Добавил:
Upload Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:
Textbook_Masters.doc
Скачиваний:
0
Добавлен:
01.05.2025
Размер:
2.24 Mб
Скачать

8. Cheap Chip Can Drive

to boost

підвищувати

to run off

заміняти

a dishwasher

посудомийна машина

a shunt resistor

паралельний резистор

an appliance

прилад

interlock

блокування

high-end

сучасний, потужний

short circuit

коротке замикання

white goods

побутові прилади

consumption

споживання

average

середній

a pump

насос

a bootstrap capacitor

прискорюючий конденсатор

an evaluation board

демонстраційна плата

a circuit

схема; плата

to familiarize

знайомити

How do you boost electrical efficiency of the brushless motor in a dishwasher, refrigerator compressor, or other appliance? One way is to add a power inverter to match motor speed with load. This is just what appliance manufacturers have done with high-end white goods.

Now Mitsubishi Electric Europe B.V. claims it has an inverter that is economical enough for average household appliances. Mitsubishi’s Semiconductor European Business Group claims its new single-chip inverter, M81500FP, is the world’s smallest intelligent power module for the 90-watt range. It takes only three passive components – a ceramic bootstrap capacitor, a shunt resistor, and a second ceramic capacitor at the voltage supply pin – to operate the inverter.

At 17.5 millimeters by 11.93 millimeters, the entire printed circuit is designed for surface mounting, a low-cost automated process that bonds chips directly onto circuit boards without additional packaging. It is then run off the appliance’s microcontroller or digital signal processor.

The inverter, which is rated for 500 volts and 1 amp, not only drives the motor but protects against under-voltage, interlock, short circuit, and over-temperature. In case of short circuit, it can turn off the device within 15 microseconds.

The thinking behind all this engineering is to make an inverter inexpensive enough to use with just about any appliance.

The inverter reduces energy consumption, and enables motors and pumps to run smoother and with less noise. According to Van Trung Nguyen, general manager of Power Semiconductors Europe, the design “opens up new marketing and sales opportunities for the manufacturers.”

In addition to the inverter itself, Mitsubishi is offering an evaluation board (EVBM81500FP) that contains a microcontroller so engineers can familiarize themselves with the technology.

Speech patterns

You are not just to him.

Ви до нього несправедливі.

This is just what you wanted.

Це саме те, що ви хотіли.

The train has just come.

Потяг тільки-но прийшов.

I just call to say ...

Я просто дзвоню, щоб сказати ...

just the same

все одно

Exercise 1. Say whether the statements are TRUE or FALSE.

1. A dishwasher, refrigerator compressor and other appliances use an internal combustion engine. 2. The company Mitsubishi Electric Europe B.V. has suggested a new processor. 3. The new device is placed on a single chip. 4. It contains five passive components. 5. The size of the entire printed circuit is a square inch. 6. The inverter protects the appliances against short circuit. 7. It takes only 1 second to turn off the device in case of short circuit. 8. The inverter increases the noise of the appliances.

Exercise 2. Give synonyms to the following words from the text:

an appliance, goods, household, intelligent, entire, to bond, to protect, to provide, opportunity, to familiarize.

Соседние файлы в предмете [НЕСОРТИРОВАННОЕ]