все хорошо!
Информация о работе
Подробнее о работе
Вариант 2. 1. Read and translate the text in a written form. VOLTAGE TESTER SCREWDRIVER: A test light, test lamp, voltage tester, or mains tes
- 4 страниц
- 2022 год
- 0 просмотров
- 0 покупок
Гарантия сервиса Автор24
Уникальность не ниже 50%
Фрагменты работ
Вариант 2.
1. Read and translate the text in a written form.
VOLTAGE TESTER SCREWDRIVER:
A test light, test lamp, voltage tester, or mains tester is a very simple piece of electronic test equipment used to determine the presence or absence of an electric voltage in a piece of equipment under test. The test light is simply an electric lamp connected with one or two insulated wire leads.
Often, it takes the form of a screwdriver with the lamp connected between the tip of the screwdriver and a single lead that projects out the back of the screwdriver. By connecting the flying lead to an earth (ground) reference and touching the screwdriver tip to various points in the circuit, the presence or absence of voltage at each point can be determined and simple faults detected and traced to their root cause. For low voltage work (for example, in automobiles), the lamp used is usually a small, low-voltage incandescent light bulb. These lamps usually are designed to operate on approximately 12 V. For line voltage (mains) work, the lamp is usually a small neon lamp connected in series with an appropriate ballast resistor. These lamps often can operate across a wide range of voltages from 90 V up to several hundred volts. In some cases, several separate lamps are used with resistive voltage dividers arranged to allow additional lamps to strike as the applied voltage rises higher; with the lamps mounted in order from lowest voltage to highest, this minimal bar graph provides a crude indication of voltage.
ВОЛЬТМЕТР
Контрольная лампа, тестовая лампа или тестер напряжения — это очень простая часть электронного испытательного оборудования, которая используется для определения наличия или отсутствия электрического напряжения в тестируемой части оборудования. Контрольная лампа представляет собой просто электрическую лампу, соединенную с одним или двумя изолированными проводами.
Форма заказа новой работы
Не подошла эта работа?
Закажи новую работу, сделанную по твоим требованиям
