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saleheen said:The op-amp of the first or the second circuit ?
saleheen said:I tried using a coupling cap but I am still not able to get any signal. Is the amplifier (LM7121) not compatible with the AM signal (MC1496).
saleheen said:I removed the buffer and connected the AM directly with the delay crcuit. But I added a 100nF cap in between the AM output and the delay input. I am able to get the correct signal after this procedure.
I will get back to this conversation if problem occurs again in the next few days. Guys, thanks for the support especially LvW.. It has been very helpful.. =)
Audioguru said:The non-inverting input of the delay unit has a resistor to ground to give it a DC bias voltage of 0V. The Buffer also needs a resistor to ground to give it a DC bias voltage of 0V like this: