Ok great thank you very much I will go get some 74HC14 today if possible and replace them, I will also upload a schematic, and a smaller picture
i tried running on a bread board with a 4000 CMOS CD40106 the output looked like a square wave through a diode to LP filter not good, like spikes not what I want I suspect something to do with the 4000 CMOS circuitry?? 4000 CMOS is good because you can do cool stuff with it as it will work up to 15 volts or maybe more great for hybrid analog and digital designs, especially for audio applications, you can use 4000 CMOS to build very good VCO, but low frequencies.. if you would like a circuit for that I can give you this also if interested? I have about 6 different design for VCO using hybrid design like this? off topic I am also building a VHDL/FPGA time interval counter, I will be happy to share the code and the schematics if your interested the FPGA is great fast, and I can do all the pre scaling and down converting within the hardware. concurrently as you know downside FPGA are expensive for what they are. the TI logic design guidelines said specifically that 4000 cmos is good for low frequencies sub 1MHZ for anything above different logic families. I will get back to you all later with schematic and pictures thanks again for all your help. let me know if you want schematics for my other designs also forgive my ignorance and don't judge me but what is a "line-receiver" never heard of this is this jargon, I am australian, or is this just my ignorance remember I am a newbie to time and frequency but I am fascinated On Mon, Nov 28, 2011 at 10:23 PM, ehydra <[email protected]> wrote: > A 50K picture should fit the problem. > > I successfully use 4000 series for amplifying a 5MHz PSK signal. The HEF4x > is a little faster than HCFx. > > Or use a line-receiver if the oscillators is not buffered internal. > > - Henry > > > Michael Malloy schrieb: >> >> its a shame i cannot post the picture i took is there any way to be >> able to send my oscilloscope picture its 800k thats the problem > > -- > ehydra.dyndns.info > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > -- #include <sig.h> /* ================ */ Michael /*How crazy does it get on the moon, when theres a full Earth?*/ _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
