audio-talk

So, is the valveless pcb and passive components worth 32 quid?[/quote]

i think so as includes post BUT is it any good ?

dave

hello all,, this http://www.ebay.co.uk/itm/ALL-TUBE-EZ80-6AU6-OB2-EL84-High-voltage-tube-Variable-Power-Supply-PCB-DIY-/290651034790?pt=LH_DefaultDomain_0&hash=item43ac26d4a6&clk_rvr_id=303600189770&afsrc=1 put up by CRESSY would it power my bijue ? the bijue uses 250 volt.. and i think ...

I lost Nicks PSU schematic when my hard drive died, has anyone got a copy ?[/quote]



is this it dave

[quote="Mike H"]Good lord you still using that version?

well yes ,and i have more than one of em !! they work very well just better wivout the fuse

dave

Mike H wrote:

Is that good or bad?

More reliable is good.

its all good , i think it sounds better just curious if the zeners could alter the sound ?

dave

[ #2. The fuse is a problem. Somewhere there's a thread where Nick mentioned something about a fuse doing something because it's thin wire ~ you know like feeding a speaker with thin wires, boosts the treble and cuts the bass? Same sort of thing here. i have juat modded my E CHOKE, yes better withou...

Ah just looked at the schematic again ~ there is a discharge resistance in effect, R1 R2 & P1. Also, R9 & R10 after C4 so seems belt & braces to me. :?: However I got an idea maybe the gates are blowing due to over-Voltage, the max. safe gate - source Voltage is low like +/- 20V typical...

Oh piddle! Add a discharge resistor this time maybe? hello all well i put new mosfets in (thanks for them andrew) dummy load all good :D re connect amps music . turn it off and it does discharge ok ,very slowly but . BUT THEN i powered down put by-pass cap back with clip leads no change in sound to...

i think thers some info on http://www.rock-grotto.co.uk/

dave

Can I ask what amp is it and what happened? Yes I'm nosey :lol: http://www.cavalliaudio.com/diy/bijou/main.php?page=psschematic its the power supply for a bijou i changed the last capacitor and found a big improvement . so a few days later i removed the by-pass cap . poss i touched it with the sold...

Andrew wrote:I have 6 in two sealed anti static bags.

PM me if you want them.

Andrew

you have pm

i have blown em up can anybody advise an equivilant to

IRF802B =FQP4N50 poss there old, as i cant find them. im shure RS must have an equivilant but do not understand all the teck info

poss i need packs of 5

dave

Well done! How does it sound? As Clive is no longer posting here, I might need to pick your brains on stuff when I get around to builting mine. I hope you don't mind :oops: i think you have more experience than me in diy audio :roll: but the Cavalli Audio web site still has all the info on this amp...

a working bijou

Right, the first three people who are regulars here who reply to this thread with the text 'Yes please' I will PM the details to.

First come, first served, and please reply letting me know if it worked ok.[/quote]

yes please

dave