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sbelyo

Balanced to unbalanced board

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Guys, Dr. Gilmore has done a review of the Buffer's design.

Includes several improvements like two servos (one for the input and one for the output) resistance for the input impedance, trimpot for bias ...

diffinput5b - CADCAM.ZIP

diffinput5b.PDF

All in the same size as the previous board. 

These improvements help solve the two problems that I have encountered:

A) Oscillation by impedance in the input
B.) Offset due to Fets

Thanks Dr. Gilmore  B) 

 

Edited by jose
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1 hour ago, kevin gilmore said:

Original downloads work for me?

yes but you =SuperStar

first links no=go

second work, Thanks

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Thanks Dr. Gilmore. 

It really is not that expensive either (an extra Opa and some more resistances). If it is as versatile as we want, what does it matter if something more expensive comes out?

In addition, the unbal/bal works perfectly so it would be normal to have the buffer at the same level.

 

 

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