arevindh
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At what frequency ???
Brian.
1 Watt FM Transmitter[/QUOTE]
Could it give a better frequency stability ?
You could derive the tuning voltage, currently taken from the wiper of the potentiometer, from a PLL instead and lock it to a quartz crystal. That would give excellent stability but would need a few more components. If you use the PLL method, be sure the loop filter response is slow enough that it doesn't 'fight' against your modulation voltage. If built properly, the circuit should be fairly stable as it is though. It is a well thought out design and has voltage stabilization where it is needed. You might be able to leave the 5V regulator out and connect the tuning voltage supply to pin 3 of the 9V regulator instead to save a few parts.
Brian.
For smooth transmission, ensure that your supply is well filtered or use a battery for better performance. Frequency stability depends highly on the power supply, quality of components used, the material of PCB, and the PCB layout too. CheersFriend , I tried this with a FM Transmitter bought from a nearest store mfd by " SILICONICS " .But the was a humming voice with transmitted signal. Can I eliminate this ?
Always stick to commonly used extensions like JPG, BMP. PDF, TIF, ZiF, RAR etc so that your upload can be viewed and utilised by the needy. OR if you are posting any image from a webpage, just posting the links will be fine.(Sorry for the circuit is not well imaged ) It can be opened using Targe3001 V14
Given below is the jpg imageAlways stick to commonly used extensions like JPG, BMP. PDF, TIF, ZiF, RAR etc so that your upload can be viewed and utilised by the needy. OR if you are posting any image from a webpage, just posting the links will be fine.
No i didn't . I have Uploaded jpg image of it pls see itplease upload in pdf format so that every can view it easily boss....
did u try building the mod4 design by audioguru????
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