Hello,
I have AC signal from current transformer :0,008 mV, 50 Hz. I want to amplifie it to 0,88 V with 741 op amp.
If I use NON-INVERTING AMPLIFIER I need 2 resistors:
GAIN (AV) = 1+(R2 / R1) = 1+(1000/100)= 1+ 10=11
My question, I have connected pin 4 to ground and pin 7 to +5V, do I have to connect pin 4 to -5V? Is it mandatory for 741 to have + and - power supply?
I have connected it on protoboard and it seems that on output I have continuos voltage even when I do not have connected 80 mV on input,
what am I doing wrong?
thanks
I have AC signal from current transformer :0,008 mV, 50 Hz. I want to amplifie it to 0,88 V with 741 op amp.
If I use NON-INVERTING AMPLIFIER I need 2 resistors:
GAIN (AV) = 1+(R2 / R1) = 1+(1000/100)= 1+ 10=11
My question, I have connected pin 4 to ground and pin 7 to +5V, do I have to connect pin 4 to -5V? Is it mandatory for 741 to have + and - power supply?
I have connected it on protoboard and it seems that on output I have continuos voltage even when I do not have connected 80 mV on input,
what am I doing wrong?
thanks