LCD BARgraphs


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  1. #27
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    On the attached check page 8-29 the up left schematic. Output is on pin 13 and there is no need for coils etc as that part is not needed. In fact no components are needed on the pins 5,6,7,8,9,10,12 and 15.

    On 13 there must be a load resistor to get the output voltage and on input pin 1 the capaciotors from .01 and .02 should be large enough for the audio spectrum as the values shown are for 10,7MHz IF. Put 10 or even 100 uF to get decent low freq. response. The chip works from almost 0 Hz!

    Ioannis
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    Last edited by Ioannis; - 7th February 2010 at 13:27.

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