QUASI Amplifier for Beginners

DIY Amp Case

Suggestion for simple and low cost diy cases for amps.
 

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APEX CLASS B 500W

Quasi complementary amplifier based on old Dynacord. For begginers Class B without adjust.[/QUO

hope this may help.this what i do when i have nothing to do at office.enjoy.

input capacitor used tantalum capacitor in series. same value as the original.

check for possible mistakes.i have not try this board.:)

im glad to help miles in his generosity.
 

Attachments

  • 500w amp APEX.pdf
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  • 550w amp TOP VIEW.pdf
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Hello all!
I want this amplifier 550W class-B to be processed into kalass-AB, and instead of diodes D3 (1N4148) and D4 (1N4148) for the bias, to put the transistor for bias, ... such as BD139 or similar?:confused::(
That's why people help you do that changes the pattern of this amplifier?
thanks :rolleyes::(
 

Attachments

  • Apex 550W class-B.pdf
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Last edited:
Quasi complementary amplifier based on old Dynacord. For begginers Class B without adjust.[/QUO

hope this may help.this what i do when i have nothing to do at office.enjoy.

input capacitor used tantalum capacitor in series. same value as the original.

check for possible mistakes.i have not try this board.:)

im glad to help miles in his generosity.

Dear Drowranger
After you have created a PCB for the 550W class-B, please if you are able to make some changes to the PCB for this amplifier 2x1N4148 diodes instead of the bias with transistor BD139 set to the schematics (see circuit)!?
thanks
 

Attachments

  • Figure 1 (klass-AB 500W Amplifier).pdf
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