A feedback circuit consisting of a single-pole lowpass active filter and a Howland source diverts current from the phototransistor's base to avoid saturation at excessive background-light levels
| Authors | JC Ferrer, A Garrigós |
| Main Document | Article «Feedback circuit enhances phototransistor's linear operation» |
| Description | Figure 2 |
| File Format / Size | PDF / 23 Kb |
| Document Language | English |
Other Materials from the Main Document
- Article «Feedback circuit enhances phototransistor's linear operation»
- Figure 1. Varying levels of ambient-light flux affect the bias point of a basic phototransistor circuit. Higher levels force the bias point closer to saturation and compress the desired signal, VOUT
- Figure 2. A feedback circuit consisting of a single-pole lowpass active filter and a Howland source diverts current from the phototransistor's base to avoid saturation at excessive background-light levels
