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Lincoln Walsh, 1947 sliding bias.
Lincoln Walsh, 1947 sliding bias.
Googling also brought up a pdf of
a 1947 design by Lincoln Walsh, see
* w w w .tubecad . com /2007/12/15/High-Quality%20Audio%20Amplifier%20With%20Automatic%20Bias%20Control.pdf
I have not yet seen the LW design with IST and CFB from OPT
to output stage; it lurks somewhere....
Patrick Turner.
Googling also brought up a pdf of
a 1947 design by Lincoln Walsh, see
* w w w .tubecad . com /2007/12/15/High-Quality%20Audio%20Amplifier%20With%20Automatic%20Bias%20Control.pdf
I have not yet seen the LW design with IST and CFB from OPT
to output stage; it lurks somewhere....
Patrick Turner.
