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    Stereo Audio power amplifier 2 x 40W - 80W

    ok you are right but how much ampere should i have , a transformer of 2x38VDC @ how many amperes ??? A . what i think it would 500VA so if i multiply by power factor which i don't know , but assuming , it to be 0.5 , it is 300W that is 4A , so the transformer should be rated at 2x38VDC @ 4A , or...
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    Stereo Audio power amplifier 2 x 40W - 80W

    But i can produce a DC 55 and -55 from the transformer that i have because it has reserver power of 4A , and 8A is the total , the circuit uses 4A @ 2 x 38 , and  i have 2x28 V but 8A . so the voltage can be tackeled , because it is a multiple V=IR
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    Stereo Audio power amplifier 2 x 40W - 80W

    The power supply suggests a toriodal transformer of 2x38V = 76V total . and a power 500VA , but i have a transformer of 2 x 28V with a current of 8A . now calculating the current required , Watt = power factor x VA = .5(typical) x 500 , so i get 300W and divide by 76V , i get 3.94A , which is...
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    Stereo Audio power amplifier 2 x 40W - 80W

    hmm , now let me give you another amplfier . to play with . i have a good felling that these parts can be found.  How is this amplfier
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    Stereo Audio power amplifier 2 x 40W - 80W

    But there is one problem , the transistors used cannot be found easily , can u suggest a replacement , for them like the MPSA and the MJL series transistors
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    Stereo Audio power amplifier 2 x 40W - 80W

    :P Hmm if we add a darlington current amplifier at the end of the 1st amplfier , it will increase current , wouldn't it . so this can increase overall power and if we increase the voltage up to say 50V or 60V plus and minus both. What do you think    :o
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    Stereo Audio power amplifier 2 x 40W - 80W

    If we increase the input voltage upto +-40V on the first amplifier i posted , will it then effect the power output. if not  is there any way to increase the power to 100W per channel or 60W per channel .  ???
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    Stereo Audio power amplifier 2 x 40W - 80W

    So what is the final verdict , which one should i make for my project , the commercial amplfier that i showed you first which has easy to find components , or the other which has high power , but have just found it on the internet . One more thing , will the power increase , if i replace the...
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    Stereo Audio power amplifier 2 x 40W - 80W

    How is this POwer amplfier of CLass AB i found on the web
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    Stereo Audio power amplifier 2 x 40W - 80W

    Can you tell me which class of amplfier is it . Class B or AB or not likely A
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    Stereo Audio power amplifier 2 x 40W - 80W

    Well this amplfier is goood for starters
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    Frequency Generator - 2 Fixed O/P

    The three test points are the output with first being the square wave , and then the triangle and finally the sine wave.
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    Frequency Generator - 2 Fixed O/P

    This is the complete schematic for a function generator using 741 opamp . VALUE        SHAPE        #    REFDES      1.00kOhm_1%  RES12        1    R4          4.02kOhm_1%  R0204R7_5    1    R5          4.99kOhm_1%  R0204R7_5    1    R1          20K_LIN      TRIPOT10X5V  2    R2,R6   ...
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    heat sink for transfomer

    Hey why not build your own toriodal transfer , i think it should be easy. anyone knows how to make a toriodal transformer
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    Sine wave Inverter Project

    So kindly loook in the Thread regarding Stereo Power amp 2x 40W = 80W , please and help on the schematic
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    Sine wave Inverter Project

    Audio Guru Please i need your help in the Stereo power amp 2x40W = 80W the topic i have started . i have done the PCB and its layout , a schematic from the PCB layout can be really appreciated , please , thanks  ::)
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    Stereo Audio power amplifier 2 x 40W - 80W

    So here is the PCB layout and PCB silkscreen for PCB toner transfer the image is mirrored . AUdio guru please i require your help with the schematic . and one more thing , there are two channels , can you draw it for one channel seperately.
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    Sine wave Inverter Project

    Cascaded can be done in a transistorized circuit
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    Sine wave Inverter Project

    So making a transistorized Class D amplifier can be a good choice , the one i showed you
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    Frequency Generator - 2 Fixed O/P

    Actually the op amp version is a little messed up around its PCB , so i will correct and send it , while the XR2206 is a better choice , so here it is .
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