22/06/2015 OqueSinkingeSourcing?NationalInstruments

http://digital.ni.com/public.nsf/allkb/ED8B8E27EC96600C862576A800440FC9 1/2

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OqueSinkingeSourcing?

Hardware:FieldPoint,DigitalI/O(DIO),CompactFieldPoint,MultifunctionDAQ(MIO)

Problema:Oquesignificamostermossinkingesourcing?

Soluo:

Ostermossinkingesourcingsereferemaotipodeentradasesadasdigitaisusadas.UmaE/S(entrada/sada)digitaldotiposinkingforneceumterra.UmaE/Sdigitaldotiposourcingforneceumafontedetenso.

Considereumcircuitosimplesqueconsistedeumaentradadigitalconectadaaumasadadigital.Ocircuitoprecisadeumafontedetenso,umterraeumacarga.UmaE/Sdigitaldotiposourcingforneceatensonecessriaparaocircuito.UmaE/Sdigitaldotiposinkingforneceoterranecessrionocircuito.Aentradadigitalforneceacarganecessriaparaqueocircuitofuncione.

Afigura1mostraumasadadigitaldotiposinkingqueconectadaaumaentradadigitaldotiposourcing.Nestecircuitoaentradadigitaldotiposourcingforneceatensoeacarga.Asadadigitaldotiposinkingcontrolaalinhautilizandoumtransistorparadeixaralinhanoestadoalto(+V)ouparaaterraralinhaem0V.

Afigura2mostraumasadadigitaldotiposourcingqueconectadaaumaentradadigitaldotiposinking.Nestecircuito,asadadigitaldotiposourcingforneceatensoeaentradadigitaldotiposinkingforneceacargaeoterra.Asadadigitalcontrolaalinhausandoumtransistorparadeixaralinhaa0Vouparaelevaralinhaa+V.

Umavezquevocprecisadeambos,umafontedetensoeumterrademaneiraacriarumcircuitocompleto,vocprecisaterumaentradaousadadotiposourcingconectadaaumaentradaousadadotiposinking.Sevocdesejaconectarumaentradadotiposourcingaumasadadotiposourcingouumaentradadotiposinkingaumasadadotiposinking,vocprecisardeumresistoradicional.ParamaisinformaessobrecomoconectarduasE/Sdomesmotipo,porfavoracesseKnowledgeBase2K0D6H5F:HowdoIConnectTwoSinkingI/OorTwoSourcingI/OTogether?(EmIngls).

LinksRelacionados:

KnowledgeBase2K0D6H5F:ConnectingTwoSinkingI/OorTwoSourcingI/OTogether(EmIngls)

Melhoresuaexperinciani.com.Faaloginoucrieumperfildeusurio

22/06/2015 OqueSinkingeSourcing?NationalInstruments

http://digital.ni.com/public.nsf/allkb/ED8B8E27EC96600C862576A800440FC9 2/2

KnowledgeBase3E6AIAFL:MSeriesMaximumSink/SourceCurrentSpecificationsforPFI,DIOandCounters(EmIngls)KnowledgeBase1EPBH9LK:CanIConnectaCoilRelayDirectlytomyFPDO400orFPDO401?(EmIngls)

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DatadoRelatrio:25/01/2002ltimaAtualizao:08/03/2013IdentificaodoDocumento:2HOE7K5F

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