 18 ya waya wamkuwa wolimba kudzera mu dzenje ndikugulitsa waya kumtunda woyandikana ndi kumbuyo kwa PCB. Ndiye kudula owonjezera. Izi zipitilira ndege ya pansi (yomwe ili kufupi ndi PCB) yofunikira pampata wakumbuyo wa PCB.

Ozomwe zachitika… mutha kupitiliza kuyambitsa ndikugulitsa zinthu zanu zonse pa PCB. Zonsezi zimagulitsidwa m'malo okhazikika 'okhazikika,' kupatula ma waya awiriwo. Kuti muwone komwe mbali zake zili pa PCB, ingoyang'anani pansipa…

Chowongolera Panjira

Jmumayeneranso nambala ya 'Chowongolera Chofikira' ndi chinthu chomwe chikufunsidwa mu 'Chida Chophatikizira'.

Tchati cha Chipinda

1A - 5.6K 1 / Watt Carbon Resistor1B - .001uF Ceramic Capacitor 13 - Ticker Air-Core Coil
2 - Ma Microphone a Electret 14 - 4.7pF Ceramic Capacitor
3 - 1uF Electrolytic Capacitor 15 - 5-30 Wosintha Capacitor
4 - 4.7K 1/2 Watt Carbon Resistor 16 - 1N914 Diode
5 - 47K 1/2 Watt Carbon Resistor 17 - 1uF Electrolytic Capacitor
6 - 1.2K 1/2 Watt Carbon Resistor 18 - PNP 2N2907 kapena MPS2907 Transistor
7 - 5.6K 1/2 Watt Carbon Resistor 19 - .001uF Ceramic Capacitor
8 - 100 Ohm 1/2 Watt Carbon Resistor 20 - 4.7K 1/2 Watt Carbon Resistor
9 - Chowongolera chotsogola ku Mphamvu yamagetsi 21 - 1uF Electrolytic Capacitor
10 - Antenna terminal 22 - NPN 2N3904 kapena MPS3904 Transistor
11 - Zowongolera zoyipa zamagetsi 23 - 22K 1/2 Watt Carbon Resistor
12 - Womangidwa Mwendo pa Air Core Coil

Kuphatikiza Zidziwitso pa Transmitter

L1 ndi kolumikizira mpweya wabwino. Ingodinani DINANI APA kuwona momwe L1 imapangidwira.

If uli ngati ine ndipo ulibe zida zoyesera, kupatula mita yamtunda wa watt ndi DVM, mutha kupeza kufalitsa komwe kungogwiritsidwa ntchito ndi wailesi ya AM / FM ndikusinthira ku FM… kenako pitani mpaka ku kutsika kocheperako… njira yonse kumanzere kwa kuyimba kwa wayilesi… yomwe ili pafupi ndi 87 Mhz… ndipamene ndinasintha ma coil kuti. Muyenera kuyesa izi popeza mawuwa sangangotulutsa pafupipafupi, komanso ogwirizana. Ngati panali gawo limodzi lokha lotumizira lomwe limabwera kuchokera ma frequency omwe mungafune kupitilira ... sibwenzi ndi vuto kupeza ... koma ndi main main sign ... pali signonic mbali iliyonse ya chachikulu. Zitha kukhala zokhumudwitsa kwambiri kujambula chizindikiro chimodzi 'chachikulu' chimenecho. Mutha kuganiza kuti muli ndi chizindikiro chachikulu, pomwe zenizeni ndi izi, mukukonzekera mtundu winawake wa zilembo zazikulu zazifupi. Ndalankhula ndi anthu zokhudzana ndi izi, ndipo adati nawonso apeza izi poyesa kugwiritsa ntchito siginecha yayikulu. Chifukwa chake kumbukirani izi ... chilichonse chomwe chingakupatseni mtunda woyambira ... kuti, mzanga, chikhale chizindikiro chachikulu (osati chowombera) mwatsatanetsatane. Zolimbitsa thupi ndi chipiriro zidzakhala manja anu othandizira!

Ma Microphone a Electret… Radio Shack imagulitsa maikolofoniyi ngati kulumikizana kwa ma terminal awiri ndi kulumikizana kwa ma term atatu. Gwiritsani ntchito kulumikizana kwachiwiri. Mbali yomwe ilumikizidwe ndi nyumba ya maikolofoni ndi mbali yosavomerezeka ndipo matendawa amapita pansi pa PCB. Ma terminal ena ndi abwino. Komanso, mukakhala pa Radio Shack ya chinthu ichi ndi zinthu zina zomwe zalembedwa pansipa, chingakhale chanzeru kutola pafupifupi mita imodzi ya 75 ohm chingwe cholowa. Ndi chingwe ichi mutha 'kukulitsa' kutalika kwa maikolofoni ya electret kotero kuti siyikhala pafupi kwambiri ndi zochitika. Ndili ndi dzanja langa mainchesi atatu, omwe amapita kunja ndi kozungulira ndipo amawoneka kuti amagwira ntchito bwino pofotokoza momveka bwino; osanenanso kuti mutu wanu umakhala kutali ndi mayunitsiwo kuti musawononge pafupipafupi (onani 'tank tank' pansipa).

2N3904 kapena MPS3904 Transistor… Transistor iyi itha kugulidwa pa Radio Shack. Fotokozerani za 'Maupangizidwe Akagwiritsidwe Kakuyenda' poyang'ana mwendo uliwonse wa transistor. Dulani miyendo yonse pa transistor mpaka 1/4 ya inchi musanagulitse.

