Resistor e tsitsitseng: Mefuta, Litlhaloso, le Likopo ho PCB Design

1. Selelekela

Resistor e tsitsitseng ke karolo ea elektroniki e sa sebetseng e nang le boleng bo reriloeng esale pele ba khanyetso bo lulang bo sa fetohe nakong ea ts'ebetso. Ho fapana le li-resistor tse feto-fetohang, khanyetso ea resistor e tsitsitseng ha e fetohe ka ho feto-fetoha ha motlakase, liphetoho tsa mocheso ka har'a sebaka sa eona se lekantsoeng, kapa liphetoho tsa kantle. Likarolo tsena li emela likarolo tse sa sebetseng tse sebelisoang haholo lipotolohong tsa elektroniki, tse hlahang hoo e batlang e le moralo o mong le o mong oa PCB ho tloha ho lisebelisoa tsa elektroniki tsa bareki ho ea ho litsamaiso tsa taolo ea indasteri.

Litšebelisong tse sebetsang, li-resistor tse tsitsitseng li sebeletsa mesebetsi ea bohlokoa ho kenyeletsoa ho fokotsa hona joale, karohano ea motlakase, ho khetholla matšoao, ho bapisa impedance le ho sefa. Ho utloisisa mefuta le litlhaloso tsa resistor tse tsitsitseng ho nolofalletsa baenjiniere ho etsa likhetho tse nang le tsebo tse amang ka kotloloho ts'ebetso ea potoloho, tsamaiso ea mocheso le botsitso ba nako e telele.

2. Resistor e Tsitsitseng ke Eng?

Lentsoe "lokisitsoeng" le bontša hore boleng ba ho hanyetsa bo thehiloe nakong ea tlhahiso 'me bo ke ke ba fetoloa ke mosebedisi. Tšobotsi ena ea mantlha e khetholla li-resistance tse tsitsitseng ho tloha ho potentiometers, rheostats, le lisebelisoa tse ling tse fapaneng tsa ho hanyetsa.

Lisebelisoa tse tsitsitseng tsa resistor li na le mesebetsi e mengata ea potoloho:

• Moeli oa hona joale - E sireletsa li-LED, li-IC, le likarolo tse ling tse bonolo ka ho laola phallo ea hona joale.

• Karohano ea motlakase - E theha marang-rang a karohano bakeng sa ho lokisa matšoao le tlhahiso ea motlakase oa litšupiso.

• Ho tsitsisa leeme - Ho beha libaka tse nepahetseng tsa ts'ebetso bakeng sa li-transistors le li-amplifier tse sebetsang.

• Ho bapisa impedance - E fana ka pheletso ea mola bakeng sa litsela tsa phetisetso ea dijithale le RF tse lebelo le holimo.

Sebopeho sa motheo se na le thepa ea substrate, ntho e hanyetsanang, lesela le sireletsang, le liteishene tsa motlakase kapa li-lead. Lintho tse hanyetsanang - ebang ke sebopeho sa carbon, filimi ea tšepe, metal oxide, kapa terata - e khetholla litšobotsi tsa motlakase tse kenyelletsang mamello, mocheso oa mocheso, ts'ebetso ea lerata le matla a ho sebetsana le matla.

3. Mefuta e tsitsitseng ea Resistor ka Boitsebiso

Li-Resistors tsa Carbon Composition

Lihanyetsi tsa khabone li kopanya likaroloana tsa carbon le sekontiri sa ceramic ho etsa ntho e hanyetsang. Likarolo tsena li fana ka litšenyehelo tse tlase tsa tlhahiso le bokhoni bo botle ba ho monya surge. Leha ho le joalo, li bonts'a lerata le batlang le le holimo la motlakase, mocheso o fokolang oa mocheso o nang le litekanyetso tse tloaelehileng tsa TCR tsa -200 ho + 800 ppm / ° C, le khanyetso e kholo ea nako e telele.

Meralo ea sejoale-joale ea PCB ha e hlalose mefuta ea sebopeho sa khabone ntle le lits'ebetso tse ikhethileng tsa ts'ireletso moo litšoaneleho tsa bona tsa nakoana tsa ho monya li fana ka boleng.

