Fixed Resistor: Mhando, Zvinotsanangurwa, uye Zvishandiso muPCB Dhizaini

1. ziviso

Resistor yakagadzika chinhu chemagetsi chinoshandiswa zvisina kurongwa chine resistance yakafanorongwa iyo inoramba iripo panguva yekushanda. Kusiyana nevanochinjisa vanochinja, resistor yakagadzika haichinje nekuchinja kwevoltage, kuchinja kwetembiricha mukati mehuwandu hwayo hwakatarwa, kana kugadziriswa kwekunze. Izvi zvikamu zvinomiririra zvinhu zvinoshandiswa zvakanyanya mumasekete emagetsi, zvinoonekwa mumhando dzese dzePCB kubva kumagetsi evatengi kusvika kumasystem ekudzora maindasitiri.

Mukushandiswa kunoshanda, ma-fixed resistors anoshanda mabasa akakosha anosanganisira current limitation, voltage division, signal biasing, impedance matching, uye filtering. Kunzwisisa mhando dze-fixed resistor uye specifications zvinogonesa mainjiniya kusarudza zvikamu zvine ruzivo zvinokanganisa zvakananga mashandiro ecircuit, thermal management, uye kugadzikana kwenguva refu.

2. Chii Chinonzi Fixed Resistor?

Izwi rokuti "yakagadziriswa" rinoratidza kuti kupikisa kukosha kunotangwa panguva yekugadzira uye haigoni kugadziriswa nemushandisi. Uhu hunhu hwakakosha hunosiyanisa zvakagadziriswa resistors kubva potentiometers, rheostats, uye zvimwe zvinosiyana zvinopikisa zvishandiso.

Yakagadziriswa resistor application inotora akawanda edunhu mabasa:

• Kuganhurira kwemagetsi - Kunodzivirira ma LED, ma IC, nezvimwe zvinhu zvinonzwa nekudzora kuyerera kwemagetsi.

• Kupatsanurana kwemagetsi - Kunogadzira network dzekuparadzanisa masaini ekugadzirisa masaini uye kugadzira magetsi ereferensi.

• Kugadzikana kwerusarura - Kunoisa nzvimbo dzakakodzera dzekushanda kwema transistors nema amplifiers anoshanda.

• Kufananidza Impedance - Inopa magumo emutsetse wenzira dzekutumira dzinomhanya zvikuru dzedhijitari neRF.

Chimiro chekutanga chine substrate zvinhu, chinodzivirira chinhu, chinodzivirira coating, uye magetsi materminal kana anotungamira. Iyo resistive element material - ingave kabhoni kuumbwa, simbi firimu, simbi oxide, kana waya - inotarisisa iwo akakosha emagetsi maitiro anosanganisira kushivirira, tembiricha coefficient, kuita ruzha, uye simba rekubata simba.

3. Fixed Resistor Types by Material

Carbon Composition Resistors

Carbon composition resistors inosanganisa kabhoni zvidimbu neceramic binder kuti iumbe chinopikisa chinhu. Izvi zvikamu zvinopa yakaderera mutengo wekugadzira uye yakanakisa surge absorption kugona. Nekudaro, ivo vanoratidza ruzha rwemagetsi rwakanyanya, kusagadzikana kwetembiricha neyakajairwa TCR hunhu hwe -200 kusvika +800 ppm/°C, uye kwakakosha kuramba kudonha nekufamba kwenguva.

Yemazuvano PCB madhizaini haawanzo kutsanangura kabhoni yemhando yemhando kunze kweyakanyanya kudzivirira ekuvhiya maapplication uko iwo enguva pfupi absorption maitiro anopa kukosha.

Carbon Film Resistors

Kabhoni firimu tekinoroji inoisa yakaonda kabhoni layer pane ceramic substrate, yobva yacheka helical groove kumisikidza kukosha kwekupokana. Ichi chivakwa chinopa kugadzikana kuri nani pane kabhoni yemhando yemhando, ine yakajairwa kushivirira kwe ± 5% uye TCR tsika dzakatenderedza ± 250 ppm/°C.

