modified 8 years ago

Дверной звонок одной тональности с возможностью регулирования звуковой частоты сигнала

01:28:36

R1, R4 — резисторы МЛТ-0,5,  5,6 кОмR2, R3 — резисторы МЛТ-0,5,  62 кОмR5 — подстроечный резистор СП3-38Б, 47 кОмC1, С2 — конденсаторы К50-35, 10 мкФ, 25 ВS1- кнопка А1 0,4-127VT1, VT2 — транзисторы ГТ109ЖVT3 — транзистор ГТ402ИВ1 — динамик 0,5ГД-17 (8 Ом)

published 8 years ago

Thrashard96

8 years ago

I don't know that doorbell sound you're expecting to get from this circuit. The output is DC, not AC. Basically what you'd get at best would be the speaker cone moving in one direction, only once.

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