ÓÑÈËÈÒÅËÜ ÌÎÙÍÎÑÒÈ ÈÌÏÓËÜÑÍÛÉ - ÷àñòü 4

Ñóùåñòâóåò íåñêîëüêî âèäîâ ñõåì òåðìîñòàáèëèçàöèè[5,6]. Èñïîëüçîâàíèå ýòèõ ñõåì çàâèñèò îò ìîùíîñòè êàñêàäà è òðåáîâàíèé ê òåðìîñòàáèëüíîñòè. Â äàííîé ðàáîòå ðàññìîòðåíà  ýìèòòåðíàÿ òåðìîñòàáèëèçàöèÿ: .

4.4.1Ýìèòòåðíàÿ òåðìîñòàáèëèçàöèÿ

Ðàññìîòðèì ýìèòòåðíóþ òåðìîñòàáèëèçàöèþ, ñõåìà êîòîðîé ïðèâåäåíà íà ðèñóíêå (4.3). Ìåòîä ðàñ÷¸òà è àíàëèçà ýìèòòåðíîé òåðìîñòàáèëèçàöèè ïîäðîáíî îïèñàí â [5,6].

Ïðè ðàñ÷¸òå ýëåìåíòîâ ñõåìû âûáèðàåòñÿ ïàäåíèå íàïðÿæåíèÿ Uý íà ñîïðîòèâëåíèè Rý (â èíòåðâàëå 2-5Â), ðàñ÷èòûâàþòñÿ òîê äåëèòåëÿ Iä, íàïðÿæåíèå ïèòàíèÿ ÅÏ, ñîïðîòèâëåíèÿ Rá1, Rá2, RÝ.. Âûáðàíî íàïðÿæåíèå Uý=3Â.

 

     Åï

                                                                  RÁ1                                       RÊ

                                                             a                                                CP

                                            CP

                                                                  RÁ2                                       RÝ                       ÑÝ                  RH

Ðèñóíîê 4.3 – Ñõåìà ýìèòòåðíîé òåðìîñòàáèëèçàöèè

Òîê áàçîâîãî äåëèòåëÿ íàõîäèòñÿ ïî âûðàæåíèþ:

,                                                                  (4.15)

ãäå

.                                                                   (4.16)

Ñîïðîòèâëåíèÿ Rá1, Rá2, RÝ îïðåäåëÿþòñÿ âûðàæåíèÿìè:

                                                                      (4.17)

                                        (4.18)

                                                    (4.19)

Íàïðÿæåíèå ïèòàíèÿ ÅÏ:      ÅÏ=UÊ0+ UÝ+.URK                                                             (4.20)

Ïîñëå ïîäñòàíîâêè ïîëó÷àþòñÿ ñëåäóþùèå ðåçóëüòàòû:

.                                                 

.                                                                          

.                                             

 Â     

 êÎì.                    

Ñîäåðæàíèå  Íàçàä  Âïåðåä

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