Kupokana kwakakura kubva kune mashoma ohms kuenda kune akati wandei megohm, yakasanganiswa nemutengo wakaderera, inoita kuti kabhoni firimu resistors ive yakakurumbira mune yakajairika-chinangwa chevatengi zvemagetsi uko kudiwa chaiko kuri pakati nepakati.

Metal Film Resistors

Metal film resistors inoshandisa matete akaturikidzana e nickel-chromium alloy akaiswa paceramic substrates. Iyi tekinoroji inopa hunhu hwepamusoro hwekuita hunosanganisira kudzika kwemagetsi ruzha, kushivirira kwakasimba kusvika ± 0.1%, uye kugadzikana kwakanyanya kwekushisa neTCR tsika dzakaderera se ± 25 ppm/°C.

Kuramba kwakagadzikana pamusoro petembiricha uye nguva kunoita kuti simbi firimu ive yakasarudzika yakagadziriswa resistor sarudzo yekuyera kuyerwa maseketi, instrumentation amplifiers, referensi voltage network, uye analog chiratidzo chekugadzirisa zvikumbiro.

Metal Oxide Resistors

Metal oxide firimu resistors anoshandisa tin oxide kana zvimwe zvakafanana kugadzira iyo inodzivirira chinhu. Izvi zvikamu zvinokunda munzvimbo dzekupisa kwepamusoro uye zvinoratidza kuramba kwakanyanya kumamiriro ekuremedza. Chivako chakasimba chinobvumira kukwidzwa kwemagetsi kupfupi pasina kukuvara zvachose.

Zvishandiso zvinosanganisira magadzirirwo emagetsi emagetsi, mota dzinodzora maseketi, uye zvishandiso zvemaindasitiri uko kuvimbika kwenguva refu pasi pemamiriro ekushanda akaomarara kwakakosha.

Wirewound Resistors

Wirewound resistors inoumbwa newaya yekupokana, kazhinji nickel-chromium alloy, yakakuvadzwa yakatenderedza musimboti unodzivirira. Ichi chivakwa chinogonesa kubata kwesimba repamusoro kubva pawatts akati wandei kusvika kumazana emawatts, akasanganiswa nekunyatso kurongeka uye kugadzikana.

Iyo yekutanga kudzikisira yakakosha parasitic inductance nekuda kweiyo yakakomberedzwa waya chimiro, iyo inorambidza kushandiswa mune yakakwirira-frequency maseketi. Wirewound fixed resistors inowana maapplication mumagetsi emagetsi, mabhangi ekuremedza, kunzwa kwazvino, uye chaiyo voltage divider uko DC kana yakaderera-frequency kushanda kunodiwa.

4. Fixed Resistor Package Types

Kuburikidza neHole Resistors

Axial kuburikidza-gomba resistors inoratidzira miviri yecylindrical ine waya inotungamira inosimuka kubva kumagumo ega ega. Izvi zvikamu zvinopinza kuburikidza nemakomba akaputirwa muPCB uye zvinoda wave soldering kana kushambadzira nemaoko.

Kuburikidza ne-gomba mapakeji anokwenenzvera mune yakakwirira-simba maapplication nekuda kwepamusoro kupisa kupisa kuburikidza nemitungamiri uye PCB substrate. Ivo zvakare vanopa mechanic kusimba kune maapplication ari pasi pekudengenyeka kana kushushikana kwemuviri.

SMD Fixed Resistors

Surface mount resistors inotonga yemazuva ano PCB gungano, inowanikwa mune yakajairwa saizi kusanganisira 0201, 0402, 0603, 0805, 1206, uye makuru mapakeji. Iyo compact tsoka inogonesa yakakwirira chikamu density, otomatiki pick-ne-nzvimbo kusangana, uye kuderedzwa kweparasitic mhedzisiro nekuda kwehurefu hwekutungamira.

SMD yakagadziriswa resistors inovandudza-yakawanda-frequency performance nekuderedza inductance uye capacitance. Mabhenefiti ekugadzira anosanganisira kukurumidza kutenderera kutenderera, mitengo yakaderera yegungano, uye kuenderana nekaviri-mativi echikamu chekuisa.

