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50 Khz center frequency optical transmitter

2016-04-01 12:29  
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The pulse repetition rate is relatively insensitive to temperature, and power supply voltage and is a linear function of V1N, the modulating voltage. Useful information transfer was obtained in free air ranges of 12 feet (~ 4m). Greater range can also be obtained by using a higher power output IRED such as the F5D1 in combination with the L14P2 phototransistor. Average power consumption of the transmitter circuit is less than`3 watts.
50 Khz center frequency optical transmitter

Lenses or reflectors at the light emitter and detector increases range and minimizes stray light noise effects.

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