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mars2014
modified 11 years ago

TTL indicator

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01:36:27
English: indicator logic levels for TTL chips. The ' H '-high voltage level, the ' L '-low and character ' R '-the State of uncertainty according to the indicator. Measure duplicated LEDs red-green-yellow. The indicator diagram begins with the input resistance before the first logical element. Generator and rectifier mode the blue led on the layout applied to demonstrate the operation of the indicator in the range changes of input voltage 0-6 v. repeating schema requires setting a variable resistance ' a zone of uncertainty '. The indicator is easy to work and thanks to the large number of light indication always caused by casual viewers and colleagues ' admiration. The schema can be simplified by removing one of the LEDs. But LEDs are suitable for the control of dynamic signals and the second indicator is useful when monitoring static voltage levels. RUS: Трехуровневый индикатор TTL микросхем. "H" - высокий уровень напряжения, "L" - низкий и символ "R" - состояние неопределенности по показаниям индикатора. Измерения дублируются светодиодами красный - зеленый - желтый. Схема самого индикатора начинается с входного сопротивления перед первым логическим элементом. Генератор и синий светодиод в режиме выпрямителя применен на макете для демонстрации работы индикатора в диапазоне изменения входного напряжения 0 - 6 В. При повторении схемы требуется настройка переменным сопротивление "зоны неопределенности". Индикатор удобен в работе и благодаря большому количеству световой индикации всегда вызывал у случайных зрителей и коллег восхищение. Схему можно упростить, удалив один из индикаторов. Но практически светодиоды удобны при контроле динамических сигналов, а второй индикатор удобен при контроле статических уровней напряжения.
published 11 years ago
NICK343
11 years ago
English
mars2014
11 years ago
English: indicator logic levels for TTL chips. The ' H '-high voltage level, the ' L '-low and character ' R '-the State of uncertainty according to the indicator. Measure duplicated LEDs red-green-yellow. The indicator diagram begins with the input resistance before the first logical element. Generator and rectifier mode the blue led on the layout applied to demonstrate the operation of the indicator in the range changes of input voltage 0-6 v. repeating schema requires setting a variable resistance ' a zone of uncertainty '. The indicator is easy to work and thanks to the large number of light indication always caused by casual viewers and colleagues ' admiration. The schema can be simplified by removing one of the LEDs. But LEDs are suitable for the control of dynamic signals and the second indicator is useful when monitoring static voltage levels.

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