V mch bng Proteus. B1: o kch thc chn ca linh kin. VD: Opto PC817 c 4 chn, khong cch gia 12: 100th(2.54mm); 1-4:200th(7.62mm) B2: S dng cng c dimension trn Toolbar Edit Objests v kch thc nh o. C th chuyn i gia h mt v inch bng phm tt "m" hoc click vo button thanh cng c. trn

B3: S dng cc Hole Pad trn Toolbar Edit Objects. Gi s chn kiu "Round", chn kch thc Padstack v drill (VD: C-60-30), sau drag v click vo cc u mi tn ch kch thc v trc ln lt ht 4 chn.

B4: Xa cc mi tn ch kch thc bng cc Double Right Click vo mi tn v v

hnh dng ca linh kin bng cng c 2D Graphics. C th chuyn i t l "Grid" bng cc phm F2, F3 hoc F4 cho ph hp vi hnh v.

B5: t number cho cc chn bng cch right click vo chn cn t number --> Edit properties hoc Left Click mt ln na.

B6: To th vin cho footfrint, chn footprint va v bng cch rightclick v drag sao cho ng nt t bao ht footprint, sau chn Library-->Make Package.

B7: Chn cc mc hoc to mi nh trong hnh v --> n OK. Bn c th xem li hnh nh 3D ca footprint mi v bng Tab "3D Visualiazation" trong Make Package.

V sau khi v mch in c linh kin PC817 ch cn vo Package Mode, bm vo nt P, g Keywords: PC817 l c.

Bi sau mnh s tng hp cch v mch in v mt s vn cn lu . Mong cc bn ng h ha. Di y l 1 mch in mnh v bng Proteus.

Cch v mch in bng Proteus. Phn 1: S nguyn l. Cho d bn v mch in bng phn mm no i na th s nguyn l l ci quan trng nht u tin chng ta phi lm. So vi cc phn mm khc nh Eagle, Orcad, WorchBench ... th mnh thch nht Proteus v tnh tin li ca n trong cc thao tc v mch. Mnh s khng i su vo ci s nguyn l ny nhiu v mi ngi chc cng thng tho i vi Isis. Tuy nhin cn phi lu mt s ci: 1/ S nguyn l phc v cho m phng khc vi S v mch in. Cc bn phi hnh dung trc cc linh kin s c b tr trong mch v hnh dng v kch thc chn ca n. 2/ Khi ly linh kin trong th vin v snl, tr nhng linh kin c trong th vin, bn khng cn ch n m s m ch n PCB ca linh kin. V d: Trong th vin khng c bng A1015 (PCB: TO92), bn ch cn ly loi bng tng t c PCB l TO92 v d 2N3906.

3/ Kim tra s chn gia A1015 v 2N3906. Khi vo Packaging Tool ca 2N3906 bn s thy cc chn ca n khc vi A1015 bn sa li cho ging v n nt Assign Package(s) v lm theo hng dn.

4/ Nhng linh kin khc khng c PCB trong th vin, bt buc cc bn phi to footprint mi. Cch v mch in bng Proteus. Phn 2: V mch in Sau khi c c s nguyn l t Isis. Mnh ly th d b ngun 5VDC sau y, trong cc bn ch hai linh kin FUSE 1A v LED D1 mnh to sn footprint v th vin ko c. Kim tra li ln cui v save li. B1/ Trn thanh cng c bm vo biu tng ARES hp thoi nhc bn Save li s xut hin --> OK, proteus s t ng lin kt s nguyn l ca bn vi ARES.

B2/ Ca s ARES xut hin, trc tin cc bn cn phi v hnh dng ca v kch thc ca bo mch. S dng cc cng c 2D graphic v, ng bao ca bo mch bn phi chn Layer: Board Egde (mu vng). Nu khng mch in s chy ra khi ng bao khi Autoroute.

