20mhz-40mhz sine osilator please help

[matbymay]

when you click the links just reenter product number to search space

thank you
any information just let me know please

 

[matbymay]

and as you said interesting why is it interesting ?

 

[blueroomelectronics]

Look at the output rise (500ns) and fall (250ns) times of the photo-transistor.
What does that tell you about it's maximum operating speed.

What makes you think your design will function? Are you basing it on a tested design or just wishful thinking?

The IR rangefinders I've used work like this and are not anything like your design.
How to Build a Robot Tutorial - Society of Robots
**broken link removed**

 

[matbymay]

yes this is triangular measurment technics. my project will be phase differences measurment between transmitted and received signal. yes measurement is nonasecond level.

i know it is hard but this is project and i confuse some implementing theory for example oscillator design which should be stable. thats why i m asking you whose experinces better than mine. just i need some hint and tips to do easy. it will be also test and keep try different ideas due to this is the project
thank you

 

[blueroomelectronics]

Google crystal oscillator

 

[matbymay]

i have checked google there ara oscillator sinewave but i dont know which one is reliable. so maybe you have already tried some of them and suggest me good one reliable and stable before implement circuit board.

thank you

 

[blueroomelectronics]

Did you ever get it working?