Hello all! I'd like to thank anyone in advance for their assistance being offered. I am building a small guitar amp as my first project. I have made some progress and believe I am almost there, but I would like to present what I have so far and get advice on if I have messed up anywhere or not I have also EXCLUDED the J2 Jack from the final design.
PARTS LIST:
R1: 22K 1/4W Resistor
C1: 10µF 25V Electrolytic Capacitor
C2: 100nF 63V Polyester or Ceramic Capacitor
C3: 220µF 25V Electrolytic Capacitor
IC1: TDA7052 Audio power amplifier IC
J1,J2: 6.3mm Stereo Jack sockets (switched)
SPKR: 8 Ohm Loudspeaker
B1: 9V PP3 Battery
Well apparently in multiple tests, my schematic does not work. I have made a total of 33 layouts and I just cannot get it to work. Normally I do not ask this, and I feel kind of ashamed doing so, but would somebody take that circuit diagram and convert it to a usable stripboard? I am not asking this for someone to do my work for me. I simply want it to compare to what I have and find out where my brain is skipping. Thanks in advance!
Well apparently in multiple tests, my schematic does not work. I have made a total of 33 layouts and I just cannot get it to work. Normally I do not ask this, and I feel kind of ashamed doing so, but would somebody take that circuit diagram and convert it to a usable stripboard? I am not asking this for someone to do my work for me. I simply want it to compare to what I have and find out where my brain is skipping. Thanks in advance!
Looks like J1 is wired to switch power. It must be used with a mono plug, It will not work with a stareo plug. Try running the battery negitive right to the strip board row "J".
@ericgibbs: No I have not tested the circuit from Diag 6. I may be making very beginner level mistakes but thats because I'm a beginner . That was simply a diagram that was found online with a few minor instructions. It looked simple enough for me to muddle through as a first project. Apparently not lol. I apologize for any unclarity, but I have not actually soldered an parts yet. All my testing has been done inside LochMaster and DIY layout creator. I cannot seem to get continuity through C1 and R1. Is this a flaw with the program that will not manifest on a StripBoard?? Could you recommend a better one?
@4pyros: Forgive the possible stupidity of the question, but you are referring to a 2 pin plug, correct? In this case, Pins 3, 6, and 2 (through C1) would all go to the same track as one pin of the plug and then negative battery would go to the other pin?.
@audioguru: This TDA7052 was the closest one I could find on mouser.com, I figured I could make it work. Apparently that is not the case.
So, after the much thought you have all provided, I will be switching gears here and redesign using the diagram that is in the IC's Datasheet that I picked.
@4pyros: Forgive the possible stupidity of the question, but you are referring to a 2 pin plug, correct? In this case, Pins 3, 6, and 2 (through C1) would all go to the same track as one pin of the plug and then negative battery would go to the other pin?.
You should use the datasheet for the IC that you have. An old TDA7052 is very different to a new TDA7052A.
But your circuit has the pin 4 volume control pin connected to ground so it should work at max volume.