Project description
This is the famous Tillman Discrete FET preamp and can be used as preamp for piezo pickups or as a 3dB boost in general.
I ditched the J201 mentioned in the original design and replaced it with a 2N5485. Adjust R3 to set the drain to 6-7v. I used a potmeter to find the correct value.
I've placed one in front of my ValceCaster to boost the input signal and add some clarity.
List
Click here to see the bill-of-materials as a list or download it as a comma separated values file (.csv).
Code
BB Forum code
HTML code
Comments
i used the j201 i dont have a voltmeter new at this
Submitted on June 2nd, 2011 by Anonymousi used the j201 i dont have a voltmeter new at this
a j201 and i dont have a voltmeter
Submitted on June 1st, 2011 by Anonymousa j201 and i dont have a voltmeter i built 2 of them same thing
tillman
Submitted on May 30th, 2011 by Anonymousi built this and the volume actually went down. any ideas?
What FET did you use and what
Submitted on May 31st, 2011 by HaroldWhat FET did you use and what are the voltages on the pins?