audio-talk

jack wrote:Hi - apologies for delay in replying - I'll be back in the uk tonight - I have a few more kits from this batch - please PM me your address and I'll reply with costs etc.

Cheers

hello did you get my pm
dave

hello all do you have any more kits would like 2 with vertical trimers

thanks dave

[quote="ed"]didn't want to tack this on the end of the previous smps thread as it's a different subject..... can anybody who has the metal caged variety tell me if the metal cage is connected to output negative?? I know there is an earth terminal where the mains terminals are located, whic...

David wrote:What is a 'Broskie Cathode Follower?' Thanks

the link that i put up (4 posts up) works ok on my computor should show
the range of broskie stuff

http://glass-ware.stores.yahoo.net/acf9pin.html if its the same as mine

its in the instructions i think (not built mine)

Hmmm, sounds like some dropping resistors between trafo and modules might be required... i have tried that but it stops the module working,, poss it does not like resisted load can only get 5.5 volts out hello all.. i got no were with droping resistors (previos posts) so i have taken the transforme...

poss this

http://www.ebay.co.uk/itm/300913220196? ... 1497.l2649

this is what i have, i think it may be ok, i have run it for 1 hr the CMC
gets up to 70 deg, im going to try a small fan to pull a bit of air round it

but its not small

How are you dropping the voltage down to get 20V ?[/quote] this smps has an adjuster that works fine :shock: its deffo a CMC connects to the + side of the out puts (they are all connected, in-side so no need to parallel the out puts) i dont think much can be done :?: its supost to be 10 amp 120watts...

stolen from the web. Beam power tube The plate dissipation is 70 watts G2 is 9.0 watts, Cathode current is 275 ma Filament current is 1.75 -2 amps Max plate voltage is 850 Screen is 650 volts Distortion in class A 400v plate 225 v screen Overall Harmonic Distortion is similar to 6550 at 14%. Don't k...

Wow ! Another GK71 heated by SMPS . Seems to be all the rage at the moment. I'm wondering which part it was that came adrift, Dave - you didn't label it on the picture . There are a couple of inductors, a transformer and at least one CMC in those those circuits - which I can see in your photo . Any...

Probably ok you wouldn't normally use hot melt glue in an ambient cooled smps. Tie wrap. thank for the reply i only used hot melt to hold them in position so i could solder them back in place,, they got bashed so hard that it snaped the wires to these things 1.3mm dia solid copper.. smps are rated ...

hello all i have 2, 24 volt smps to try on gk-71 the got bashed and broken in the post.. but i got a refund so they are free :D there is a coil that i think is an inductor ? they got snaped off but i have soldered them back in place the snag is they get very hot 20 mins and the hot melt glue that i ...

Hi Ed, the first choke with the windings on both sides is a common mode choke and its used to remove signals that are common to both sides of the choke - these are typically rf moise and hash that was mains borne but with a SMPS might be noise at the switching frequency of the supply. Here is wikip...

pre65 wrote:I had a quick look and it seems Hot Rox are the best price at £29 each (inc vat) + postage.

http://www.hotroxuk.com/tungsol-kt120.html

Unless anyone else knows better ?

i got mine from them,, best price that i found

dave