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    Led display Digital Voltmeter question

    Hello Can i use the Eagle Version of this voltmeter is it ok to build
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    0-30 Vdc Stabilized Power Supply

    see there is no heatsink here available with respect to datasheet. i have heatsink of a processor and one of some other device ,  by the way LM301 plastic  or LM101A metal op amp can also be used instead of LM741.
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    0-30 Vdc Stabilized Power Supply

    ok you have a valid point , i will send some pics of my heat sink , so you can judge on that
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    0-30 Vdc Stabilized Power Supply

    Why not use 2N2219 , why use TIP31A instead
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    0-30 Vdc Stabilized Power Supply

    Man why do they hack , what is the benefit
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    0-30 Vdc Stabilized Power Supply

    the 3A Diodes will heat , ok but will they overheat and burdown , i don't think so . ....
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    0-30 Vdc Stabilized Power Supply

    By the way what is a trimmer potentiometer m is it a pot which can be mounted on a PCB . or something else , because i could not find it . instead i have a regular screwdriver resistor PCB mount.
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    0-30 Vdc Stabilized Power Supply

    I am still suspecting if i can find TIP31A
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    0-30 Vdc Stabilized Power Supply

    By the way i have the 1N5408 instead of 5403 / 2 / 4 , it is a 3A Diode , and i got the TL081 , that i was suspecting , that i could not get
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    0-30 Vdc Stabilized Power Supply

    Actually i live in pakistan , and it is so hot out here , and about 40 degress , pure sun on your head . although the sho is nearby but the roads are always jammed and the traffic is like nonsense . and the local busses are full . it is cruel out here . and i don't have enough budget now also ...
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    0-30 Vdc Stabilized Power Supply

    I did not know about the changings , i bought all the parts that were written , and i have found them with the exact rating , so should i buy again ...  :-[
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    Low-pass Filter?

    And we can also cascade it
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    Low-pass Filter?

    So increase the number of channels per output .
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    Low-pass Filter?

    so for a class D Amplfier we would consider increasing the current first , as it is done in this project.and then add a transformer , or vice versa
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    Low-pass Filter?

    One more thing , can not we change the wave shape of square wave 220V AC to sin ewave
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    Low-pass Filter?

    Forget about the complication , how can we paractically implement it in Class D amplifier , and if not , can we run computer on a square wave
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    Low-pass Filter?

    Now Can we use a Sine wave oscillator instead of a square wave osicllator , this would increase performance for runnning systems that need sine waves .. ???
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    0-30 Vdc Stabilized Power Supply

    i have a question how can we implement negative voltages in this power supply , i mean +-30V , do we have to build another unit for negative voltage ,
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    12 V DC to a 220V AC Inverter AMplfier Design

    A switching Class D AMplfier is hard to make , is it no other idea to use any other type of amplfier.
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    12 V DC to a 220V AC Inverter AMplfier Design

    So are there any ideas for a switching amplifer and how is it to be interfaced with my oscillator idea... and the transformer one..
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