Hello
I want to build Fuzz Face effect
I was look in this schematic
http://fuzzcentral.ssguitar.com/fuzzface/fuzzfacenpnschematic.gif
and i was ordor from ebay the 0.01uF creamic instead polyester

I want to know how it changes
If possible you can explain to me what the difference between them

Thanks

 

Polyester capacitors are used in timing and frequency dependent circuits when higher stability and accuracy is required.

Ceramic capacitors would also work in your situation and you would not be able to tell the difference.

 

The difference is in some of parameters like leakage and high frequency response, but none of this will matter in your audio frequency circuit, so don´t worry about it.

 

The difference is in some of parameters like leakage and high frequency response, but none of this will matter in your audio frequency circuit, so don´t worry about it.

Polyester capacitors are used in timing and frequency dependent circuits when higher stability and accuracy is required.

Ceramic capacitors would also work in your situation and you would not be able to tell the difference.

How do I know what voltage capacitor to buy
And how it will affect the circuit

 

Your circuit is powered by a 9V battery.
Capacitors rated for 16V would work.
Ceramic capacitors are typically rated at 16V, 25V, 30V, 50V, etc.
Any of these would work with no noticeable difference.

 

You might want to look at this:
http://diyaudioprojects.com/mirror/members.aol.com/sbench102/caps.html

However, that information is of more use when you want to keep an existing signal "clean". Your "fuzz" pedal will be adding so much noise that it really doesn't matter what you use.

 

Once possible difference is that ceramic capacitors are much more microphonic than polyester. So, sound waves might cause the capacitor to produce small voltages.

After you build and test the circuit, and it's working, with the system on and set to high volume but with no signal, try tapping on the ceramic capacitors, with a pencil (for example) and listen for noise from the speaker.