Precision Fixed Resistors

Precision resistors inowana kushivirira kwe ± 0.01% kusvika ± 0.1% neTCR values ​​pazasi ± 5 ppm/°C. Zvinhu izvi zvinoshandisa hunyanzvi hwekugadzira maitiro uye zvinhu kuchengetedza kugadzikana kwakasiyana.

Zvishandiso zvinosanganisira iko kwazvino masosi, yakakwirira-chaiyo voltage mareferensi, mabhiriji ezviridzwa, uye chiyero chekuenzanisa uko kuyerwa kwakakosha.

High-Simba Fixed Resistors

High-simba resistors inobata inoenderera simba kupera kubva kune akati wandei watts kusvika kilowatts. Misiyano yekuvaka inosanganisira ceramic yakavharirwa wirewound mhando, aluminium-housed chassis-mount dhizaini, uye gobvu-firimu resistors pane kupisa-kuparadzira substrates.

Magadzirirwo emagetsi emagetsi, kudzora mota, mabhureki resistors, uye mitoro yekuyedza michina inotsamira pane izvi zvakagadziriswa resistor zvikamu zvekubvisa simba uye kutonga.

Current-Sense Resistors

Ikozvino-sense kana shunt resistors inoratidzira yakanyanya-yakaderera kuramba kukosha, kazhinji iri pasi pe100 miriyoni, ine yakaderera kwazvo TCR kuve nechokwadi cheyero chaiyo iripo pane tembiricha. Ina-terminal Kelvin yekubatanidza inobvisa zvikanganiso zvekutungamira mukukanganisa maapplication.

Battery manejimendi masisitimu, magetsi ekutarisa maseketi, uye mota yekudzora masisitimu zvinoenderana neazvino-pfungwa yakagadziriswa resistors yemhinduro nekudzivirira.

5. Key Fixed Resistor Specifications

Kuramba Kukosha uye Kushivirira

Ukoshi hwezita hwekupokana hunomiririra kuramba kunodiwa pazvimiro zvereferensi, kazhinji 25°C. Standard resistor values ​​anotevera E-series system-E6, E12, E24, E96, uye E192-inopa logarithmic spacing padanho rekupikisa.

Kushivirira kunotsanangura kutsauka kukuru kubva pamutengo wezita, nepfungwa dzakajairika dze ±20%, ±10%, ±5%, ±1%, ±0.5%, uye ±0.1%. Kusarudzwa kwekushivirira kunokanganisa zvakananga kururama kwedunhu muma voltage dividers, ma amplifiers ekugadzirisa, uye masisitimu ekuyera uko kuenderana kwe resistor uye kunyatsorurama kwakakosha.

Power Rating

Chiyero chesimba chinotsanangura kupararira kwesimba kunoramba kuripo kunogona kugadziriswa ne resistor isina kupfuudza tembiricha yayo yepamusoro yekushandisa. Zviyero zvakajairika zvinosanganisira 1/16W, 1/10W, 1/8W, 1/4W, 1/2W, uye 1W kune mashandisirwo madiki ezviratidzo.

Kupfuura mwero wesimba kunokonzeresa kushushikana kwemafuta, kukurumidza kuchembera, kuramba kudonha, uye kukundikana. Dhizaini yakakodzera yekupisa inoda kuderedzwa zvichibva pane ambient tembiricha uye mamiriro ekufambisa kwemhepo kuve nechokwadi chekuvimbika kwenguva refu.

Temperature Coefficient of Resistance

Kuwanda kwekupisa kwekudzivirira kunoratidza kuti kupisa kunochinja sei nekupisa, kunoratidzwa muzvikamu pamiriyoni padhigirii Celsius. Zvidziviriro zvemafirimu esimbi zvinowanzosvika pa ±50 kusvika ±100 ppm/°C, nepo mhando dzemhando dzakanyatsojeka dzichisvika ±5 kusvika ±25 ppm/°C.

Zvishandiso zvinoda kushanda kwakadzikama pa tembiricha yakanyanyisa, senge chaiyo voltage mareferensi uye maseketi ezviridzwa, zvinoda yakaderera TCR yakagadziriswa resistor maratidziro kuti kuderedze tembiricha-induced zvikanganiso.