Li-Resistors tsa Lifilimi tsa Carbon

Theknoloji ea filimi ea carbon e kenya lesela le tšesaane la khabone holim'a substrate ea ceramic, ebe e khaola groove ea helical ho theha boleng ba ho hanyetsa. Kaho ena e fana ka botsitso bo betere ho feta mefuta ea sebopeho sa khabone, e nang le mamello e tloaelehileng ea ± 5% le litekanyetso tsa TCR ho pota ± 250 ppm/°C.

Ho hanyetsa ho pharaletseng ho tloha ho li-ohm tse 'maloa ho ea ho li-megohm tse' maloa, ho kopantsoe le theko e tlaase, ho etsa hore lik'habone tsa filimi tsa carbon li ratoe ka kakaretso ea lisebelisoa tsa elektronike tsa bareki moo litlhoko tse nepahetseng li leka-lekaneng.

Metal Film Resistors

Lisebelisoa tsa tšepe tsa tšepe li sebelisa likarolo tse tšesaane tsa alloy ea nickel-chromium e kentsoeng holim'a li-substrates tsa ceramic. Theknoloji ena e fana ka litšoaneleho tse phahameng tsa ts'ebetso ho kenyelletsa lerata le tlase la motlakase, mamello e thata ho fihla ho ± 0.1%, le botsitso bo botle ba mocheso o nang le litekanyetso tsa TCR tse tlase ho ± 25 ppm/°C.

Khanyetso e tsitsitseng holim'a mocheso le nako e etsa hore filimi ea tšepe e be khetho e khethiloeng e sa fetoheng bakeng sa li-circuits tsa tekanyo e nepahetseng, li-amplifiers tsa lisebelisoa, marang-rang a motlakase oa litšupiso, le lits'ebetso tsa ts'ebetso ea matšoao a analog.

Metal oxide Resistors

Bahanyetsi ba filimi ea Metal oxide ba sebelisa tin oxide kapa lisebelisoa tse tšoanang ho etsa ntho e hanyetsanang le eona. Likarolo tsena li ipabola libakeng tse nang le mocheso o phahameng 'me li bontša khanyetso e babatsehang ho maemo a mangata. Mohaho o matla o mamella ho phahama ha motlakase ka nakoana ntle le tšenyo e sa feleng.

Likopo li kenyelletsa meralo ea phepelo ea motlakase, lipotoloho tsa taolo ea makoloi, le lisebelisoa tsa indasteri moo ho ts'epahalang nako e telele tlasa maemo a thata a ts'ebetso ho bohlokoa.

Li-Resistors tsa Wirewound

Lisebelisoa tsa wirewound li na le terata ea ho hanyetsa, eo hangata e leng alloy ea nickel-chromium, e pota-potileng motheo o sireletsang. Kaho ena e nolofalletsa ho sebetsana le matla a phahameng ho tloha ho li-watts tse 'maloa ho ea ho li-watts tse makholo, tse kopantsoeng le ho nepahala ho babatsehang le botsitso.

Moeli o ka sehloohong ke inductance ea bohlokoa ea likokoana-hloko ka lebaka la mohaho o kopantsoeng oa terata, o thibelang ho sebelisoa lipotolohong tse phahameng haholo. Li-resistors tse tsitsitseng tsa Wirewound li fumana lits'ebetso ho lisebelisoa tsa elektronike tsa matla, libanka tsa thepa, li-sensing tsa hona joale, le li-divider tse nepahetseng tsa motlakase moo DC kapa ts'ebetso e tlaase ea maqhubu e hlokahalang.

4. Mefuta ea Pakete e tsitsitseng ea Resistor

Ka-Hole Resistors

Li-resistors tsa Axial through-hole li na le 'mele oa cylindrical o nang le likhoele tsa terata ho tloha pheletsong e' ngoe le e 'ngoe. Likarolo tsena li kenya ka likoti tse pentiloeng ho PCB mme li hloka solder ea wave kapa solder ea letsoho.

Liphutheloana tse nang le lesoba li ipabola lits'ebetsong tsa matla a phahameng ka lebaka la phallo e phahameng ea mocheso ka lithapo le substrate ea PCB. Li boetse li fana ka matla a mochini bakeng sa lits'ebetso tse tlas'a vibrate kapa khatello ea 'mele.

