fig8
![A wearable assistive system for the visually impaired using object detection, distance measurement and tactile presentation](https://image.oaes.cc/c260df00-d2fe-4cab-bca5-4239647f97ff/ir3024.fig.8.jpg)
Figure 8. Structure of the signal amplifier circuit. (A) Darlington transistor; (B) Signal amplifier board.
Figure 8. Structure of the signal amplifier circuit. (A) Darlington transistor; (B) Signal amplifier board.
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