Ko te motuhake o te ara iahiko whakakaha kaikohi tuwhera (OC kuwaha) o te NPN me te PNP: te whakaputanga whakawhiti o te whakakaha o te waiwai.

Ko te kaikohi tuwhera he tono motuhake mo te ara iahiko whakakaha triode. Ko te kaikohi o C kua whakaritea ki te taumata teitei, a ko te kaipatu o te E kua whakaritea ki te taumata iti. Ina tukuna e te turanga o B he tohu iti, ka puta te tohu whakawhiti kua kukū ki te kaikohi, ko te "1" i te ara iahiko matihiko. I etahi wa ka kiia ko te keeti OC.

I roto i te ahumahi aunoatanga, "PNP" me te "NPN" kua tika te whakaatu ko te putanga tohu o te PNP tuwhera kaikohi hiko hiko hiko me te putanga o te NPN tuwhera kaikohi hiko hiko hiko.

Ko te tauranga noa o te tuku hiko me te tohu o te kaikohi tuwhera PNP kei te taumata iti, e kiia ana ko te cathode noa.

Ko te tuku hiko me te tohu tauranga noa o te kaikohi tuwhera NPN kei ​​te taumata teitei, e kiia ana ko anode noa.

Nā te rerekētanga o te ahunga rerenga tohu me te aratau hononga kāpeka noa, me ōrite hoki te tohu PNP me te tohu NPN ki te polarity o te ara iahiko whiwhi e hāngai ana, ara, ka whiwhi iahiko whiwhi PNP te tohu PNP me te iahiko whiwhi NPN ka whiwhi tohu NPN.

Ko te momo puna me te momo awa ko nga whakapotonga o te "ara iahiko whakakaha puna" me te "iahiko whakahiato wai", he tirohanga tirohanga ki te ahunga rere o naianei o te whakakaha tohu.

Ka tukuna e te kaikohi kaikohi hiko toru he tohu iti, ka whakanuia ki te tohu whakawhiti kia puta ki te kaikohi, e rite ana ki te pukoro e rongo ana i te tohu tinana katahi ka whakaputa i te tohu whakawhiti. Na reira, he maha nga pukoro e whiriwhiri i tenei ahua o te momo whakaputa kaikohi tuwhera NPN me PNP. Ko te putanga o te putere o te encoder incremental he huringa o te taumata teitei me te iti o te putere, no reira he maha nga encoder incremental moata i whiriwhiri i tenei momo whakaputa kaikohi tuwhera o NPN me PNP.