Ireto hevitra manaraka ireto dia matetika no raisina rehefa manamboatra singa PCB.

1. Birao PCB shape match the whole machine?

2. Mety ve ny elanelana misy eo amin’ireo singa? Misy ambaratonga na haavon’ny fifandirana?

3. Mila foronina ve ny PCB? Voatahiry ve ny sisin’ny fizotrany? Are mounting holes reserved? How to arrange the positioning holes?

4. Ahoana ny fametrahana sy ny hafanana ny maodelin’ny herinaratra?

5. Is it convenient to replace the components that need to be replaced frequently? Mora azo ovaina ve ireo singa azo ovaina?

6. Heverina ve ny elanelana misy eo amin’ny singa mafana sy ny singa fanafanana?

7. Ahoana ny fahombiazan’ny EMC an’ny tabilao manontolo? How can layout effectively enhance anti-interference ability?

Ho an’ny olan’ny elanelam-potoana eo anelanelan’ny singa sy ny singa, mifototra amin’ny takian’ny halaviran’ny fonosana samihafa sy ny toetran’ny Altium Designer ihany, raha voafaritry ny lalàna ny famerana, dia sarotra loatra ilay toerana ary sarotra tanterahina. Misy tsipika naseho teo amin’ny sosona mekanika hanondroana ny refy ivelany amin’ireo singa, toy ny aseho amin’ny sary 9-1, ka rehefa manatona ireo singa hafa dia fantatra ny elanelam-potoana eo ho eo. Tena azo ampiharina ho an’ny vao manomboka izy io, fa ahafahan’ny vao manomboka mamorona fahazarana mamorona PCB tsara ihany koa.

Faneriterena amin’ny firafitry ny singa PCB

Sary 9-1 Tariby mpanampy mekanika

Miorina amin’ny fiheverana sy fandalinana etsy ambony, ny fitsipika famerana PCB mahazatra dia azo sokajiana toy izao.

Element arrangement principle

1. Amin’ny toe-javatra mahazatra, ny singa rehetra dia tokony alamina amin’ny faritra mitovy amin’ny PCB. Rehefa masiaka loatra ilay singa ambony, dia azo apetraka eo amin’ny sosona ambany ny singa sasany manana halavany voafetra sy ambany ny lanjan’izy ireo (toy ny fanoherana puce, capacitance puce, chip IC, sns.).

2. On the premise of ensuring the electrical performance, the components should be placed on the grid and arranged parallel or vertically to each other in order to be neat and beautiful. Amin’ny toe-javatra mahazatra, ny singa dia tsy avela hifanindry, ny fandaminana ny singa dia tokony ho matevina, singa ampidirina ary singa famoahana araka izay azo atao ankoatra ny tsirairay, dia tsy miseho crossover.

3, mety misy herinaratra avo eo anelanelan’ny singa na tariby sasany, tokony hampitombo ny halaviran’izy ireo, mba tsy hiteraka làlana fohy tsy nahy noho ny fivoahana, ny fahatapahana, ny fisehony araka izay azo atao mba handinihana ny fisian’ireo habaka famantarana ireo.

4. Ireo mpiorina manana herinaratra avo lenta dia tokony alamina araka izay azo atao amin’ny toerana tsy mora idiran’ny tanana mandritra ny fanaovana debugging.

5, located at the edge of the plate components, should try to do two plate thickness from the edge of the plate.

6, components should be evenly distributed on the whole board, not this area dense, another area loose, improve the reliability of the product.

Follow the layout principle of signal direction

1. Aorian’ny fametrahana ny singa raikitra dia alaharo tsirairay ny toerana misy ny faritra misy fizaran-tany arakaraka ny làlan’ny famantarana, miaraka amin’ny singa fototra ao amin’ny faritra misy azy tsirairay avy ho foibe ary manatanteraka ny lamina eo an-toerana manodidina azy.

2. Ny firafitry ny singa dia tokony ho mety amin’ny fivezivezan’ny famantarana, mba hitazoman’ny famantarana izany lalana izany hatrany araka izay tratra. In most cases, the signal flow is arranged from left to right or from top to bottom, and components directly connected to input and output terminals should be placed near input and output connectors or connectors.

Fisorohana ny fahatapahana elektromagnetika

Faneriterena amin’ny firafitry ny singa PCB

Sary 9-2 Fametrahana ny inductor miaraka amin’ny inductor perpendicular hatramin’ny 90 degre

(1) For components with strong radiation electromagnetic fields and components with high sensitivity to electromagnetic induction, the distance between them should be increased, or a shielding cover should be considered for shielding.

(2) Try to avoid high and low voltage components mixed with each other and strong and weak signal components interlaced together.

(3) for components that will produce magnetic fields, such as transformers, loudspeakers, inductors, etc., attention should be paid to reducing the cutting of magnetic lines on printed wires when layout, and the magnetic field direction of adjacent components should be perpendicular to each other to reduce the coupling between each other. Ny sary 9-2 dia mampiseho ny fandaminana ny inductors 90 ° perpendicular amin’ny inductor.

(4) Ny loharano manelingelina na ny modely mora mikorontana, ny fonosana miaro dia tokony hipetraka tsara. Ny sary 9-3 dia mampiseho ny fandaminana fonosana ampinga.

Faneriterena ny fitsabahana amin’ny hafanana

(1) Ny singa miteraka hafanana dia tokony hapetraka amin’ny toerana mahomby amin’ny fandroahana hafanana. Raha ilaina dia misy radiatera misaraka na mpankafy kely azo apetraka hampihena ny mari-pana ary hampihena ny fiatraikany amin’ireo singa mpifanila vodirindrina aminy, araka ny hita eo amin’ny sary 9-4.

(2) Ny sasany amin’ireo birao mitambatra herinaratra avo lenta, fantsom-pahefana matanjaka, mpanohitra sns, dia tokony alamina amin’ny toerana mora fandroahana ny hafanana, ary sarahina amin’ireo singa hafa amin’ny halavirana iray.

Faneriterena amin’ny firafitry ny singa PCB

Sary 9-3 Famolavolana ny fonon’ampinga

Faneriterena amin’ny firafitry ny singa PCB

Sary 9-4 Fanaparitahana hafanana ho an’ny layout

(3) Ny singa mora tohina dia tokony ho akaikin’ny singa refesina ary lavitra ny faritra avo ny hafanana, mba tsy ho voan’ny singa hafanana hafainganam-pandrefesana hafa ka hiteraka tsy fetezan-draharaha.

(4) Rehefa apetraka amin’ny lafiny roa ny singa dia matetika tsy apetraka amin’ny sosona ambany ny singa fanafanana.

Fitsipika momba ny firafitra singa azo ovaina

Ny firafitry ny singa azo ovaina toy ny potentiometers, ny capacitors miovaova, ny coil inductance azo ovaina ary ny switch-micro dia tokony handinika ireo fepetra takiana amin’ny milina iray manontolo: raha ahitsy ivelany ny masinina dia tokony ampifanarahana amin’ny toeran’ny knob fanitsiana eo amin’ny tontonana chassis; Raha misy fanitsiana ao anaty masinina dia tokony apetraka amin’ny PCB izay mora ny manitsy azy.