Post your Solid State pics here. - Page 118

lgreen · 09:52 PM

Just a quick couple of pics.

Link to original article thread- Original diyaudio thread.

Link to my build thread- My "ExtremA" is Built. Whew.

FYI, this is a a class A amp, 70 WPC fully differential with a bridged output.

Amp Operating.

Top Cover Off.

danfo098 · 18th November 2009, 01:46 AM

My latest project.

100W Class AB amp.
Complementary symmetric differential input using current mirrors.

Link to development thread

nigelwright7557 · 18th November 2009, 01:49 AM

Quote:

Originally Posted by danfo098

My latest project.

100W Class AB amp.
Complementary symmetric differential input using current mirrors.

Link to development thread

Did you thread the heatsink for the bolts or did you put bolts through with nuts on ?

danfo098 · 18th November 2009, 01:56 AM

The heatsink is threaded. The nuts are just spacer substitutes.

Upupa Epops · 18th November 2009, 03:06 AM

Very nice, Danfo...

steevelewis · 18th November 2009, 12:33 PM

Hello Friends.
Steeve here from United States, I feel so glad to see some of the most wonderful and interesting pictures posted here in this group. Really great work by all you guys and I do appreciate your efforts. Can you please post some more pictures specifying the circuit designs too.
Thanks for your post and stay connect.

grube47 · 19th November 2009, 07:18 PM

Quote:

Originally Posted by radio

Hello All!

Thebes me reliable audio amplifiers (scheme and PCB), which will be powered with the Us=±55...60V.Output transistors to be in the TO-3 housing (as MJ15003/MJ15004, etc..)
Thank you,

[/QUOTE]

Here

robertor · 20th November 2009, 05:25 PM

my JLH 1969 based on the chinese PCB.
the 2N3055 are installed by the heatsink out of the case.
transformer ex CCCP military surplus 22v, bridge rectifier 50A + 20000uf/50v capacitor+ 1Ohm 15W resistor + 120000uf/50v capcitors.
drive very very well my FR saba greencone + TW saba greencone open baffle.
sound great.

nikwal · 11:12 PM

almost finished..

Inputs and outputs are now mounted and connected below the power connector.

(it might look small, but it's by no means weak)..

donaldduck · 23rd November 2009, 04:21 AM

Quote:

Originally Posted by lineup

thanks Cal Weldon

PMA always have some interesting stuff!
Even if sometimes, I would do circuitry in another way = my way

Taste is different

Some like to drink beer .. other sip their wine .. or get drunk on Whiskey instead

Some listen to tubes, others take on MOSFETS, while the most common output devices STILL Are those faithful old BIPOLARS
Taste is personal

lineup

I have two dc 300a amps on my equip and I dont want it any other way from crown amps

17th November 2009, 09:39 PM	#1171
lgreen diyAudio Member Join Date: May 2003 Location: San Diego, USA	"ExtremA" Just a quick couple of pics. Link to original article thread- Original diyaudio thread. Link to my build thread- My "ExtremA" is Built. Whew. FYI, this is a a class A amp, 70 WPC fully differential with a bridged output. Amp Operating. Top Cover Off. __________________ My DIY audio projects- PartTimeProjects.com. Last edited by lgreen; 17th November 2009 at 09:52 PM.

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18th November 2009, 01:56 AM	#1174
danfo098 diyAudio Member Join Date: Apr 2005 Location: Linköping	The heatsink is threaded. The nuts are just spacer substitutes.

18th November 2009, 03:06 AM	#1175
Upupa Epops diyAudio Member Join Date: Aug 2003 Location: Prague,Czech Republic	Very nice, Danfo...

18th November 2009, 12:33 PM	#1176
steevelewis diyAudio Member Join Date: Nov 2009	Hello Friends. Steeve here from United States, I feel so glad to see some of the most wonderful and interesting pictures posted here in this group. Really great work by all you guys and I do appreciate your efforts. Can you please post some more pictures specifying the circuit designs too. Thanks for your post and stay connect.

20th November 2009, 05:25 PM	#1178
robertor diyAudio Member Join Date: Nov 2007	my JLH 1969 based on the chinese PCB. the 2N3055 are installed by the heatsink out of the case. transformer ex CCCP military surplus 22v, bridge rectifier 50A + 20000uf/50v capacitor+ 1Ohm 15W resistor + 120000uf/50v capcitors. drive very very well my FR saba greencone + TW saba greencone open baffle. sound great.

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