Aleph-X builder's thread. - Page 112

Nixie · 1st August 2006, 07:50 AM

I've very large mica sheets of the same thickness as used in the usual insulators.

My question was more regarding say capacitance between the now-connected to drains bus bar and the heatsink, or the inductance of the long bus bar, etc.

Babowana · 1st August 2006, 09:03 AM

The larger plate area increases the capacitance.
Might lose high frequencies. . . all. . . ?

tenderland · 1st September 2006, 10:41 PM

I am interested in building the Aleph x , low power version and would like to know where I can get circuit boards.

j

Nixie · 2nd September 2006, 04:01 AM

I've some spares, but see if you can find another source first, as I'm not quite certain I won't need them.

chrismercurio · 6th September 2006, 08:37 PM

I have two 1000VA 35v secondary Plitron transformers at home that I bought about five years ago. I took them out recently and decided that I would like to build a power amplifier with them. I searched the forums and have done quite a bit of reading over the last four weeks on the SKA, Aleph-X, and various ChipAmps. I haven't found anyone using the transformers that I have with the Aleph X but would like some guidance as to how appropriate they are for the job as well as a possible source for boards to ease construction. if they are not going to work, perhaps a suggestion as to what project to build as it seems a waste to not use my big beautiful heavy chunks of copper for something.

Thanks!

Netlist · 6th September 2006, 08:45 PM

I can't comment on other amps but I believe 35V is a bit high for AlephX.

/Hugo

gl · 6th September 2006, 08:54 PM

I too think that the voltage is too high for the Aleph-X. However, the transformers would make a great basis for a pair of Aleph 2's.

Graeme

tenderland · 7th September 2006, 11:08 PM

Hello , Pardon me for this rudementary question. I am in the process of digesting Grey Rollins original 15v Aleph x schematic and was wondering about some of the resistor values... 392 ohm,221 ohm, 68.1k ohm. How do you obtain these uncomon values?

J

Zen Mod · 7th September 2006, 11:16 PM

Quote:

Originally posted by tenderland
Hello , Pardon me for this rudementary question. I am in the process of digesting Grey Rollins original 15v Aleph x schematic and was wondering about some of the resistor values... 392 ohm,221 ohm, 68.1k ohm. How do you obtain these uncomon values?

J

uncommon?
nope- common values in 1% metal film - E48 (is it ?) nomenclature

tenderland · 7th September 2006, 11:47 PM

sory i think I didnt check around enough, I just looked at MCM , seems like Mouser has a plethora of said values.

Thanks

J

1st September 2006, 10:41 PM	#1113
tenderland diyAudio Member Join Date: Jul 2004 Location: us	PCB I am interested in building the Aleph x , low power version and would like to know where I can get circuit boards. j __________________ "If every one is making wheels , why make wheels ? " Steve Jobs

6th September 2006, 08:37 PM	#1115
chrismercurio diyAudio Member Join Date: Aug 2006 Location: Silicon Valley	Getting started...transformers and boards I have two 1000VA 35v secondary Plitron transformers at home that I bought about five years ago. I took them out recently and decided that I would like to build a power amplifier with them. I searched the forums and have done quite a bit of reading over the last four weeks on the SKA, Aleph-X, and various ChipAmps. I haven't found anyone using the transformers that I have with the Aleph X but would like some guidance as to how appropriate they are for the job as well as a possible source for boards to ease construction. if they are not going to work, perhaps a suggestion as to what project to build as it seems a waste to not use my big beautiful heavy chunks of copper for something. Thanks!

7th September 2006, 11:08 PM	#1118
tenderland diyAudio Member Join Date: Jul 2004 Location: us	resistors Hello , Pardon me for this rudementary question. I am in the process of digesting Grey Rollins original 15v Aleph x schematic and was wondering about some of the resistor values... 392 ohm,221 ohm, 68.1k ohm. How do you obtain these uncomon values? J __________________ "If every one is making wheels , why make wheels ? " Steve Jobs

7th September 2006, 11:47 PM	#1120
tenderland diyAudio Member Join Date: Jul 2004 Location: us	oh boy sory i think I didnt check around enough, I just looked at MCM , seems like Mouser has a plethora of said values. Thanks J __________________ "If every one is making wheels , why make wheels ? " Steve Jobs

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

1st August 2006, 07:50 AM	#1111
Nixie Banned Join Date: Jan 2006 Location: Vancouver, BC	I've very large mica sheets of the same thickness as used in the usual insulators. My question was more regarding say capacitance between the now-connected to drains bus bar and the heatsink, or the inductance of the long bus bar, etc.

1st August 2006, 09:03 AM	#1112
Babowana Formerly "jh6you". R.I.P. Join Date: Jul 2006	The larger plate area increases the capacitance. Might lose high frequencies. . . all. . . ?

2nd September 2006, 04:01 AM	#1114
Nixie Banned Join Date: Jan 2006 Location: Vancouver, BC	I've some spares, but see if you can find another source first, as I'm not quite certain I won't need them.

6th September 2006, 08:45 PM	#1116
Netlist diyAudio Moderator Emeritus Join Date: Jan 2003	I can't comment on other amps but I believe 35V is a bit high for AlephX. /Hugo

6th September 2006, 08:54 PM	#1117
gl diyAudio Member Join Date: Dec 2003 Location: Sierra Foothills - California	I too think that the voltage is too high for the Aleph-X. However, the transformers would make a great basis for a pair of Aleph 2's. Graeme

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read