Lm4702 Bpa

halo0925 · 9th November 2006, 02:33 AM

I have a 2.4 KVA transformer going to waste so I thought I would give the LM4702 a shot.
I would appreciate any feed back on the circuit, Thanks.

Bob0513 · 9th November 2006, 04:04 AM

You have wires shorting out R26,R27,R29,R30,R40,R41,R43, and R45

halo0925 · 9th November 2006, 04:10 AM

Done for ease of placement , representative of pass threw of the base resistors, I will correct for clarification.

Bob0513 · 9th November 2006, 05:16 AM

Just making sure you were aware in case you planned on using the board layout in the same program. Your netlist would have been a little screwy.

Robert

halo0925 · 9th November 2006, 05:21 AM

Nope, just like useing it for quick work, its easy to work with, the board layout program stinks.
I use Ultiboard9 for PCB's.

halo0925 · 9th November 2006, 03:23 PM

Nobody, nothing?? I thought someone my be a little interested.
A bridged LM4702 driven by a precision cross coupled line driver, all NPN drivers and outputs all Quasi, and the same gain and frequency charecteristics of a chip amp, and of course around 1KW power output??????? and the parts count is pretty easy to.

Nordic · 9th November 2006, 04:48 PM

Al dem transitors are scaring us off, lol.

Build one yet? any pictures or is it just a schematic at this stage?

halo0925 · 9th November 2006, 05:56 PM

Just in the conception stage now, looking for some feedback and constructive critisism. I tried to stay true to the overture series in output topology gain and frequency, while pushing very high current and voltage levels.
I had been curious about this chip for a while and have a massive 2.4KVA torordial laying around and a bunch of MJ 18020 transistors, so what the heck, thought some people might be interested in a high quality very high power design.

Nordic · 9th November 2006, 06:03 PM

Have you noticed the extra decoulping cap on LM4780 positive rail accoring to that reference circuit...?

halo0925 · 9th November 2006, 06:13 PM

Could you explain in more detail, you mean 4702 not the 4780?

9th November 2006, 02:33 AM	#1
halo0925 diyAudio Member Join Date: Aug 2006	Lm4702 Bpa I have a 2.4 KVA transformer going to waste so I thought I would give the LM4702 a shot. I would appreciate any feed back on the circuit, Thanks.

9th November 2006, 04:10 AM	#3
halo0925 diyAudio Member Join Date: Aug 2006	shorts Done for ease of placement , representative of pass threw of the base resistors, I will correct for clarification.

9th November 2006, 05:21 AM	#5
halo0925 diyAudio Member Join Date: Aug 2006	net list Nope, just like useing it for quick work, its easy to work with, the board layout program stinks. I use Ultiboard9 for PCB's.

9th November 2006, 03:23 PM	#6
halo0925 diyAudio Member Join Date: Aug 2006	? Nobody, nothing?? I thought someone my be a little interested. A bridged LM4702 driven by a precision cross coupled line driver, all NPN drivers and outputs all Quasi, and the same gain and frequency charecteristics of a chip amp, and of course around 1KW power output??????? and the parts count is pretty easy to.

9th November 2006, 05:56 PM	#8
halo0925 diyAudio Member Join Date: Aug 2006	LM4702 Just in the conception stage now, looking for some feedback and constructive critisism. I tried to stay true to the overture series in output topology gain and frequency, while pushing very high current and voltage levels. I had been curious about this chip for a while and have a massive 2.4KVA torordial laying around and a bunch of MJ 18020 transistors, so what the heck, thought some people might be interested in a high quality very high power design.


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9th November 2006, 04:04 AM	#2
Bob0513 diyAudio Member Join Date: Feb 2006 Location: home	You have wires shorting out R26,R27,R29,R30,R40,R41,R43, and R45

9th November 2006, 05:16 AM	#4
Bob0513 diyAudio Member Join Date: Feb 2006 Location: home	Just making sure you were aware in case you planned on using the board layout in the same program. Your netlist would have been a little screwy. Robert

9th November 2006, 04:48 PM	#7
Nordic diyAudio Member Join Date: Sep 2005	Al dem transitors are scaring us off, lol. Build one yet? any pictures or is it just a schematic at this stage?

9th November 2006, 06:03 PM	#9
Nordic diyAudio Member Join Date: Sep 2005	Have you noticed the extra decoulping cap on LM4780 positive rail accoring to that reference circuit...?

9th November 2006, 06:13 PM	#10
halo0925 diyAudio Member Join Date: Aug 2006	? Could you explain in more detail, you mean 4702 not the 4780?

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