PWM to sine

180

01:38:42

схема М.Вязаня. Двухканальный мостовой УНЧ на полевых транзисторах с выходной мощностью до 27 Вт с ФНЧ на LC-фильтре. Радиаторы для транзисторов VT1, VT2 не требуются, КПД 90%. Сигналы ШИМ должны быть строго противофазными и иметь частоту 100…200 кГц; 

http://nauchebe.net/2014/03/generaciya-zvuka-cherez-kanal-shim-v-sxemax-na-mikrokontrollere/

published 7 years ago

hurz

7 years ago

left diodes for both transistors are the wrong way around, for a good bootstrap voltage over supply and under ground level swap the diodes. One voltage from digital source is a little pessimistic 5V should be available and not just one volt.

PavelSafronov

7 years ago

@hurz, Thanks!

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