sts9fan said:Can somebody explain C5 in the PS for me? I have the boards and all the parts but this cap does not seem to be on the schematic from veteran.
Thanks
Hi,
I found the cap in one part list from GEWA. It is not in Veteran's schematic, but on PS board there is a symbol of a cap on output side.
I used this because usually, in PS, there is always a small 0.1uF cap to filter hi-freq.
Neil,
sumptuous objects in your site. I'm sure you'll be really impressed with Zen+Jordans. Where can I find those nice VUmeters?
An externally hosted image should be here but it was not working when we last tested it.
TRANSFO "R" 500VA 2X36V
This is what I would have bought. Discovered too late...
Re: Transformer
Everybody used a 50VDC PS with 150VA to 300VA for each channel.
doggy said:I have a plitron trans. from a 4780 gainclone, what range of power supply voltage can be used for this amp? and what is a workable va rating?
Everybody used a 50VDC PS with 150VA to 300VA for each channel.
Re: Everybody used a 50VDC PS with 150VA to 300VA for each channel
You get ~20% less than max ZV9 power that is 14W.
meanman1964 said:I have 2 toroids of 2x30V/300VA,are those suitable to use?
You get ~20% less than max ZV9 power that is 14W.
thomaseliot said:
That looks like a very nice transformer, any idea who makes them - I need a 240V version
vatofale said:That looks like a very nice transformer, any idea who makes them - I need a 240V version
Just click on the blue link in your post.
Here are manufacturers
http://www.kitamura-kiden.co.jp/english/products_e.html
http://www.custommag.com/products/r-core.shtml
http://www.rn-core.com/english/products/sort285.asp
farl said:Can i use 15000uf for C1 (output caps) instead of 10000uf. I have this one from my Marantz receiver power supply and I want to use it. It is Elna for audio 15000uf 63V.
I remember somebody have used 15.000uF.
meanman1964 said:
I've a question about Q5(ZTX450)what replacement can I use without changing values of other components but when it's needed what need to be changed?
Any small signal npn tr satisfying the followings is useful:
- The same leg marks (ref. to the attached figure)
- Max. Vceo rating greater than 30V
- Max. power dissipation rating greater than 600mW
- Min. dc current gain of 25 or greater (min hFE of ZTX450=100)
- Similar physical size as ZTX450
- The black-color body
I have used KSP42 with success.
Cheers,
Attachments
Babowana said:
Any small signal npn tr satisfying the followings is useful:
- The same leg marks (ref. to the attached figure)
- Max. Vceo rating greater than 30V
- Max. power dissipation rating greater than 600mW
- Min. dc current gain of 25 or greater (min hFE of ZTX450=100)
- Similar physical size as ZTX450
- The black-color body
I have used KSP42 with success.
Cheers,
Thanks for this information Babo. I always feel ripped of for whatever reason when I use ZTX450 and ZTX550, so if I can use 2N5088 (npn and fits all the criteria you mentioned) I'll try it.
ZTX450 is about 8-10x more money than the 2N5088 at digikey
Thanks and good to see you up and about
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