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Консультация № 197208
26.11.2019, 11:57
0.00 руб.
30.11.2019, 16:05
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Здравствуйте, уважаемые эксперты! Прошу вас ответить на следующий вопрос:
помогите пожалуйста решить задачу или подскажите с формулами к решению. буду благодарен за то и другое. спасибо заранее!
В биполярном транзисторе, включенном по схеме с общим эмиттером, ток базы I Б=20мкА ток коллектора I К=1ма. Определить коэффициенты передачи тока эмиттера a(альфа) и b(бетта) , если током I КО можно пренебречь.
помогите пожалуйста решить задачу или подскажите с формулами к решению. буду благодарен за то и другое. спасибо заранее!
В биполярном транзисторе, включенном по схеме с общим эмиттером, ток базы I Б=20мкА ток коллектора I К=1ма. Определить коэффициенты передачи тока эмиттера a(альфа) и b(бетта) , если током I КО можно пренебречь.
Обсуждение
27.11.2019, 14:01
общий
это ответ
Здравствуйте, davleyshin!
Дано: Ток базы IБ = 20 мкА, ток коллектора IК=1ма .
Вычислить коэффициенты передачи тока эмиттера [$945$] и [$946$] .
Решение: Вы просили "подскажите с формулами к решению" - прилагаю к Ответу 2 хороших статьи в архиве, где простым языком и с картинками описаны принципы работы биполярных транзисторов с популярными формулами. Я очистил эти статьи от рекламной мерзости. Но Вы можете также почитать их в источниках :
Биполярные транзисторы Ссылка1
Коэффициент передачи тока эмиттера биполярного транзистора Ссылка2
Для решения Вашей задачи нужны только 2 простейших формулы :
Отношение тока коллектора к току базы [$946$] = IК / IБ = 1мА / 20 мкА = 1000 / 20 = 50
Отношение тока коллектора к току эмиттера [$945$] = IК / IЭ = IК / (IК + IБ) = 1мА / (1+0,02)мА = 1000 / 1020 = 0,98
Ответ: [$945$] = 0,98 , [$946$] =50
см также ru.wikipedia.org/wiki/Биполярный_транзистор
Дано: Ток базы IБ = 20 мкА, ток коллектора IК=1ма .
Вычислить коэффициенты передачи тока эмиттера [$945$] и [$946$] .
Решение: Вы просили "подскажите с формулами к решению" - прилагаю к Ответу 2 хороших статьи в архиве, где простым языком и с картинками описаны принципы работы биполярных транзисторов с популярными формулами. Я очистил эти статьи от рекламной мерзости. Но Вы можете также почитать их в источниках :
Биполярные транзисторы Ссылка1
Коэффициент передачи тока эмиттера биполярного транзистора Ссылка2
Для решения Вашей задачи нужны только 2 простейших формулы :
Отношение тока коллектора к току базы [$946$] = IК / IБ = 1мА / 20 мкА = 1000 / 20 = 50
Отношение тока коллектора к току эмиттера [$945$] = IК / IЭ = IК / (IК + IБ) = 1мА / (1+0,02)мА = 1000 / 1020 = 0,98
Ответ: [$945$] = 0,98 , [$946$] =50
см также ru.wikipedia.org/wiki/Биполярный_транзистор
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