Li-Resistors tse tsitsitseng tsa SMD

Li-resistors tsa Surface Mount li laola kopano ea sejoale-joale ea PCB, e fumanehang ka boholo bo lekanang ho kenyelletsa 0201, 0402, 0603, 0805, 1206, le liphutheloana tse kholoanyane. The compact footprint e etsa hore ho be le letsoalo le phahameng la likarolo, kopano ea boiketsetso ea khetho le sebaka, le ho fokotsa litlamorao tsa likokoana-hloko ka lebaka la bolelele bo bokhutšoane ba loto.

Bahanyetsi ba tsitsitseng ba SMD ba ntlafatsa ts'ebetso ea maqhubu a phahameng ka ho fokotsa inductance le capacitance. Melemo ea tlhahiso e kenyelletsa lipotoloho tse potlakileng tsa kopano, litšenyehelo tse tlase tsa kopano, le ho lumellana le ho beoa ha likarolo tse peli.

Precision Fixed Resistors

Lihanyetsi tse nepahetseng li fumana mamello ea ± 0.01% ho ± 0.1% ka litekanyetso tsa TCR tse ka tlase ho ± 5 ppm/°C. Likarolo tsena li sebelisa mekhoa e khethehileng ea tlhahiso le lisebelisoa ho boloka botsitso bo ikhethang.

Likopo li kenyelletsa mehloli ea hona joale e nepahetseng, litšupiso tsa motlakase tse nepahetseng haholo, marokho a lisebelisoa, le litekanyetso tsa ho lekanya moo ho nepahala ha litekanyetso ho leng bohlokoa.

Li-Resistors tse Tsitsitseng tse Matla a Phahameng

Bahanyetsi ba matla a phahameng ba sebetsana le ho felloa ke matla ho sa khaotseng ho tloha ho li-watts tse 'maloa ho isa ho li-kilowatts. Liphapang tsa kaho li kenyelletsa mefuta ea li-wirewound tse kentsoeng ka ceramic, meralo ea aluminium-housed chassis-mount, le li-resistors tsa lifilimi tse teteaneng holim'a li-substrates tse jalang mocheso.

Meralo ea phepelo ea motlakase, lilaoli tsa makoloi, li-resistors tsa braking, le lisebelisoa tsa tlhahlobo ea mojaro li itšetlehile ka likarolo tsena tse sa fetoheng bakeng sa ho qhala le ho laola matla.

Li-Resistors tsa Hona Joale

Li-resistant tsa hona joale kapa tsa shunt li na le litekanyetso tse tlase haholo tsa ho hanyetsa, hangata tse ka tlase ho 100 milliohms, tse nang le TCR e tlase haholo ho netefatsa tekanyo e nepahetseng ea hajoale ho pholletsa le mocheso. Likhokahano tsa Kelvin tse nang le li-terminal tse 'ne li tlosa liphoso tsa ho hanyetsa li-lead ho li-application tse nepahetseng.

Sistimi ea taolo ea betri, li-circuits tsa ho lekola matla, le litsamaiso tsa taolo ea makoloi li its'etleha ho lihanyetsi tse tsitsitseng tsa maikutlo a hajoale bakeng sa maikutlo le ts'ireletso.

5. Litlhaloso tsa Key Fixed Resistor

Boleng ba Khanyetso le Mamello

Boleng ba ho hanyetsa ka lebitso bo emela khanyetso e reriloeng maemong a tloaelehileng a litšupiso, hangata 25°C. Litekanyetso tse tloaelehileng tsa ho hanyetsa li latela mokhoa oa E-Series - E6, E12, E24, E96, le E192-e fanang ka sebaka sa logarithmic ho pholletsa le mefuta ea ho hanyetsa.

Tolerance e totobatsa ho kheloha ho hoholo ho tloha boleng bo tloaelehileng, ka litekanyetso tse tloaelehileng tsa ±20%, ±10%, ±5%, ±1%, ±0.5%, le ±0.1%. Khetho ea mamello e ama ka ho toba ho nepahala ha potoloho ho li-voltage divider, li-amplifier tse nepahetseng, le litsamaiso tsa tekanyo moo ho bapisa resistor le ho nepahala ho felletseng ho leng bohlokoa.

