Simple Oscillator Circuit ???

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#1 21672136 07 Aug 2014 16:12

Raaed Makled Raaed Makled

Anonymous

Post #1
21672136 07 Aug 2014 16:12

hi all . i need some help about this circuit ...

the required Frequency is 10MHZ , but i don't know which values i can use in this Oscillator Circuit .

what's the type of this oscillator ?
how can i get 10MHZ ?
the formula , i can use to obtain the values ??
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#2 21672137 07 Aug 2014 18:21

John Schmitz John Schmitz

Anonymous

Post #2
21672137 07 Aug 2014 18:21

This is not an oscillator, an oscillator requires some gain and power. This is purely a passive circuit, it may resonate but it will not oscillate.
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#3 21672138 07 Aug 2014 18:45

Franklin Rey Pacquiao Franklin Rey Pacquiao

Anonymous

Post #3
21672138 07 Aug 2014 18:45

An oscillator is essentially an amplifier that produces its own input. In general, in order for a circuit to operate as an oscillator, three basic factors must be provided in the circuit. They are Amplification, Positive feedback, and Frequency determining network.

I will agree with John Schmitz. I think this is not an oscillator since it has no amplifier.
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#4 21672139 08 Aug 2014 21:58

Raaed Makled Raaed Makled

Anonymous

Post #4
21672139 08 Aug 2014 21:58

thanks both of you , can you help me for a right circuit i can build with 10MHZ or higher , please
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#5 21672140 09 Aug 2014 03:48

John Schmitz John Schmitz

Anonymous

Post #5
21672140 09 Aug 2014 03:48

I have used the Wien Bridge Oscillator as a cheap and reliable oscillator circuit. You will need an opamp with enough bandwidth. At much aboive 10MHz I would use a transistor oscillator. Attached is a link on how to build one.

"Wein Bridge Oscillator()":http://www.electronics-tutorials.ws/oscillator/wien_bridge.html
#6 21672141 10 Aug 2014 07:24

Raaed Makled Raaed Makled

Anonymous

Post #6
21672141 10 Aug 2014 07:24

thanks brother
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