Китайские светодиодные ночники, платы
Схема простенькая, одна полуволна тока сети идет через одну пару светодиодов, вторая - через другую (в правом ночнике через синий светодиод). Причем в левом ночнике диоды в одинаковых корпусах, в правом - все разные :). Балласт классический для таких схем - пленочный конденсатор, в правом ночнике их аж два (соединенные параллельно). Параллельно конденсаторам включены разрядные резисторы. Также есть токоограничительные резисторы - для уменьшения токового броска при включении, который возникает при заряде балластных конденсаторов.
- Раздел: Хобби
- Дата съёмки: 01.07.2014 23:13
- Дата загрузки фото: 02.07.2014 01:43
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