Palo ea Matla

Tekanyo ea matla e hlalosa ho qhalana ho hoholo ha matla ho tsoelang pele hoo resistor e tsitsitseng e ka ho sebetsanang ntle le ho feta mocheso oa eona o phahameng oa ts'ebetso. Litekanyo tse tloaelehileng li kenyelletsa 1/16W, 1/10W, 1/8W, 1/4W, 1/2W, le 1W bakeng sa lits'ebetso tse nyane tsa lets'oao.

Ho feta tekanyo ea matla ho baka khatello ea mocheso, botsofali bo potlakisang, ho hoholeha ha matla, 'me qetellong u hlolehe. Moralo o nepahetseng oa mocheso o hloka ho nyenyefatsa ho ipapisitse le mocheso o teng le maemo a phallo ea moea ho netefatsa ts'epo ea nako e telele.

Temperature Coefficient of Resistance

Palo e nepahetseng ea khanyetso ea mocheso e lekanya hore na khanyetso e fetoha joang ka mocheso, e hlahisoang ka likarolo ka milione ka degree ea Celsius. Hangata li-resistor tsa filimi ea tšepe li fihlella ±50 ho isa ho ±100 ppm/°C, ha mefuta ea ho nepahala e fihla ±5 ho isa ho ±25 ppm/°C.

Lisebelisoa tse hlokang ts'ebetso e tsitsitseng ho pholletsa le mocheso o feteletseng, joalo ka litšupiso tse nepahetseng tsa motlakase le li-circuits tsa lisebelisoa, li hloka lintlha tse tlase tsa TCR e tsitsitseng ea resistant ho fokotsa liphoso tse bakoang ke mocheso.

Matla a phahameng a ho sebetsa

Maqhubu a phahameng ka ho fetisisa a sebetsang a emela matla a phahameng ka ho fetisisa a tsoelang pele ao mochine o tsitsitseng o ka mamellang ntle le kotsi ea ho senyeha ha ka hare kapa ho senyeha. Tlhaloso ena e ba ea bohlokoa lipotolohong tse nang le matla a phahameng a motlakase moo motlakase o sebelisoang o ka fetang maemo a baloang ho latela litekanyetso tsa matla feela.

Baqapi ba PCB ba tlameha ho netefatsa litekanyetso tsa motlakase haholo-holo meralong ea phepelo ea motlakase, moo maemo a nakoana le mathata a ka behang bahanyetsi ka nakoana ho matla a holimo ho maemo a tloaelehileng a ts'ebetso.

Botsitso le Ts'ebetso ea Lerata

Botsitso ba nako e telele bo tšoaea ho hoholeha ha khanyetso ka nako e telele ea ts'ebetso, e susumetsoang ke ho palama baesekele ea mocheso, ho pepeseha ha mongobo, le khatello ea boima. Filimi ea tšepe le li-resistors tse tsitsitseng tsa wirewound li bonts'a botsitso bo phahameng ha bo bapisoa le mefuta e thehiloeng ho carbon.

Lerata la motlakase le fapana haholo le theknoloji ea resistor. Lisebelisoa tsa tšepe tsa tšepe li hlahisa lerata le futhumetseng le le feteletseng, e leng se etsang hore e be tse loketseng meralo ea amplifier e nang le lerata le tlase le li-circuits tsa tekanyo e nepahetseng moo ts'ebetso ea lerata e amang boleng ba matšoao ka kotloloho.

