I am making a audio amplifier using OP amp lm741 for my project.
I tried searching for a circuit diagram but all I got is like this.
http://www.electronicecircuits.com/electronic-circuits/12w-amplifier-using-741-op-amp/
it needs a negative voltage input but since I dont have transformer and I want it to be like a pocket amplifier, so I decided to search for more circuit diagrams and then I found this one.
http://www.gwellwood.com/electronics/741amp.jpg
it doesnt need negative voltage, so I was like " Ok this is the right one." but I want it to be a pocket amplifier just using a 9 volt battery.
heres my question.
Can I/How to change the 12v to 9v?
do I just use 9v battery to run it or I need to do some changes w/ the circuit.
please help me guys.
please~
thanks.
I tried searching for a circuit diagram but all I got is like this.
http://www.electronicecircuits.com/electronic-circuits/12w-amplifier-using-741-op-amp/
it needs a negative voltage input but since I dont have transformer and I want it to be like a pocket amplifier, so I decided to search for more circuit diagrams and then I found this one.
http://www.gwellwood.com/electronics/741amp.jpg
it doesnt need negative voltage, so I was like " Ok this is the right one." but I want it to be a pocket amplifier just using a 9 volt battery.
heres my question.
Can I/How to change the 12v to 9v?
do I just use 9v battery to run it or I need to do some changes w/ the circuit.
please help me guys.
please~
thanks.