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I need a filter for my home made oscillatore

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oliversvilan

New Member
I've made a oscillator:eek: from 74hc14 chip and its a square wave runs on 3v. can anybody send me a schematics for a filter of any kind for it or a low pass, high pass, distorsion, or filter that changes it into a sine wave. also any kind of help will do cause im making an experiment and i would like to make an analog imitation synthisaizer out of it.
thanks a lot and hope you guys help me cause im stuck :)
:D
 

EN0

Member
I've made a oscillator:eek: from 74hc14 chip and its a square wave runs on 3v. can anybody send me a schematics for a filter of any kind for it or a low pass, high pass, distorsion, or filter that changes it into a sine wave. also any kind of help will do cause im making an experiment and i would like to make an analog imitation synthisaizer out of it.
thanks a lot and hope you guys help me cause im stuck :)
:D
Oliver,

Go to your local library and pick up the ARRL Handbook. Try to find the most recent edition available. Inside, you'll find all sorts of filter designs.
 

oliversvilan

New Member
Oliver,

Go to your local library and pick up the ARRL Handbook. Try to find the most recent edition available. Inside, you'll find all sorts of filter designs.

thanks for nothing anybody else ... maybe with some cool idea or schematic for other oscillatore ... is there anybody out there!!!! ????
 

EN0

Member
thanks for nothing anybody else ... maybe with some cool idea or schematic for other oscillatore ... is there anybody out there!!!! ????
Oliver,

It is our primary goal at Electro-Tech to help you when necessary; not do the work for you. We will get you on the correct track, but you need to initiate the effort and motivation.

Could you please post a schematic of your oscillator? Then we can suggest a filter that will be best for your circuit. First of all, do you have any filter capacitors in your oscillator? This will prevent a distorted waveform.
 

audioguru

Well-Known Member
Most Helpful Member
I and other people have used a multi-order switched-capacitor lowpass filter IC to make a very low distortion sine-wave from a square-wave input. Some switched-capacitor filter ICs have a built-in high frequency oscillator.
 
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