Discrimination of the base of the triode: According to the schematic diagram of the structure of the triode, we know that the base of the triode is the common pole of the two PN junctions in the triode. Therefore, when judging the base of the triode, as long as the common pole of the two PN junctions is found, That is the base of the triode. The specific method is to adjust the multi-meter to the R1k block of the electric block, first place the red test lead on one foot of the triode, and use the black test lead to touch the other two feet of the triode. If it is fully connected twice, the red test lead The foot placed is the base of the triode. If it is not found once, change the red test lead to the other foot of the triode and test it twice; if it is not found, change the red test lead again and test it twice. If you haven't found it yet, use the black test lead to place it on one foot of the triode, and use the red test lead to test it twice to see if it is fully connected. If it fails once, then replace it. In this way up to 12 times, the base can always be found.
Tranzistorių tipų diskriminacija: Yra tik dviejų tipų triodai, būtent PNP tipas ir NPN tipas. Vertinant tereikia žinoti, ar bazė yra P-tipo, ar N-tipo. Kai naudojamas daugiametis R1k blokas, juodas bandymo laidas rodo teigiamą maitinimo šaltinio polių. Jei juodas bandymo laidas yra prijungtas prie pagrindo, jis yra įjungtas, o tai rodo, kad tranzistoriaus bazė yra P-tipo, o tranzistoriaus - NPN-tipo. Jei raudonas bandymo laidas yra prijungtas prie pagrindo, tai reiškia, kad triodo pagrindas yra N-, o triodas yra PNP- tipo.
