Well, I am new here, and new to this hobby and I do not know if this the right sub-forum to post my question to.
I have constructed this circuit on a prototyping board:
https://www.circuitlab.com/circuit/875t83/receiver_1_4/
Each amplifier works fine as long as nothing else is connected to the chip. Once I connect a single resistance to the chip, the output of the amplifier goes high. The output on one of the amplifiers rises to 0.5 V while the second falls to -0.5 V. Both work properly but with the mentioned offsets. Now my question(s):
1-Why does this happen? 2-Can I avoid these effects or.. 3-That is normal and I have to eliminate these offsets, or... 4-Probably use two single OP-AMP chips instead
Thanks in advance
PS. I tried using TL084 instead of the LM324: same behavior.
I have constructed this circuit on a prototyping board:
https://www.circuitlab.com/circuit/875t83/receiver_1_4/
Each amplifier works fine as long as nothing else is connected to the chip. Once I connect a single resistance to the chip, the output of the amplifier goes high. The output on one of the amplifiers rises to 0.5 V while the second falls to -0.5 V. Both work properly but with the mentioned offsets. Now my question(s):
1-Why does this happen? 2-Can I avoid these effects or.. 3-That is normal and I have to eliminate these offsets, or... 4-Probably use two single OP-AMP chips instead
Thanks in advance
PS. I tried using TL084 instead of the LM324: same behavior.