Maximum Working Voltage

Maximum inoshanda voltage inomiririra yakanyanya kuenderera voltage iyo yakagadziriswa resistor inogona kumira pasina njodzi yemukati arcing kana kuparara. Iyi dhizaini inova yakakosha mumaseketi e-high-voltage uko iyo voltage inoshandiswa inogona kudarika mazinga akaverengerwa kubva kumagetsi ega ega.

Vagadziri vePCB vanofanirwa kuonesa mareti emagetsi kunyanya mumagadzirirwo emagetsi emagetsi, uko mapfupi uye mamiriro ekukanganisa anogona kumboisa zvinopikisa kune voltages zvakanyanya pamusoro peakajairwa maitiro ekushanda.

Kugadzikana uye Kuita Noise

Kugara kwenguva refu kugadzikana kunoratidza kuramba kudonha pamusoro penguva yakawedzerwa yekushanda, zvichipesvedzerwa nekushisa bhasikoro, kuratidzwa kwehunyoro, uye kushushikana kwemutoro. Metal firimu uye wirewound yakagadziriswa resistors inoratidza kugadzikana kwepamusoro kana ichienzaniswa nemhando dzekabhoni.

Ruzha rwemagetsi runosiyana zvakanyanya neresistor tekinoroji. Metal film resistors inogadzira shoma yekupisa uye yakawandisa ruzha, ichiita kuti ive yakanakira yakaderera-ruzha amplifier dhizaini uye chaiyo kuyerwa maseketi uko kuita ruzha kunokanganisa zvakananga mhando yechiratidzo.

6. Fixed Resistor Applications muPCB Design

Ikozvino Kumisikidza uye Dziviriro

Fixed resistors inodzivirira zvinhu zvine hunyoro nekudzora kuyerera kwazvino kune yakachengeteka mashandiro emazinga. Zvishandiso zvakajairika zvinosanganisira:

• LED ikozvino kumisa - Inoisa kumberi ikozvino kudzivirira kukuvadzwa kwejunction uye kuve nechokwadi kupenya kunoenderana
• ADC kuchengetedzwa kwekuisa - Inomisa kukanganisa mafungu kudzivirira kukuvara kwechikamu chekupinza
• Inrush current control -Inoderedza kutanga ikozvino spikes mumagetsi emagetsi maseketi
• Gedhi resistors -Inodzora switching kumhanya uye inoderedza kukanganiswa kwemagetsi muMOSFETs simba

Voltage Division uye Reference

Manetwork ekuparadzanisa magetsi anoshandisa ma "fixed resistor pairs" kugadzira ma "scaled reference voltages" uye ma "bias points". Chiyero che "resistor ratio" ndicho chinoona nezvekupatsanurwa kwemagetsi, nepo "individual tolerances" ichikanganisa kunyatsojeka kwemagetsi.

Precision applications inoda akafananidzwa resistor pairs ine yakaderera TCR kuchengetedza yakagadzikana kupatsanura reshiyo pane tembiricha. Reference voltage network yeADCs, vaenzanisi, uye linear regulators zvinoenderana nekutsiga kweresistor kushanda chaiko.

Kusarura uye Mamiriro Echiratidzo

Fixed resistors inogadza DC inoshanda mapoinzi ezvishandiso zvinoshanda. Transistor base resistors inoisa muunganidzi ikozvino, nepo inoshanda amplifier mhinduro network inotsanangura kuwana uye frequency mhinduro.

Signal conditioning circuits anoshandisa resistors musanganiswa nema capacitors kuita kusefa, impedance shanduko, uye level shift. Iwo anopikisa kukosha anotaridza makona frequency, attenuation zvinhu, uye yekupinda / kubuda impedance maitiro.

Impedans Matching uye Kumisa

Yakakwira-kumhanya dhijitari uye RF maseketi anoda kwakaringana impedance yekufananidza kudzikisa chiratidzo chekuratidzira. Series termination resistors yakaiswa padyo nemutyairi match source impedance kune transmission line characteristic impedance.

