Phototransistor

{
  "id": "MLC-T-IND-004277",
  "term": "Phototransistor",
  "field": "Industrial and trades",
  "definition": "A bipolar junction transistor (BJT) that is sensitive to light, where incident light acts as the base current to control a larger collector current. It amplifies the light-generated current, making it more sensitive than a photodiode. Phototransistors are used in optical sensors, light-activated switches, and optocouplers.",
  "subject": "Energy and utilities",
  "see_also": [
    "photodiode"
  ],
  "translations": {
    "de": "Fototransistor",
    "es": "fototransistor",
    "fr": "phototransistor"
  },
  "url": "https://mlchart.com/terminology/industrial/phototransistor/"
}