6. Likopo tse tsitsitseng tsa Resistor ho PCB Design

Meeli ea Hona Joale le Tšireletso

Li-resistant tse tsitsitseng li sireletsa likarolo tse hlokolosi ka ho thibela phallo ea hona joale ho ea maemong a sireletsehileng a ts'ebetso. Lisebelisoa tse tloaelehileng li kenyelletsa:

• Moeli oa hona joale oa LED - E beha pele hona joale ho thibela tšenyo ea matekoane le ho netefatsa khanya e sa fetoheng
• Tšireletso ea ho kenya letsoho ea ADC - E fokotsa maqhubu a phoso ho thibela tšenyo ea sethala sa ho kenya
• Taolo ea hona joale ea Inrush - E fokotsa li-spikes tsa hona joale ho li-circuits tsa phepelo ea motlakase
• Bahanyetsi ba liheke - E laola lebelo la ho fetoha le ho fokotsa tšitiso ea motlakase ho li-MOSFET tsa matla

Voltage Division le Reference

Marangrang a karohano ea motlakase a sebelisa lipara tse tsitsitseng tsa resistor ho hlahisa li-voltage tse lekanetsoeng le lintlha tsa leeme. Karolelano ea resistor e etsa qeto ea ntlha ea karohano, ha mamello ea motho ka mong e ama ho nepahala ho felletseng.

Lisebelisoa tse nepahetseng li hloka li-resistor pairs tse lumellanang le TCR e tlase ho boloka likarohano tse tsitsitseng ho pholletsa le mocheso. Marang-rang a li-voltage tsa litšupiso bakeng sa li-ADC, li-comparators, le li-linear regulator li ipapisitse le botsitso ba mohanyetsi bakeng sa ts'ebetso e nepahetseng.

Leeme le Maemo a Lipontšo

Li-resistors tse tsitsitseng li theha libaka tsa ts'ebetso tsa DC bakeng sa lisebelisoa tse sebetsang. Transistor base resistors e beha mokelli oa hajoale, ha marang-rang a maikutlo a amplifier a hlalosa phaello le karabelo ea khafetsa.

Li-circuits tsa boemo ba matšoao li sebelisa li-resistors hammoho le li-capacitor ho kenya ts'ebetsong ho sefa, phetoho ea impedance, le ho fetoha ha maemo. Litekanyetso tsa ho hanyetsa li khetholla maqhubu a sekhutlo, lintlha tsa ho fokotsa, le litšobotsi tsa ho kenya letsoho / tlhahiso.

Tšebelisano ea Impedans le Pheliso

Li-circuits tsa lebelo le holimo tsa dijithale le tsa RF li hloka ho bapisa ho ts'oana hantle ho fokotsa lipontšo tsa matšoao. Series pheliso resistors behoa haufi le mokhanni match mohloli impedance ho phetiso mola tšobotsi impedance.

Pheliso e tšoanang pheletsong ea moamoheli e monya menahano le ho thibela ho lla. Theko e tsitsitseng ea mohanyetsi e tlameha ho ts'oana le ho sitisa mohala oa phetisetso, hangata 50Ω bakeng sa lits'ebetso tsa RF le 100Ω ho 120Ω bakeng sa matshwao a fapaneng a dijithale.

7. Litlhokomelo tsa Moralo oa PCB bakeng sa Li-Resistors tse Tsitsitseng

Leano la ho Beha Karolo

Ho beha ka nepo ho ama ts'ebetso ea motlakase le taolo ea mocheso. Lihanyetsi tsa hona joale tsa kutlo li hloka hore li behoe haufi le sebaka sa tekanyo ka likhokahano tse khutšoane tsa trace ho fokotsa khanyetso ea likokoana-hloko. Li-resistors tse nang le matla a phahameng a matla li hloka sebaka se lekaneng ho tloha likarolong tse thibelang mocheso ho thibela ho kopana ha mocheso.

Bahanyetsi ba bohlokoa ba litsela ba lokela ho behoa ho fokotsa bolelele ba ho latela, ho fokotsa inductance ea parasitic le capacitance e senyang ts'ebetso ea maqhubu a phahameng. Voltage divider resistor pairs li rua molemo ka ho behoa haufi le ho boloka ho lateloa ha mocheso.

Tsamaiso ea Thermal

Bokhoni ba ho qhala mocheso bo ipapisitse le sebaka sa koporo, li-vias tsa mocheso, le moea o teng. Li-resistors tse tsitsitseng tsa holim'a metsi li itšetleha haholo ka pad geometry le board conductivity ea mocheso bakeng sa ho pholisa. Ho eketsa boholo ba pad ea koporo ho ntlafatsa ho hasana ha mocheso empa ho tlameha ho leka-lekana khahlanong le liphello tsa likokoana-hloko tsa motlakase.