Parallel kugumiswa kumagumo ekugamuchira kunotora maratidziro uye kunodzivirira kurira. Iyo yakagadziriswa resistor kukosha inofanirwa kuenderana netambo yekutapurirana impedance, kazhinji 50Ω yeRF zvikumbiro uye 100Ω kusvika 120Ω yekusiyanisa masaini edhijitari.

7. PCB Layout Kufunga nezve Fixed Resistors

Component Placement Strategy

Kuiswa kwakakodzera kunokanganisa zvose kushanda kwemagetsi uye kutonga kwekupisa. Zvidziviriro zvemazuva ano zvinoda kuiswa padyo nenzvimbo yekuyeresa netwunokochekera hupfupi kuti kuderedze kuramba kweparasitic. High-power fixed resistors inoda nzvimbo yakakwana kubva kune tembiricha-sensitive components kudzivirira kupisa kwekubatana.

Yakakosha masaini nzira resistors anofanirwa kumisikidzwa kuti aderedze kureba, kuderedza parasitic inductance uye capacitance inodzikisira yakakwira-frequency kuita. Voltage divider resistor pairs vanobatsirwa kubva padhuze nekuisa kuti uchengetedze kupisa kwekutevera.

Thermal Management

Kupisa kupisa kugona kunoenderana nenzvimbo yemhangura, thermal vias, uye ambient airflow. Surface gomo rakagadziriswa resistors rinotsamira zvakanyanya pane pad geometry uye bhodhi yekupisa conductivity yekutonhodza. Kuwedzera saizi yemhangura pad inovandudza kupisa kupararira asi inofanirwa kuenzana nemagetsi parasitic mhedzisiro.

Kuburikidza ne-gomba resistors kuendesa kupisa kuburikidza nechikamu chinotungamira muPCB. Maitiro ekuyamura kupisa mundege dzemagetsi anogona kudzikamisa kuyerera kwekushisa, zvichigona kukonzera nzvimbo dzinopisa dzenzvimbo. Mashandisirwo emagetsi epamusoro anogona kuda kudira yakatsaurwa yemhangura kana masingi ekupisa ekunze.

Parasitic Migumisiro uye Frequency Response

Lead inductance uye pad capacitance inogadzira parasitic zvinhu zvinokanganisa AC performance. Wirewound fixed resistors inoratidza akakosha akatevedzana inductance, zvichiita kuti dzisakodzere ma frequency pamusoro akati wandei kilohertz. Simbi firimu uye dzakatetepa-firimu resistors mumadiki eSMD mapakeji anoderedza parasitics yekushanda mugigahertz renji.

Ground kudzoka nzira dhizaini inokanganisa electromagnetic coupling uye ruzha kubatwa. Kuderedza loop nzvimbo pakati peanopikisa uye kubatanidza kwepasi kunoderedza kuburitswa kweradiated uye kunatsiridza kusadzivirirwa kune kupindira kwekunze.

8. Fixed Resistor Selection Guidelines

Sarudza Magetsi Zvinodiwa

Tanga nekuverenga kukosha kwekupikisa kunodiwa kubva pakuongorora kwedunhu, uchifunga nezve DC inoshanda mapoinzi uye AC chiratidzo hunhu. Kushivirira kusarudzwa kunoenderana nekubvumidzwa kwedunhu parameter kusiyana. Precision analog maseketi anowanzoda ± 1% kana zvirinani, nepo dijitari yekudhonza-up resistors inoshanda zvakaringana ne ± 5% kushivirira.

Power dissipation calculation inoshandisa yakaipisisa-case voltage uye mamiriro azvino. Isa chinhu chinodzikisira che50% kusvika 70% yesimba rakayerwa kuti ive nechokwadi chakaringana chemafuta emuganho uye kuvimbika kwenguva refu.

Ongorora Mamiriro Ezvakatipoteredza

Kushanda tembiricha renji inokanganisa zvese TCR zvinodiwa uye kuderera kwesimba. Fixed resistors anoshanda padhuze neakanyanya rated tembiricha inoda hutsinye derating kudzivirira kukurumidza kuchembera. Yakaderera TCR mataurirwo anove akakosha kana tembiricha yakasiyana ichipfuura ± 20°C.

