Saturday, January 31, 2009

Volume Control 4066

Replace than old mono Variable Resistor with digital one. yes i wish i can create an digital Volume COntrol. i bought IC 4066 it's Quad Switch. use R2R Ladder to make some Bridge. For example the level is 0000 binary (all switch off) the output are 0% when all switch on (1111 binary) then the output 100%. We need some Count Up and Count DOwn IC to produce 0000..1111 binary counter. Use 40xx family IC, can use in wide voltage 3,6,12V. the PCB must not over 3x3cm (two IC) with two button, 4 LED binarycode id.

Can you figure out? What about that scheme? come on quick design it, create it and get the photo. put on your web site . then notice me on comment page :-)
Scheme
here the scheme from trensains.com

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