Akoranga Taima Jameco 555
Nga korero hua
Whakatakotoranga
- Ingoa Hua: 555 Timer IC
- I whakaurua mai: Neke atu i te 40 tau ki muri
- Ngā Mahi: Te taima i te aratau pūmau kotahi me te oscillator ngaru tapawhā i te aratau pūmau kore
- Mōkihi: DIP 8-pine
Nga Tohutohu Whakamahi Hua
- Honoa te Pine 1 (Whenua) ki te whenua ara iahiko.
- Whakamahia he iti-rahitage pātere ki te Pine 2 (Trigger) kia teitei ai te putanga (Pin 3).
- Whakamahia te ātete R1 me te pūnga C1 hei whakatau i te roanga o te putanga.
- Tātaihia te uara R1 mā te whakamahi i te R1 = T * 1.1 * C1, ko T te wā e hiahiatia ana.
- Kaua e whakamahi i ngā pūnga hikohiko hei whakarite i te wā tika.
- Whakamahia ngā uara ātete i waenga i te 1K ohms me te 1M ohms mō ngā taima paerewa 555.
- Honoa te Pine 1 (Whenua) ki te whenua ara iahiko.
- Ka utu te pūnga C1 mā roto i ngā ātete R1 me R2 i te aratau astable.
- He teitei te putanga i te wā e utu ana te pūnga.
- Ka iti te putanga ina te rōrahitage puta noa i C1 ka tae ki te 2/3 o te nui o te tukutage.
- Ka teitei anō te putanga ina teitei te rōrahitagka heke te e puta noa i a C1 ki raro iho i te 1/3 o te nui o te tukutage.
- Ka mutu te oscillator i te Pine Whakatakoto Whenua 4 (Tautuhi Anō) ka whakatakotoria te putanga ki raro.
Me pēhea te whirihora i tētahi IC Taima 555
555 Akoranga Matama
Nā Philip Kane
Neke atu i te 40 tau ki muri i whakaurua mai ai te taima 555. Nā tōna māmā noa, tōna ngāwari ki te whakamahi, me tōna utu iti, kua whakamahia i roto i ngā mano tini tono, ā, kei te wātea tonu. I konei ka whakamāramahia e mātou me pēhea te whirihora i tētahi IC 555 paerewa kia mahi i ana mahi e rua - hei taima i te aratau kotahi-pūmau me te hei oscillator ngaru tapawhā i te aratau astable.
Kei roto i te Kete Akoranga Taima 555
- http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&productId=20601&catalogId=10001
- http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&productId=546071&catalogId=10001
- http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&productId=691585&catalogId=10001
- http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&productId=690700&catalogId=10001
- http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&productId=333973&catalogId=10001
- http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&productId=545588&catalogId=10001
555 Ngā Tohu me te Pinout (8-pin DIP)
E whakaatu ana te Pikitia 1 i ngā tohu tāuru me ngā tohu tāuru o te taima 555 i te mea kua whakaritea huri noa i tētahi mōkihi raina-rua 8 pine paerewa (DIP).
- Pine 1 – Whenua (GND) Kua honoa tēnei pine ki te whenua ara iahiko.
- Pine 2 – Whakaoho (TRI) He iti te rōrahitage (iti iho i te 1/3 o te nui o te tukutage) mēnā ka tāpirihia he wā poto ki te tāuru Trigger, ka piki te putanga (pine 3). Ka noho teitei tonu te putanga tae noa ki te taumata teitei o te voltagetagka tāpirihia a e ki te tāuru Paepae (pine 6).
- Pine 3 – Putanga (OUT) I te āhua iti o te putanga ka puta te rōrahitagka tata te e ki te 0V. I te āhua putanga teitei katagka 1.7V te iti iho o te e i te rōrahi tukutage. Mo te example, mēnā ko te nui o te tukutage he putanga 5V teitei te rōrahitagka 3.3 volts. Ka taea e te putanga te pūtake, te totohu rānei ki te 200 mA (ko te mōrahi kei runga i te voltase tukutagme).
- Pine 4 – Tautuhi Anō (RES) He iti te rōrahitagKi te tāpirihia te e (iti iho i te 0.7V) ki te pine tautuhi anō, ka iti te hiko o te putanga (pine 3). Me noho hono tonu tēnei tāuru ki te Vcc ina kore e whakamahia.