B3/ Sp xp linh kin vo board c hai cch Auto v manual. + Auto: bn nhp vo biu tng Auto-placer trn thanh cng c, bn tri ca s Autoplacer l list linh kin, bn chn All nu mun my t xp tt c, bn phi l cc thng s khong cch gia cc linh kin. Sau khi chnh nh xong nhn OK. Thng thng cch ny ch s dng cho nhng bo mch ln vi s lng linh kin nhiu, mnh khng s dng cch ny v my xp ko c nh mun ca mnh.

+Manual: Bn nhn Undo, list linh kin li xut hin phn Component. Bn t sp xp bng cch chn linh kin trong Component v b tr trong mch. Ci ny ty theo thm m ca mi ngi. C th xoay linh kin bng phm +/-.

Trn hnh v bn thy rt nhiu mi tn v ng ni mu vng, bt ri mt bn tt grid bng phm "G", nhp vo biu tng Edit Layer Color trn thanh cng c, trong ca Displayed Layers b cc mc Ratsnest v Vectors i. B4/ Sau khi sp xp linh kin xong nhp vo biu tng Autorouter.

Nhp vo mc Edit Strategies trong ca s Auto Router. Trong ny cc bn c th chnh layer, nt mch, khong cch gia cc nt, kch thc via. + Layer: Ares cho php bn v mch in bng nhiu lp.V l mch v d n gin nn mnh chn 1 lp. Trong cc mc pair 1->4 ch Top Copper cn cc ci khc bn chn none. + Nt mch: ARES phn bit c u l nt POWER, u l nt SIGNAL nh vo s nguyn l chng ta v. Chn Strategy l POWER, phn Trace style c cc c t T8 - T500, mnh chn T40. Tng t i vi SIGNAL.

+ Khong cch gia cc nt chnh nh mc Design Rules. Bn c th tng gim ty theo chc nng ca mch nu yu cu v chng nhiu trn board cao.

Nhn OK v ch my Auto Route cho bn. Sau khi xong nu ko thch bn c th Undo v chnh nh li, hnh nh Orcad lm ci ny hi kh nu ko quen cc thao tc. B5/ Sau khi my Route xong, s c thng bo phn trm cc nt v trong mch, nu 100% th OK, cn nu ko cng vic cn li l ca bn. Bn nhp vo biu tng Conectivity Rules cheker kim tra nhng nt cn thiu v bn phi t v ly. Bc ny mnh dng y v cn ty thuc vo mch. B6/ Sau khi hon tt phn mch cn li l cc ch thch trn mch. Bn c th s dng cc cng 2D Graphic v vi ty thch. Nh vy l xong. Mch sau khi hon tt.

Chc cc bn Thnh cng! y l sn phm:

In n trong ARES. Ko t bn mi vo ngh u mc phi nhng vn ny: - Film ca bo sau khi in kch thc chn linh kin ln hoc nh hn vi linh kin tht. - Lp linh kin b chng ln lp mch in. - Mch in sau khi ra rt p nhng khi hn pht hin linh kin u b ngc chn. - Nhng bn lm mch bng giy i phi tn nhiu giy cho 1 bo mch v li i.v.v.. Cc vn ny u c th khc phc mt cch d dng bng ARES. Sau khi hon tt phn v mch in nhp vo Print Layout in film. * i vi nhng bn khng c sn my in, bn c th xut layout mnh ra nh dang file .pdf v em ra tim: Trong ca s Print Layout mc Layouts/Artworks ch check chn lp mch in (VD: Bottom Copper) v Board Edge, mc Scale mc nh l 100%, mc Reflections chn Normal v nu Mirror chn linh kin s b ngc cc mc khc gi nguyn. Chnh v tr ca board trong kh A4 bng cch Right Click vo khung Preview. Printer chn CutePDFWriter --> OK xut hin ca s yu cu bn t tn file.pdf --> hon tt. * i vi nhng bn c my in th vn nh trn v i Printer thnh tn my in ca bn --> OK

Cng c 3D Visualization Bn mun xem hnh nh 3D ca bo sau khi lm: Menu --> Output --> 3D Visualization Post th mch v d trn cho cc bn xem. Top view