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-   -   Pcb 300 W (http://www.diyaudio.com/forums/solid-state/90098-pcb-300-w.html)

fjromero 11th November 2006 07:54 AM

Pcb 300 W
 
http://img172.imageshack.us/img172/7...ntesyu5.th.jpg

Jan Dupont 11th November 2006 08:00 AM

300 Watts output with only two pairs of output devices :hot:

fjromero 11th November 2006 08:00 AM

300 w schematic
 
http://img144.imageshack.us/img144/2788/300wjv6.th.jpg

fjromero 11th November 2006 08:03 AM

300 w pcb 2
 
http://img137.imageshack.us/img137/1...obrezd0.th.jpg

Gold_xyz 11th November 2006 08:08 AM

the first TIP29 NPN and MJ15004 PNP ? :scratch:


fjromero 11th November 2006 08:33 AM

300 w
 
error, sorry

http://img207.imageshack.us/img207/2...300wpz6.th.jpg

edl 11th November 2006 08:47 AM

That's the TA-3600 KIT.
It's like Phase Linear 700/II.

On the margin: TIP29C/30C and BD245C/250C - these are only 100V Vceo devices!

And hey, in the input 470p and 10k gives only 34kHz.

In the feedback: 270 and 33u, that's 18Hz... Not much...

This amp's bandwith is a tragedy, i think!

And 2 pair of MJ15003 isn't much for 350W/4ohm, at 45 or 60 phase angle. See SOA!

djk 11th November 2006 09:38 AM

"And 2 pair of MJ15003 isn't much for 350W/4ohm, at 45 or 60 phase angle. See SOA!"

Vceo(sus) is only 140V, inadequate for the 75V rails (not to mention the SOA folding back above 40V).

Three pair of MJ15024, suitable drivers and predrivers, copy the PL schematic, and it will work.

SlowDead 11th November 2006 05:06 PM

MJ15003/4 Uce max 140 V ...
this sch +-75V ?!?!?!?!?:bigeyes: :bigeyes: :bigeyes:

Jan Dupont 11th November 2006 05:11 PM

Please note that with regard to SOA, second breakdown and phase angle you need at least 6 pairs of output devices (Vce 250V) to avoid danger :att'n:


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