Making a BD139 voltage follower buffer, need a little help

Mar 28, 2011 at 12:06 AM Post #106 of 107


Quote:


I just built this amp based on this schematic with a +/- 15v supply. I was getting 200-300mV offset after building it. I swapped the opamp and it because 2v, so I swapped back and still 2v! DO'h! It's bedtime now but when I get up tomorrow I hope someone has some pointers.
 
 

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