I need help with switch circuit for Infrared diode! I save sequence of remote control signal using circuit based on SFH5110 IR receiver connected on "line in" conector of my sound card I save it like .wav file mono, 40kHz, 16bit, and now I would like to control IR diode with output signal from sound card when I play that .wav file. In attachment is output signal from sound card (that I plan to use like control signal for IR diode), recorded with scope software. Amplitude is approximately 1V. If is possible I would like to use BD139 or C546B transistor because i have few of them! For power supply I plan to use +5V from USB port!
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