Tubes amp

[squalle 0]

hmm

$2 is worth a try

 

where did u get it from?

and dimensions please.

[huangyong 0]

may be can get for us too.. 2 bucks i dun mind to try

[Kippei 0]

I got a 3VA trafo 15-0-15 0.3A possible to use it?? And a 0.2A glass fuse

Edited January 5, 2006 by Kippei

[squalle 0]

ur trafo is too small, if compared to the prescribed one

but hmm try la

the most the trafo burn

 

fuse is ok

i'm using 250mA fuse, glass too

[Kippei 0]

darn... tml gotta go change again zzzzzzzzz

[Kippei 0]

3VA / 230V = 130ma....

[squalle 0]

wat you would care for is the output

 

they prescribed it as 15-0-15 200mA

which means, 0.2 * 30 = 6VA aka 6 watt

but this is overrated. maybe the usage is closer to 4-5W. but 6W was chosen for safer and more headroom I'd guess

 

input wattage will be higher than that, as there's no 100% efficient trafo

ADD: the input current will be lower than 200mA though, as it is coming from higher voltage

Edited January 5, 2006 by squalle

[Kippei 0]

I found this very nice fuse holder.

 

[Kippei 0]

squalle your board is those single pads or strips type.... which one is better ah

[squalle 0]

I like single pads better as it will be more flexible in making the layout as you like it

 

the 2 strips I have are only at the two sides, then I utilized one of them as my ground

so you can start already ?

 

or wanna come here and do? I need to make another one for a friend

[kross 0]

wa seh...buddy system here huh....still can solder together...

anyway, the wooden boxes costs $2 each and can be bought from Daiyso, 3rd floor of IMM. I have sort of finished the amp, except enclosing it. found out that the metal socket of the headphone plug is too short as the wood is too thick.

 

also, the cheapo vol pot that i am using is sort of receiving FM signals when turned to max, and emit buzz when turn to near min...dunno if that is the problem with cheapo vol pot. those expensive vol pot has these kind of problems?

[kross 0]

wa seh...buddy system here huh....still can solder together...

anyway, the wooden boxes costs $2 each and can be bought from Daiyso, 3rd floor of IMM. I have sort of finished the amp, except enclosing it. found out that the metal socket of the headphone plug is too short as the wood is too thick.

 

also, the cheapo vol pot that i am using is sort of receiving FM signals when turned to max, and emit buzz when turn to near min...dunno if that is the problem with cheapo vol pot. those expensive vol pot has these kind of problems?

[squalle 0]

haha

 

eh kross, can you please measure the dimensions? before I go to IMM myself

or do they sell many different sizes?

 

one comment, why dun you try to put the socket a lilttle deep, instead of putting it from top sitting that way

 

hmm looks very thick

gotta think of a way to make some places thinner to around 3mm

 

who got a milling machine in this forum?

[Kippei 0]

I got a wood plane...

 

oo man the wood is thick... lucky i got a neutrik locking socket..

 

wah kross u diy your own pcb ah

[squalle 0]

kippei: I was thinking to DIY the PCB

wanna try?

I certainly can get to access laser printer