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VOLTAGE TO FREQUENCY CONVERTER
+ 1uS LED PULSE DRIVER
This circuit receives the signal from the above amplifier and launches powerful
1uS infrared light pulses from a low cost LED that are frequency modulated by the
audio information. The 10KHz center frequency of the pulse stream is low enough so
a standard infrared LED can emit ten times more light than conventional long pulse
techniques. The circuit is described in more detail in the transmitter section of
my Handbook of
Optical Through the Air Communications.
Click on Drawing Below to view PDF version of Schematic
