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emy_dx

Schema invertor Stern WM200INVA

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Pune osciloscopul in pinul 4 al UC3846 cu finalii alimentati. Acolo se face controlul in curent si trebuie sa ai un semnal in dinte de fierastrau. Semnalul in acest pin vine din traful de curent, cele 4 diode si rezistentele pe care te-a indrumat cineva mai sus sa le verifici. Fara semnal in acel pin, UC-ul va functiona la umplere maxima. Amplitudinea impulsurilor din pinul 4 actioneaza invers proportional asupra factorului de umplere pe iesiri.

 

LE

Din ce imi aduc aminte, semnalul in pinul 4 are amplitudinea de 1V, asa ca seteaza atenuatorul axei Y corespunzator.

Edited by CIBY2

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