Thanks for all replies. My first prototype test circuit seems to work as expected although I haven't yet connected the output stage. Connecting a resistor, 10K Ohm, from the inverting input to output, that is, the point between the biasing diodes, resulted in an ouput voltage of 0 Volts. This clearly shows the circuit is working. Also connecting a very high resistance from the non-inverting input to the positive and negative sides of the split power supply resulted in the output voltage shifting accordingly. Voltages across all components followed calculated values quite accurately.
After this test, I will connect the ouput stage when I finish all modifications so that everything is compatible with the earth terminal connected to the 0V terminal of the split power supply. _______________________________________________ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
