Вопросы в анализ принцип из работающий процесс из белый фотоэлектрический пайка утюг головка
The description of the working process of the thermocouple in the original text has been mentioned, so it will be misleading. for the convenience of description, the voltage of each pin of LM358 is represented by Vn.
The voltage V3 generated at both ends of the thermocouple is very weak, which can be seen from the voltage division ratio of the LM358 pin 2 resistance, the maximum is about 100mV. In fact, the thermocouple only comes into play when the T12 is de-energized!
The original text does not describe the timing circuit composed of 205 resistors and 104 capacitors on the 6th pin. In fact, T12 is only powered on within this time period. Когда 104 конденсатор is charged to make V6 higher than V5, it will be powered off; after power off, V3 is no longer 24V, and the voltage V3 on the thermocouple and the set value V2 In comparison, if it is low, V1 is low, the capacitor 104 is discharged at a given time, V6 is lower than V5, and the cycle of T12 re-energization Начинается, SO That The Temperature of the Пайка железо IS СОХРАНЕНО КОНСТАНТА.
The temperature setting V2 has a minimum value of about 10mV and a maximum value of about 100mV. T12 will continue to be heated by electricity since it is powered until V3 is greater than V2, and then enters the above constant temperature cycle.
Кроме В Тайминг Конденсатор 104, Другое Конденсаторы Are фильтр конденсаторы. В сложение, the D and S marks of TPC8107 on the figure are reversed.
Схема диаграмма из белый фотоэлектрический паяльник утюг
Байгуан пайка железо это электричество пайка железо произведено Байгуан Компания .
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