xerex8 Posted October 18, 2006 Report Share Posted October 18, 2006 HI AUDIOGURO, is there a replacement for CD4047 coz I cant find it here in manilathanks Quote Link to comment Share on other sites More sharing options...
audioguru Posted October 18, 2006 Author Report Share Posted October 18, 2006 A 4047 is made by most semiconductor IC manufacturers. Their prefix isn't all "CA". Motorola (now called ON Semi) call theirs an MC14047B. All newer ones have "B" as a suffix which means the outputs are buffered. Some manufacturers use uA as a prefix and call it a uA4047B. Texas Instruments used to call theirs an SN4047B.I just looked. Toshiba doesn't make it.Rhonn is in The Philippines. He helped me fix the original faulty project. His e-mail address is on our corrected schematic. Quote Link to comment Share on other sites More sharing options...
MP Posted October 20, 2006 Report Share Posted October 20, 2006 xerex,The 4047 is only giving clock signals of 50 or 60 hz which are complimentary to each other. If you cannot find a 4047, the same could be achieved with a 555 and an inverter chip.MP Quote Link to comment Share on other sites More sharing options...
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