Definition of photodiode in English:
A semiconductor diode that, when exposed to light, generates a potential difference or changes its electrical resistance.
- The receiver uses a photocell or photodiode to detect the light.
- Semiconductor photodiodes offer high-sensitivity and low-noise operation, enabling them to detect very low light levels; attenuating filters must be used for high powers.
- The sensor consists of a silicon photodiode, with a pre-amp that gives enough signal for the voice channel of a small radio transmitter.
Definition of photodiode in:
- British & World English dictionary
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