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Перевод: phototransistor

[существительное]
фототранзистор

Тезаурус:

1. If the phototransistor detector is picking up mains lights -especially from a fluorescent tube - there may be a buzzing sound from the loudspeaker and it would be necessary to shield it from the light to prevent this from happening.
2. Note that both the l.e.d. and phototransistor are very directional - the tops are the sensitive surfaces.
3. A light source and photosensitive device photodiode, phototransistor or photovoltaic cell - are placed on opposite sides of the disc, so that the device is illuminated whenever a disc slot is in front of the light source.
4. The range could be extended by several meters by using a glass or plastic lens to focus the light from the l.e.d. into a parallel beam then back into a spot on the sensitive area of the phototransistor using another lens.
5. One student holds an end of the optical fibre on top of the l.e.d. in the transmitter and another holds the distant end on the top of the phototransistor.
6. The transmitter should now be operated and the l.e.d. held pointing downwards approximately 10cm away from the top of the phototransistor on the receiver unit.
7. This consists of a sensitive phototransistor.
8. The phototransistor picks up the light emitted by the l.e.d. in the transmitter section and converts it into an analogue electrical signal.