Pcb 300 W

fjromero · 11th November 2006, 06:54 AM

Jan Dupont · 11th November 2006, 07:00 AM

300 Watts output with only two pairs of output devices

fjromero · 11th November 2006, 07:00 AM

fjromero · 11th November 2006, 07:03 AM

Gold_xyz · 11th November 2006, 07:08 AM

the first TIP29 NPN and MJ15004 PNP ?

fjromero · 11th November 2006, 07:33 AM

error, sorry

edl · 11th November 2006, 07:47 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, 08:38 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, 04:06 PM

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

Jan Dupont · 11th November 2006, 04:11 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

11th November 2006, 06:54 AM	#1
fjromero diyAudio Member Join Date: Oct 2006	Pcb 300 W

11th November 2006, 07:00 AM	#2
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	300 Watts output with only two pairs of output devices __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com

11th November 2006, 07:00 AM	#3
fjromero diyAudio Member Join Date: Oct 2006	300 w schematic

11th November 2006, 07:03 AM	#4
fjromero diyAudio Member Join Date: Oct 2006	300 w pcb 2

11th November 2006, 07:08 AM	#5
Gold_xyz diyAudio Member Join Date: Dec 2005 Location: Italy	the first TIP29 NPN and MJ15004 PNP ? __________________ My English originates from here


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11th November 2006, 07:33 AM	#6
fjromero diyAudio Member Join Date: Oct 2006	300 w error, sorry

11th November 2006, 07:47 AM	#7
edl diyAudio Member Join Date: Oct 2004	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!

11th November 2006, 08:38 AM	#8
djk diyAudio Member Join Date: Feb 2001 Location: USA	"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.

11th November 2006, 04:06 PM	#9
SlowDead diyAudio Member Join Date: Mar 2006 Location: nemam	MJ15003/4 Uce max 140 V ... this sch +-75V ?!?!?!?!?

11th November 2006, 04:11 PM	#10
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	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 __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com

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