Ka-hole resistors fetisetsa mocheso ka karolo ea isang ho PCB. Mekhoa ea ho imolla mocheso lifofaneng tsa motlakase e ka thibela ho phalla ha mocheso, e leng se ka bakang libaka tse chesang tsa sebakeng seo. Lisebelisoa tse nang le matla a phahameng li ka hloka litšelo tsa koporo tse inehetseng kapa lisinki tsa mocheso tse kantle.

Liphello tsa Parasitic le Karabelo ea Khafetsa

Lead inductance le pad capacitance li theha likarolo tsa parasitic tse amang ts'ebetso ea AC. Li-resistors tse tsitsitseng tsa Wirewound li bonts'a inductance ea bohlokoa ea letoto, e etsang hore e se tšoanelehe bakeng sa maqhubu a fetang kilohertz tse 'maloa. Filimi ea tšepe le li-resistant-filimi tse tšesaane ka har'a liphutheloana tse nyane tsa SMD li fokotsa likokoana-hloko bakeng sa ts'ebetso ho gigahertz.

Sebopeho sa tsela ea ho khutlela fatše se susumetsa khokahanyo ea motlakase le ho ba le lerata. Ho fokotsa sebaka sa loop pakeng tsa mohanyetsi le khokahanyo ea fatše ho fokotsa mocheso oa mahlaseli le ho ntlafatsa ho itšireletsa mafung ho kena-kenana le kantle.

8. Litaelo tse tsitsitseng tsa Khetho ea Resistor

Fumana Litlhoko tsa Motlakase

Qala ka ho bala boleng bo hlokahalang ba ho hanyetsa ho tsoa ho tlhahlobo ea potoloho, u nahane ka lintlha tsa ts'ebetso ea DC le litšobotsi tsa matšoao a AC. Khetho ea mamello e itšetlehile ka phapang e amohelehang ea parameter ea potoloho. Li-circuits tsa analoge tse nepahetseng hangata li hloka ± 1% kapa ho feta, ha li-resistance tse hulang tsa dijithale li sebetsa ka mokhoa o lekaneng ka mamello ea ± 5%.

Palo ea ho felloa ke matla e sebelisa maemo a mabe ka ho fetesisa le maemo a hajoale. Sebelisa ntlha e fokolang ea 50% ho isa ho 70% ea matla a lekantsoeng ho netefatsa hore ho na le moeli o lekaneng oa mocheso le botšepehi ba nako e telele.

Hlahloba Maemo a Tikoloho

Mocheso oa mocheso o sebetsang o ama litlhoko tsa TCR ka bobeli le ho fokotseha ha matla. Li-resistant tse tsitsitseng tse sebetsang haufi le mocheso oa tsona o phahameng ka ho fetisisa li hloka ho fokotsoa ka matla ho thibela botsofali bo potlakileng. Litlhaloso tse tlase tsa TCR e ba tsa bohlokoa ha phapang ea mocheso e feta ±20°C.

Mongobo, ho thothomela le ho pepeseha ha lik'hemik'hale ho susumetsa khetho ea thepa. Li-resistors tsa tšepe tsa tšepe tse nang le li-conformal coating li fana ka khanyetso e phahameng ea mongobo ha e bapisoa le mefuta ea carbon e sa koaeloang. Likopo tsa sesole le tsa likoloi li hloka likarolo tse tšoanelehang ho latela maemo a nepahetseng a tlhahlobo ea tikoloho.

Nahana ka Tlhahiso le Litšenyehelo

Liphutheloana tsa SMD li nolofalletsa ho kopanya ka boiketsetso le ho fokotsa litšenyehelo tsa tlhahiso ha li bapisoa le mefuta ea likoti tse phunyeletsang. Boholo bo tloaelehileng ba liphutheloana tse kang 0603 le 0805 bo fana ka tekanyo e ntle ka ho fetisisa ea litšenyehelo, ho fumaneha le litšobotsi tsa ho sebetsana. Boleng bo sa tloaelehang ba khanyetso bo ka ba le ho fumaneha ho fokolang kapa litšenyehelo tse phahameng tsa yuniti.