- Pine 5 – Mana whakahaeretage (CON) Ka taea e koe te whakahaere i te paepae voltage (pine 6) mā te tāuru whakahaere (kua whakatakotoria ā-roto ki te 2/3 o te voltage tukutage). Ka taea e koe te whakarerekē mai i te 45% ki te 90% o te nui o te rauemitage. Mā tēnei ka taea e koe te whakarerekē i te roa o te pāorooro putanga i te aratau kotahi-pūmau, i te auau putanga rānei i te aratau ā-pūmau. Mēnā kāore e whakamahia ana, e taunakihia ana kia honoa tēnei tāuru ki te whenua ara iahiko mā te pūnga 0.01uF.
- Pine 6 – Paepae (TRE) I roto i te aratau astable me te monostable, katage puta noa i te pūnga wā ka aroturukitia mā te tāuru Paepae. Ina te rōrahitagina ka piki ake tēnei tāuru i te uara paepae, ka neke te putanga mai i te tiketike ki te iti.
- Pine 7 – Tukunga (DIS) ina te voltage puta noa i te pūnga wā ka nui ake i te uara paepae. Ka tukuna te pūnga wā mā tēnei tāuru
- Pine 8 – Te rahinga tukutage (VCC) Koinei te vol tuku paitagte pūrua e. Ko te nui o te tukutagKo te whānuitanga o te hiko kei waenganui i te +5V me te +15V. Kāore e tino rerekē te wā RC i runga i te kaha tuku hiko.tagte awhe e (tata ki te 0.1%) i te aratau pumau-kore, pumau-kore rānei.
Porowhita Monostable
E whakaatu ana te Pikitia 2 i te ara iahiko pūmau taketake o te taima 555.
- E pā ana ki te hoahoa wā i te ahua 3, he iti te voltagetagKo te pātī e pā ana ki te tāuru whakaoho (pine 2) ka puta te rōrahi putangatage i te pine 3 hei neke mai i te iti ki te teitei. Mā ngā uara o R1 me C1 e whakatau te roa o te noho teitei o te putanga.
I te wā o te wā, kāore he pānga o te āhua o te tāuru whakaoho ki te putanga. Heoi, e ai ki te Whakaahua 3, ki te iti tonu te tāuru whakaoho i te mutunga o te wā wā, ka noho teitei tonu te putanga. Kia tino poto ake te pā o te whakaoho i te wā wā e hiahiatia ana. E whakaatu ana te ara iahiko i te Whakaahua 4 i tētahi huarahi hei whakatutuki i tēnei mā te hiko. Ka puta he pā poto-roa ina kati a S1. Ka whiriwhiria a R1 me C1 hei whakaputa i tētahi pā he poto ake i te wā wā.
- E ai ki te pikitia 5, mā te whakatakoto i te pine 4 (Tautuhi Anō) ki te iti i mua i te mutunga o te wā wā ka mutu te taima.
- Me hoki te tautuhi anō ki te teitei i mua i te whakahohenga o tētahi atu wā wā.
Te tatau i te wā whakatā
- Whakamahia te tātai e whai ake nei hei tatau i te wā wā mō tētahi ara iahiko pūmau kotahi: T = 1.1 * R1 * C1
- Ko R1 te ātete i roto i ngā ohm, ko C1 te kaha i roto i ngā farad, ā, ko T te wā. Hei tauiraampHei tauira, ki te whakamahi koe i tētahi ātete 1M ohm me tētahi pūnga 1 micro Farad (.000001 F) ko te wā wā ka 1 hēkona: T = 1.1 * 1000000 * 0.000001 = 1.1
Te whiriwhiri i ngā wāhanga RC mō te mahi Monostable
- Tuatahi, whiriwhiria he uara mō C1.
He iti noa te whānuitanga o ngā uara pūnga e wātea ana ki te whakataurite ki ngā uara ātete. He māmā ake te kimi i te uara ātete e ōrite ana mō tētahi pūnga kua hoatu.) - Muri iho, tatauhia te uara mō R1, ka whakakotahitia ki a C1, hei whakaputa i te wā e hiahiatia ana.
- Kaua e whakamahi i ngā pūnga hikohiko. Ka rerekē pea te uara pūnga tuturu o aua pūnga mai i te uara kua whakatauria.
- Waihoki, ka turuturu te utu, ka hua ake ai he hē o ngā uara wā.
- Engari, whakamahia he pūnga iti iho te uara, me te ātete teitei ake te uara. Mō ngā taima 555 paerewa, whakamahia ngā uara ātete taima i waenga i te 1K ohms me te 1M ohms.
