lm4702 power amp

darkwind_j · 01:56 AM

is this true that it can go up to 300 watts @ 8ohms load with this kind of design of an Lm4702

glennb · 26th September 2009, 03:25 AM

What a crock. 1) Coupling caps to the speaker. 2) Use of 2N3055 as Vbe multiplier transistor. 3) 30V-0-30V transformer will only give about 65W into 8Ohm speaker.

panson_hk · 26th September 2009, 05:58 AM

This is a circuit just for "fun".

In addition to glennb, there is no bias adjustment.

DigitalJunkie · 26th September 2009, 06:05 AM

Bleecchh.. Look at the LM4702 datasheet,and go from there.

Shaun · 26th September 2009, 09:10 AM

Why not buy a PCB from here?

darkwind_j · 30th September 2009, 08:39 AM

but i seems that its identical to the one at the data sheet of lm4702

26th September 2009, 01:51 AM	#1
darkwind_j diyAudio Member Join Date: Feb 2009 Location: philippine	lm4702 power amp is this true that it can go up to 300 watts @ 8ohms load with this kind of design of an Lm4702 Last edited by darkwind_j; 26th September 2009 at 01:56 AM.

26th September 2009, 03:25 AM	#2
glennb diyAudio Member Join Date: May 2004 Location: Melbourne	What a crock. 1) Coupling caps to the speaker. 2) Use of 2N3055 as Vbe multiplier transistor. 3) 30V-0-30V transformer will only give about 65W into 8Ohm speaker. __________________ Glenn.

26th September 2009, 09:10 AM	#5
Shaun diyAudio Member Join Date: Aug 2001 Location: Cape Town, South Africa	Why not buy a PCB from here? __________________ Shaun Onverwacht \|\|\|\|\|\|\|\|\|\| DON'T PANIC \|\|\|\|\|\|\|\|\|\|

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26th September 2009, 05:58 AM	#3
panson_hk :) diyAudio Member Join Date: Aug 2005 Blog Entries: 10	This is a circuit just for "fun". In addition to glennb, there is no bias adjustment.

26th September 2009, 06:05 AM	#4
DigitalJunkie diyAudio Member Join Date: Apr 2003 Location: Portland,Oregon Blog Entries: 4	Bleecchh.. Look at the LM4702 datasheet,and go from there.

30th September 2009, 08:39 AM	#6
darkwind_j diyAudio Member Join Date: Feb 2009 Location: philippine	but i seems that its identical to the one at the data sheet of lm4702

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