Kakaretso ea litšenyehelo tsa ho ba beng li kenyelletsa theko ea karolo, litšenyehelo tsa kopano, litlhoko tsa tlhahlobo, le ts'epahalo ea tšimo. Ho sebelisa li-resistors tse tsitsitseng tsa boleng bo holimo maemong a bohlokoa a potoloho ho ka fokotsa litšenyehelo tsa tsamaiso ka kakaretso ka ho ntlafatsa chai le ho fokotsa litefello tsa waranti.

Netefatsa ka Lintlha tsa Moetsi

Kamehla sheba lipampiri tse felletseng bakeng sa lintlha tse felletseng tsa motlakase, tsa mochini le tse tšepahalang. Lintlha tsa moetsi li kenyelletsa:

• Laola liphetho tsa liteko tsa bophelo - Ho hanyetsa botsitso tlas'a matla a lekantsoeng le mocheso
• Mocheso oa ts'ebetso ea libaesekele - Phetoho ea ho hanyetsa ka mor'a khatello ea mocheso
• Ho hanyetsa mongobo - Ho tsitsisa maemong a ho pepesehela mongobo
• Voltage coefficient - Phetoho ea khanyetso ka motlakase o sebelisitsoeng ka boleng bo phahameng ba ohm

Lisebelisoa tsa bohlokoa li rua molemo tlhahlobong ea mangolo a thuto e tiisang khetho ea likarolo tlas'a maemo a sebele a ts'ebetso pele o itlama ho hlahisa.

9. Fixed Resistor vs Variable Resistor

Li-resistors tse tsitsitseng le li-resistant tse fapaneng li sebeletsa merero e ikhethileng moralong oa elektroniki. Bahanyetsi ba tsitsitseng ba fana ka litekanyetso tse sa fetoheng tsa ho hanyetsa, ho fana ka ho nepahala ho phahameng, botsitso bo babatsehang ba nako e telele, le ho tšepahala ho phahameng ka lebaka la mohaho oa bona o bonolo o se nang likarolo tse tsamaeang. Litšenyehelo tsa tlhahiso li lula li le tlase, li nolofalletsa tšebeliso e atileng ho pholletsa le lipotoloho.

Bahanyetsi ba feto-fetohang, ho kenyeletsoa li-potentiometers le li-rheostats, li lumella ho lokisoa ka letsoho kapa ka boiketsetso bakeng sa tokiso, calibration, le lits'ebetso tsa taolo. Sebopeho sa mochini se hlokehang bakeng sa tokiso se hlahisa lintlha tsa ts'epahalo tse kenyelletsang ho roala, phapang ea ho hanyetsa ho kopana, le kutloisiso ea tikoloho. Mesebetsi e mengata ea potoloho e hloka lihanyetsi tse tsitsitseng bakeng sa ts'ebetso e tsitsitseng, ha li-resistant tse fapaneng li sebetsana le litlhoko tse khethehileng tsa taolo ea mosebedisi kapa tekanyo ea fektheri.

10. Likopo tse Khethehileng tse Tsitsitseng tsa Indasteri

Consumer Electronics

Li-smartphone, lik'homphieutha, lithelevishene le lisebelisoa tsa lapeng li sebelisa li-resistors tsa filimi ea carbon le tšepe moo litšenyehelo li lekanyang litlhoko tsa ts'ebetso. Tlhahiso e phahameng e tsamaisa maemo ho boleng bo tloaelehileng ba ho hanyetsa le boholo ba liphutheloana ho eketsa matla a ho reka.

Likoloi tsa Elektroniki

Bahanyetsi ba tšoanelehang ba AEC-Q200 ba mamella maemo a thata a likoloi ho kenyelletsa mocheso o feteletseng ho tloha ho -40°C ho ea ho +150°C, ho thothomela, le likheo tsa motlakase. Taolo ea enjine, lits'ebetso tsa polokeho, le lits'ebetso tsa infotainment li hloka ts'epo e netefalitsoeng ka litefiso tse tlalehiloeng tsa ho hloleha tse ka tlase ho 1 PPM.

