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| Kristallichtverstärker m; lichtempfindlicher Transistor | |||
| Fototransistor m (with internal amplification of the carrier current produced by light); lichtempfindlicher Transistor (with internal amplification of the carrier current produced by light) | |||
| Fototransistor m; Phototransistor m | |||
| Phototriode f | |||
| phototransistor: 5 phrases in 3 subjects |
| Earth sciences | 1 |
| Electronics | 3 |
| Physics | 1 |