Porowhita Monostable Example
E whakaatu ana te Pikitia 6 i tētahi ara iahiko wiriwiri kotahi-pūmau 555 katoa me te whakaoho taha māmā. Ka tīmata te pana kati S1 i te wā wā 5-hēkona ka tahuri ki te LED1. I te mutunga o te wā wā ka mate te LED1. I te wā mahi noa, ka hono te pana S2 i te pine 4 ki te hiko tuku.tage. Hei whakamutu i te taima i mua i te mutunga o te wā wā, me whakatakoto e koe a S2 ki te tūranga "Tautuhi Anō" e hono ana i te pine 4 ki te whenua. I mua i te tīmatanga o tētahi atu wā wā, me whakahoki e koe a S2 ki te tūranga "Taima".
Porowhita Ātete
- E whakaatu ana te Pikitia 7 i te ara iahiko taketake 555 astable.
- I te aratau astable, ka utu te pūnga C1 mā roto i ngā ātete R1 me R2. I te wā e utu ana te pūnga, he teitei te putanga.
- I te wa o te voltage puta noa i C1 ka tae ki te 2/3 o te nui o te tukutagKa tukuna te hiko o e C1 mā te ātete R2, ā, ka iti te putanga.
- I te wa o te voltagka heke te e puta noa i a C1 ki raro iho i te 1/3 o te nui o te tukutagKa tīmata anō te utu a e C1, ka teitei anō te putanga, ā, ka tīmata anō te huringa.
- E whakaatu ana te hoahoa wā i te ahua 8 i te putanga taima 555 i te aratau astable.
- E ai ki te pikitia 8, mā te whakapūmau i te pine Tautuhi Anō (4) ka mutu te oscillator, ā, ka whakatakotoria te putanga ki raro. Ka tīmata anō te oscillator i te whakahokinga o te pine Tautuhi Anō ki te teitei.
- Te tatau i te wā, te auau me te huringa mahi E whakaatu ana te Pikitia 9 i te huringa katoa e 1 o tētahi ngaru tapawhā i hangaia e tētahi ara iahiko astable 555.
- Ko te wā (te wā hei whakaoti i te huringa kotahi) o te ngaru tapawhā ko te tapeke o ngā putanga teitei (Th) me te putanga iti (Tl). Arā: T = Th + Tl
- ko T te ira, i roto i ngā hēkona.
- Ka taea e koe te tatau i ngā wā teitei me ngā wā iti o te putanga (i roto i ngā hēkona) mā te whakamahi i ngā tātai e whai ake nei: Th = 0.7 * (R1 + R2) * C1 Tl = 0.7 * R2 * C1
- mā te whakamahi rānei i te tātai i raro nei, ka taea e koe te tatau tika i te wā. T = 0.7 * (R1 + 2*R2) * C1
- Hei kimi i te auau, tangohia te taurite o te wā, whakamahia rānei te tātai e whai ake nei:
- Ko f kei roto i ngā huringa ia hekona, i te hertz rānei (Hz).
- Mo te exampHei tauira, i roto i te ara iahiko astable i te ahua 7, mēnā he 68K ohms a R1, he 680K Ohms a R2, ā, he 1 micro Farad a C1, ko te auau he tata ki te 1 Hz:
- Ko te huringa mahi ko te ōrautagte roa o te wā e teitei ana te putanga i roto i te huringa katoa kotahi. Hei tauiraampHei tauira, ki te mea he teitei te putanga mō ngā hēkona Th, ā, he iti mō ngā hēkona Tl, ko te huringa mahi (D) koia tēnei:
- Heoi, me mōhio noa koe ki ngā uara o R1 me R2 hei tatau i te huringa mahi.
- Ka utu a C1 mā R1 me R2 engari ka tukuna mā R2 anake, nō reira ka nui ake te huringa mahi i te 50 ōrau. Heoi, ka taea e koe te whiwhi i tētahi huringa mahi e tata ana ki te 50% mā te whiriwhiri i tētahi huinga ātete mō te auau e hiahiatia ana kia iti ake ai a R1 i a R2.
- Mo te exampMena he 68,0000 ohms te R1, ā, he 680,000 ohms te R2, ka tata ki te 52 ōrau te huringa mahi:
- Ka whakatauritea te iti o te R1 ki te R2, ka tata ake te huringa mahi ki te 50%.
- Hei whiwhi i tētahi huringa mahi iti iho i te 50%, honoa he diode kia whakarara ki te R2.
Te whiriwhiri i ngā wāhanga RC mō te mahi Astable
- Kōwhiria a C1 i te tuatahi.
- Tātaihia te uara katoa o te huinga ātete (R1 + 2*R2) ka puta ai te auau e hiahiatia ana.
- Tīpakohia he uara mō R1, R2 rānei, ka tatau i te uara kē atu. Hei tauiraampHei tauira, me kī (R1 + 2*R2) = 50K, ā, ka tīpakohia e koe he ātete 10K mō R1. Kātahi me 20K ohm te ātete o R2.