Mekhoa ea Taolo ea Liindasteri

Robust metal oxide le wirewound fixed resistors li sebetsa ka mokhoa o ts'epahalang libakeng tsa feme tse pepesehileng lerōle, mongobo le libaesekele tsa mocheso. Li-circuits tsa PLC, li-drive, le lisebelisoa tsa taolo ea ts'ebetso li itšetlehile ka botsitso ba mohanyetsi bakeng sa ts'ebetso e nepahetseng ho feta lilemo tse ngata tsa tšebeletso.

Mechine ea Bongaka

Thepa ea ho shebella mokuli, lisebelisoa tsa ho hlahloba, le lisebelisoa tsa phekolo li hloka li-resistors tsa tšepe tse nang le lerata le tlaase tse nang le botsitso bo babatsehang. Tlhokomelo ea melao e hloka hore ho be le ts'ebetso e felletseng le litokomane tsa mangolo a thuto. Lisebelisoa tse lumellanang le biocompatible le sephutheloana sa hermetic li ka hlokahala bakeng sa lits'ebetso tse kentsoeng.

Moralo oa Phepelo ea Matla

Bahanyetsi ba hajoale ba fana ka maikutlo a taolo ka nepo ka tlase ho ± 1% ho pholletsa le mefuta e fapaneng ea mocheso o sebetsang. Li-resistant tse fokotsang ho ts'oaroa ha metsi li sebetsana le maqhubu a phahameng haholo nakong ea ho qala. Likarohano tsa ho lekola motlakase li hloka lipara tse tsamaellanang tse nang le TCR e tlase ho boloka ponelopele e nepahetseng ea menyako. Li-resistors tse nang le matla a phahameng li sebetsa lits'ebetsong tsa pele ho mojaro le ho li ntša.

Puisano le RF Systems

Marang-rang a ts'oanang a Impedance a sebelisa li-resistors tse nang le bokhoni bo fokolang ba likokoana-hloko le inductance ho boloka botšepehi ba matšoao ho maqhubu a seea-le-moea. Ho emisa mohala oa phetisetso ho hloka boleng bo nepahetseng ba 50Ω ka mamello e tiileng. Marang-rang a leeme bakeng sa li-amplifiers a hloka mefuta ea lifilimi tsa tšepe tse lerata le tlase ho boloka tekanyo ea lerata le lerata.

11. Qetello

Ho Bapisa Theknoloji ea Resistor le Litlhoko tsa Kopo

Ho khetha li-resistant tse tsitsitseng ho qala ka ho utloisisa hore na thepa le kaho li ama ts'ebetso joang. Filimi ea tšepe e fana ka ho nepahala le botsitso bo phahameng, wirewound e tšehetsa matla a phahameng a nang le mefokolo ea inductive, 'me li-resistors tse thehiloeng ka carbon li fana ka likhetho tsa moruo bakeng sa tšebeliso e sa hlokahaleng.

Ho Lekola Litlhaloso Tse Bohlokoa Tsa Motlakase

Mamello, coefficient ea mocheso, tekanyo ea matla, le meeli ea motlakase li tlameha ho bonahatsa maemo a sebele a ts'ebetso. Libakeng tse phahameng, inductance ea parasitic le capacitance e susumetsa boitšoaro ba potoloho, ho etsa khetho ea sephutheloana le mekhoa ea ho e hlophisa.

Ho netefatsa ho Tšepahala ha Thermal le Nako e telele

Ho fokotsa mocheso ka nepo le ho fokotsa mocheso ka katleho ho fokotsa ho hoholeha le ho thibela ho hloleha kapele. Ho netefatsa ts'ebetso ea likarolo ka li-database le tlhahlobo ea litšoaneleho ho matlafatsa moralo o tiileng.

Tšehetso ea Boenjiniere bakeng sa Meetso e Tšepahalang

Li-resistor tse tsitsitseng li ka bonahala li le bonolo, empa li kenyelletsa phapanyetsano ea bohlokoa lipakeng tsa litšenyehelo, ts'ebetso le ts'epo. Bakeng sa merero e hlokang tlhahlobo ea likarolo kapa tšehetso ea PCBA , Highleap Electronics e fana ka lipuisano tsa boenjiniere ho pholletsa le ts'ebetso ea moralo le tlhahiso.