Humidity, vibration, uye kuratidzwa kwemakemikari zvinopesvedzera kusarudzwa kwezvinhu. Metal film resistors ine conformal coating inopa hunyoro hwepamusoro kuramba uchienzaniswa nemhando dzekabhoni dzisina kuvharwa. Mauto nemotokari zvikumbiro zvinoda zvinhu zvinofanirwa kuenderana nemamiriro ekuyedza nharaunda.

Funga nezveKugadzira uye Mutengo

Mapakeji eSMD anogonesa kuungana otomatiki uye anoderedza mari yekugadzira zvichienzaniswa nemhando dzemaburi anoburitswa. Saizi dzemapakeji dzakajairwa dzakadai se0603 na0805 dzinopa mwero wakanakisa wemutengo, kuwanikwa, uye hunhu hwekubata. Kudzivirira kusingawanzoitika kunogona kunge kushoma kuwanikwa kana kuti mitengo yeyuniti yakakwira.

Mutengo wese wevaridzi unosanganisira mutengo wechikamu, mutengo wegungano, zvinodiwa zvekuyedzwa, uye kuvimbika kwemunda. Kushandisa yakakwirira-yemhando yakagadziriswa resistors munzvimbo dzakakosha dzedunhu kunogona kuderedza mutengo wehurongwa hwese nekuvandudza goho uye kuderedza waranti inodzoka.

Simbisa neMugadziri Data

Gara uchibvunza akadzama madheti emagetsi akazara, mechanika, uye kuvimbika kutaurwa. Data yemugadziri inosanganisira:

• Rodha hupenyu hwebvunzo mhinduro - Resistance kugadzikana pasi peyakayerwa simba uye tembiricha
• Tembiricha yebhasikoro kuita -Kuramba shanduko mushure mekushushikana kwekupisa
• Humidity resistance - Kugadzikana mumamiriro ekuratidzwa kwemwando
• Voltage coefficient -Kuramba shanduko neyakashandiswa voltage mune yakakwira-ohm kukosha

Zvikumbiro zvakakosha zvinobatsira kubva mukuyedzwa kwekukodzera kunosimbisa kusarudzwa kwechikamu pasi pemamiriro chaiwo ekushanda usati wazvipira kugadzira.

9. Fixed Resistor vs Variable Resistor

Fixed resistors uye akasiyana resistors anoshandira zvinangwa zvakasiyana mukugadzirwa kwemagetsi. Fixed resistors inopa kusachinjika kupikisa kukosha, kuunza yakanyanya kurongeka, yakanakisa kugadzikana kwenguva refu, uye kuvimbika kwepamusoro nekuda kwekuvaka kwavo kwakapfava pasina zvikamu zvinofamba. Mari yekugadzira inoramba yakaderera, ichigonesa kushandiswa kwakapararira mumaseketi ese.

Variable resistors, kusanganisira potentiometers uye rheostats, inobvumira manyorero kana otomatiki kuramba kugadzirisa kwekugadzirisa, calibration, uye kutonga maapplication. Iyo mechanical chimiro chinodiwa pakugadzirisa chinounza kuvimbika kutarisisa kunosanganisira kupfeka, kusangana nekupikisa kusiyana, uye kunzwisiswa kwezvakatipoteredza. Mazhinji edunhu mabasa anoda akagadziriswa maresitorendi ekushanda kwakafanana, nepo zvinosiyana zvinogadzirisa zvinogadzirisa zvakanangana zvinodiwa zvemushandisi kutonga kana fekitori calibration.

10. Indasitiri-Yakananga Fixed Resistor Applications

Consumer Electronics

Mafonifoni, makomputa, terevhizheni, uye midziyo yemumba inoshandisa kabhoni firimu uye simbi firimu resistors uko kukwirisa mutengo kunoyera kuita zvinodiwa. Kugadzirwa kwepamusoro-vhoriyamu kunofambisa kumira pane zvakajairwa kupikisa kukosha uye masaizi epasuru kuti uwedzere mari yekutenga.

