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-Need Cristal Emulator or Generator via Software or Hardware

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HasanZara

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hi ppl. i need for a projeckt adjustable crystal (OSC) for microcontroller or another one. like 4mhz to 20 mhz (3.5,7.0,or 14 etc)
how i do its ? can microcontroller its ?
Best REgards
Hasan Zara Basan
 

...

i dont need like this 4mhz,8mhz,14mhz via jumper etc...
i want direkt adjust crystal
 

Hi

One way it to use a pll mutiplier.
Second way take a high clock from osc and divide it with logic.


Best regards. 8)
 

Take a PIC Prozessor ( 16F870) or an other whis an Analog imput.
Put an Potentiometer on the Analoginput, an write a little Software that read the analogport.
Than make an Softwaredivider

Or take an VCO 74628
That work from 1Hz to 20Mhz


Mike
 

Look Maxim-Dallas EconOscillators/Dividers:
h**p://para.maxim-ic.com/compare.asp?Fam=EconOsc&Tree=Timers&HP=Timers.cfm
 

Thank you to all

:) wonderfull.
But i need more if have like schema etc..
i am continue to learn about its..

Best Regards
 

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