Mō te huringa mahi e tata ana ki te 50%, tīpakohia he uara mō R2 he nui ake i a R1. Mena he nui a R2 i a R1, ka taea e koe te wareware i a R1 i roto i ō tataunga i te tuatahi. Hei tauiraampHei tauira, me kī ko te uara o R2 ka 10 whakareatia ki te R1. Whakamahia tēnei putanga whakarerekē o te tātai i runga ake nei hei tatau i te uara o R2:
- Kātahi ka wehea te hua mā te 10, neke atu rānei, hei kimi i te uara mō te R1.
- Mō ngā taima paerewa 555, whakamahia ngā uara ātete taima i waenga i te 1K ohms me te 1M ohms.
Porowhita Ātete Example
E whakaatu ana te Pikitia 10 i tētahi ohiroa ngaru tapawhā 555 me te auau o te 2 Hz me te huringa mahi o te 50 ōrau. Ina kei te tūranga "Tīmata" te pana SPDT S1, ka huri te putanga i waenga i te LED 1 me te LED 2. Ina kei te tūranga "Mutu" te S1, ka noho tonu te LED 1 ki te kā, ā, ka noho tonu te LED 2 ki te mate.
Ngā putanga mana iti
- He iti noa ngā āhuatanga o te paerewa 555 kāore e hiahiatia ana mō ngā ara iahiko e whakamahia ana e te pākahiko.
- Me whai i te iti rawa o te rōrahi whakahaeretage o te 5V, me te iahiko tuku marino teitei.
- I ngā whakawhiti putanga, ka puta he pikinga iahiko tae atu ki te 100 mA. Hei tāpiri, ko ōna whakaritenga tāuru me te iahiko paepae ka whakatakoto i te rohenga ki te uara ātete wā mōrahi, e whakawhāiti ana i te wā wā mōrahi me te auau astable.
- I whakawhanakehia ngā putanga CMOS iti-mana o te taima 555, pērā i te 7555, te TLC555 me te CSS555 ka taea te whakarite, hei whakarato i te mahi pai ake, inā koa i roto i ngā tono e whakamahia ana te pākahiko.
- He hototahi ki te pine me te taputapu paerewa, he whānui ake te voltage tukutage awhe (mo te examp(2V ki te 16V mō te TLC555) ā, me iti ake te iahiko whakahaere e hiahiatia ana.
- Ka taea hoki e rātou te whakaputa i ngā auau putanga teitei ake i te aratau pūmau kore (1-2 MHz, i runga i te taputapu) me ngā wā roa ake i te aratau pūmau kore.
- He iti te kaha o te iahiko whakaputa o ēnei taputapu ki te whakaritea ki te paerewa 555. Mō ngā kawenga neke atu i te 10 – 50 mA (i runga i te taputapu) me tāpiri e koe he ara iahiko whakanui iahiko i waenganui i te putanga 555 me te kawenga.
Mo etahi atu korero
- Whakaarohia tēnei he kupu whakataki poto ki te taima 555.
- Mō ētahi atu kōrero, kia mahara ki te ako i te pepa raraunga a te kaihanga mō te wāhanga motuhake e whakamahia ana e koe.
- Waihoki, ka taea te whakamana mā te rapu tere i runga i a Google, kāore he mea pototago ngā mōhiohio me ngā kaupapa e whakatapua ana ki tēnei IC i runga i te web.
- Mo te example, te mea e whai ake nei webKei te paetukutuku ētahi atu kōrero mō ngā putanga paerewa me ngā putanga CMOS o te taima 555. www.sentex.ca/~mec1995/gadgets/555/555.html.
FAQ
P: He aha te kaupapa o ngā tāurunga Whakaoho me ngā tāurunga Paepae i roto i te taima 555?
A: Mā te tāuru Trigger ka piki te putanga ina iti te rōrahitagKa whakamahia te e i te wā e aukati ana te tāuru paepae i te putanga mai i te teitei ina he teitei te voltage whakamahia ana.
P: He aha te whānuitanga o ngā uara ātete e taunakitia ana mō te wā i roto i te taima paerewa 555?
A: E taunakihia ana kia whakamahia ngā uara ātete i waenga i te 1K ohms me te 1M ohms mō te wā tika i roto i te whirihoranga taima 555 paerewa.
Tuhinga / Rauemi
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Akoranga Taima Jameco 555 [pdf] Aratohu Kaiwhakamahi Akoranga Taima 555, 555, Akoranga Taima, Akoranga |