Zvemagetsi Electronics

AEC-Q200 vanokwanisa resistors vanoshingirira nharaunda dzemotokari dzinosanganisira tembiricha yakanyanyisa kubva -40°C kusvika +150°C, vibration, uye magetsi anochinja. Injini manejimendi, masisitimu ekuchengetedza, uye infotainment application inoda kuvimbika kwakanyorwa kukundikana mazinga pazasi 1 PPM.

Industrial Control Systems

Robust metal oxide uye wirewound fixed resistors inoshanda zvakavimbika munzvimbo dzefekitori ine kuratidzwa kune huruva, hunyoro, uye tembiricha bhasikoro. PLC yekupinda / kubuda maseketi, madhiraivha, uye maitiro ekudzora chiridzwa zvinoenderana nekutsiga kwekudzivirira kwekushanda chaiko pamusoro pemakore mazhinji ehupenyu hwesevhisi.

Medical mano

Midziyo yekutarisisa varwere, midziyo yekuongorora, uye michina yekurapa inoda yakaderera-ruzha simbi firimu resistors nekugadzikana kwakanyanya. Kutevedzwa kwemitemo kunoda kuteedzera kuzere uye magwaro ekufanirwa. Biocompatible zvinhu uye hermetic kurongedza kungave kuri madikanwa kune anoisirwa maapplication.

Power Supply Design

Zvazvino-pfungwa zvinopikisa zvinopa mhinduro yemitemo ine chokwadi pazasi ± 1% mukati meiyo tembiricha yekushanda. Inrush inodzikamisa resistors inobata yakakwirira peak currents panguva yekutanga. Voltage yekutarisa divider inoda akafananidzwa mapeya ane yakaderera TCR kuti arambe achitarisisa chikumbaridzo chinoonekwa. Yakakwirira-simba yakagadziriswa resistors inoshanda mu pre-load uye discharge application.

Kukurukurirana uye RF Systems

Impedance inoenderana netiweki inoshandisa resistors ine shoma parasitic capacitance uye inductance kuchengetedza chiratidzo chekuvimbika paredhiyo frequencies. Kumisa tambo yekufambisa kunoda chaiyo 50Ω kukosha nekushivirira kwakasimba. Bias network yeamplifiers inoda yakaderera-ruzha simbi firimu mhando kuchengetedza chiratidzo-kune-ruzha chiyero.

11. Mhedziso

Kufananidza Resistor Tekinoroji kune Zvido Zvekushandisa

Kusarudza zvakagadziriswa resistors kunotanga nekunzwisisa kuti zvinhu uye kuvaka zvinokanganisa sei kuita. Firimu resimbi rinopa kurongeka kwakanyanya uye kugadzikana, wirewound inotsigira yakakwirira simba ine inductive mipimo, uye kabhoni-based resistors inopa sarudzo dzehupfumi kune dzisiri-yakakosha kushandiswa.

Kuongorora Madiro Emagetsi Akakosha

Kushivirira, tembiricha coefficient, chiyero chemagetsi, uye miganhu yemagetsi zvinofanirwa kuratidza chaiwo mamiriro ekushanda. Pama frequency epamusoro, parasitic inductance uye capacitance inopesvedzera mafambiro edunhu, kuita sarudzo yepakiti uye magadzirirwo maitiro akakosha.

Kuve nechokwadi cheThermal uye Yenguva Yakareba Kuvimbika

Kudzikira kwakakodzera uye kunoshanda kupisa kupisa kunoderedza kukukurwa uye kudzivirira kutadza kwekutanga. Kuongorora mashandiro echikamu kuburikidza nemadatabase uye bvunzo yekukodzera kunosimbisa kusimba kwedhizaini.

Injiniya Rutsigiro rweMagadzirirwo Akavimbika

Zvirambidzo zvisina kugadziriswa zvinogona kuita sezviri nyore, asi zvinosanganisira kuchinjana kwakakosha pakati pemutengo, mashandiro, uye kuvimbika. Kune mapurojekiti anoda kuongororwa kwezvikamu kana rutsigiro rwePCBA , Highleap Electronics inopa mazano einjiniya mukati mekugadzira nekugadzirisa.