The circuit shown can be used in an audio link using visible light or IR. Any photo transistor can be used and the output is applied to the input of an audio amplifier. The circuit can also be used with low frequency digital signals.
The circuit shown can be used in an audio link using visible light or IR. Any photo transistor can be used and the output is applied to the input of an audio amplifier. The circuit can also be used with low frequency digital signals.
