PO3_150W_Power_amp

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PO3_Power_Amp

sorry_for_My_mistake.....
the_amplifier_is_made_in_china_but_the_diagram
is_draft_me_when_i_repair_this_amp_i,ll_make_to_draft
the_amplifier_circuit_design_for_i_know_the_design_of_the_amplifier
however_the_drafting_me_is_wrong
thank_for_the_reply_nigel...sorry_for_my_bad_english.




here_is_the_correct_circuit_diagram...


http://img257.imageshack.us/img257/8636/150wpoweramp.png
 
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Why did you have to repair it ??? Can you show a pic of the amp??


Because_the_power_supply_The_bridge_diode_is_smoke_and_burn_when_the_amplifier_is_working_full_power_24hours_at_my_service..
wedding_party...hehehe...so_replace_the_bridge_diode_25amp_400V.
but_i_need_to_upgrade_this_amplifier_for_more_power_the_same.
ok_if_you_like_to_see_the_amplifier_tommorrow_night_i_upload_the_pic.
 
if we get sufficient versions we might yet see the original schematic, but I doubt that we will.


sorry_bcoz_the_first_schematic_is_wrong_that_i"d_make
you_know_i_have_a_little_knowledge_about_the_design
of_the_amplifier_so_many_professional_designer_here_in_the
diyer....so_why_you_will_not_to_explain_if_the_draft_me_is_wrong
any_part.....the_amplfier_is_work_not_assembled_need_to_upgrade_only.
thanks.
 
you promised to post the original schematic.
Where is it?
You claim you have a broken keyboard.
Your first priority should be repair or replace the busted keyboard.

Sorry for the promise About the Keyboard hehehe...
The correct Schematic and Value Are Show post # 12
The Missing value Of D3 D4 D5 so if im not a mistake i guess the value of the Diodes 1N4148 signal diode but im not sure.... may you help.....

Thanks...
 
D3, D4 & D5 can be signal diodes 1n914/1n4148 or rectifier diodes 1n4001/2/3/4/

What are the voltages across
R16
R17
R18
R23
R24
R25
R26

Are R19 & R20 swapped?

Do Q8, Q9 & Q10 get warm or hot?

R1/C2 ? F-3dB ~ 5MHz!

Is the gain really +48.4dB? 58k/220r +1
 
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