2N2907 kapena MPS2907 PNP Transistor… Transistor iyi itha kugulidwa pa Radio Shack. Fotokozerani za 'Maupangizidwe Akagwiritsidwe Kakuyenda' poyang'ana mwendo uliwonse wa transistor. Dulani miyendo yonse pa transistor mpaka 1/4 ya inchi musanagulitse.

5-30pF Zosintha Capacitor… Ma radio Shack sakuperekanso izi. Mouser Electronics, kuno ku USA, ali nawo. Pitani patsamba la 7 la Watt FM Transmitter kuti muwone Nambala Yafoni Ya Mouser's. Ichi ndi chimodzi mwazida ziwiri zomwe zimapanga gawo la oscillating (lomwe limadziwika kuti 'tank tank'). Capacitor yosinthika ndikofunikira kuti isinthidwe pafupipafupi kufalitsa. Chingakhale chanzeru kumvetsetsa momwe kayendetsedwe ka thanki imagwirira ntchito ... popeza ndi capacitor yosinthasintha iyi, limodzi ndi ma coil oyambira omwe mungayesere ... kuti muthane ndi mayendedwe omwe mukufuna. Zidzasiyidwa kwa inu kuti muzimitsa siginecha yanu ndikulandila wolandila. Basi DINANI APA kuti mumvetsetse momwe mungasungire transmitter yanu mukangopanga ndikukonzekera 'kutembenuka' koyamba.

The 'taps' Air-Core Coil… Ichi ndi chipangizo chopangidwa ndi anthu ndipo ayenera kupangidwa ndi inu. Basi DINANI APA popanga coil. Ichi ndi chimodzi mwazida ziwiri zomwe zimapanga gawo la oscillating (lomwe limadziwika kuti 'tank tank'). Cholembera chofunikira ndichofunika kuti chisinthidwe chazomwe zimafalikira pafupipafupi. Chingakhale chanzeru kumvetsetsa momwe kayendetsedwe ka thanki imagwirira ntchito… chifukwa ndi iyi 'Tampo' Air-Core Coil, limodzi ndi 5-30pF Variable Capacitor, kuti muyesera ... kuti muthe kutsata pafupipafupi momwe mukufuna. Zidzasiyidwa kwa inu kuti muzimitsa siginecha yanu ndikulandila wolandila. Basi DINANI APA kuti mumvetsetse momwe mungasungire transmitter yanu mukangopanga ndikukonzekera 'kutembenuka' koyamba.

1N914 Diode… Chipangizochi chitha kugulidwa pa Radio Shack. Onani polarities pa diode. Cathode (ndiyo mbali yoyipa ya diode) imayamba kugwa.

4.7pF Yokhazikika Disk Capacitor... Ichi ndi chopanda polarized capacitor, kutanthauza kuti zilibe kanthu kuti mwendo uti umayikidwa kuti ayikidwe. Ingowonetsani kuti mwendo umodzi upita ku emitter ya MPS2907 ndipo mwendo wina umapita kwa wolanda MPS2907. Sungani mtunda wa miyendo yopitilira 1/8 wa inchi kwa transistor yomwe inanenedwayo.

Wotsutsa wa 27K… Wotsutsa uyu sadzapezeka pa Radio Shack. Chifukwa chake, gulani otsutsa a 5.6K ndi 22K ndipo muwaike mu PCB. Khwangwala amayandikira pafupi. Sindinazindikire kusintha kwa mawu panjira iyi.

The Antenna… .. Ndagwiritsa ntchito tinyanga tating'ono tating'ono mpaka tanu ndipo ndidatulutsa nayo bwino. Mutha kugula ma antenna anayi kapena asanu a telescopic kuchokera ku Radio Shack. Chosankha china chitha kukhala chowongolera ma malaya awiri owongoka kenako ndikudula mpaka 5 mapazi.


ndipo pomaliza ...

Once mutamaliza kupanga chipangizochi, chakonzeka kuti chitha kuzungulira 88 Mhz. Izi zikutanthauza kuti uku ndikumapeto kotsika kwa msambo wa FM. Pezani wolandila FM wolandila ndi kuyeseza pafupi 88 MHz. Kenako ikani wayilesi ya FM wolandila pafupifupi mita 50 kuchokera pa transmitter. Sinthani voliyumuyo kukhala hafu pa wolandilayo. Kenako yambani kusintha capacitor yanu yosinthira pa transmitter, pomwe mukuyilankhula, kuti musankhe mawu anu polandila. Mukazindikira chizolowezi chomva mawu anu pafupipafupi, ndipo mukukhutira ndi momwe zimamvekera, bweranani ndi bwenzi lanu ndikupita kudzikolo kapena gawo lililonse lotseguka ndikuwona momwe gawo lingadutsire. Mumakhala ndi wotumiza mawu polankhula maikolofoni ndipo mnzanu amakuchokerani pang'onopang'ono kutali ndi inu kwinaku akumulandirani. Muuzeni kuti akweze mkono wake ... pamene mawu ako satha kumveka. Kenako mudzakhala ndi lingaliro lowonekera bwino momwe gawo lanu lipitirire. Kumbukirani kusungitsa zotchinga za mtundu uliwonse kuchokera ku 'mzere wakuwona' mogwirizana ndi wotumiza ndi wolandila. Mundiponyere kalata ndikuuzeni momwe zinthu zayendera. Ndikukufunirani zabwino zonse. Ndipo mzanga ...

... lolani kuti ntchitoyi iyambike!