considering this as a first valve AMP project

[Ears]

interesting PSU design alright, almost like a CRT TV supply (LOPT)

I'd consider making it with a tranny but then it would be bigger and mains operated.

Yeah, 240V to 24V (or better still 30V) followed by a doubler should do it.

But seriously, if ya powered it off AC 12v instead, you could just buy a tiny 12v mains transformer (probably even PCB mount) and wire it in reverse. would give you 200v @ a few mA

Good idea but you still have to get that 12VAC from somewhere, which means.....

[ash]

Firefox - hated it.

[hamo]

Firefox - hated it.

I'll put you in the same box with "people who don't rate Megan Fox" then.

[the_haunted]

interesting PSU design alright, almost like a CRT TV supply (LOPT)

I'd consider making it with a tranny

Yeah, 240V to 24V (or better still 30V) followed by a doubler should do it.

That 1st bit was just me trying to be funny about the word tranny... anyway...

Good idea but you still have to get that 12VAC from somewhere, which means.....

Yeah, for sure, but the Original uses 12v DC adapter, which means mains anyway. it's not gunna last very long on a battery, unless you use a car battery

[Ears]

That 1st bit was just me trying to be funny about the word tranny... anyway...

Geez, I'm slow! should be more careful how I put it.

[tubeswell]

the thread link (first one) says it goes to 70/80VDC.. at least it's not the 00's that the big boys get to.. closer to my comfort zone, but another reason that I'm a bit weary..

Hiya rocklander

(Excuse me for being a 1st time poster on this forum)

Is the reason you are interested in this because it is a 'low-powered' amp? No dissing intended to the designer, but the tubes it uses are really tiny and it looks like it'd be really fiddly for a 1st-time build.

Instead you could just build a conventional Class A SE amp (like a tweed champ or princeton clone) for around $300-$400, which is a lot easier to get parts for and will still be low-powered and heaps of fun to play. There's a lot more knowledge around about troubleshooting the traditional style amps as well. Don't be put off by the high voltages - they just come with the territory.

[hamo]

the thread link (first one) says it goes to 70/80VDC.. at least it's not the 00's that the big boys get to.. closer to my comfort zone, but another reason that I'm a bit weary..

Hiya rocklander

(Excuse me for being a 1st time poster on this forum)

Is the reason you are interested in this because it is a 'low-powered' amp? No dissing intended to the designer, but the tubes it uses are really tiny and it looks like it'd be really fiddly for a 1st-time build.

Instead you could just build a conventional Class A SE amp (like a tweed champ or princeton clone) for around $300-$400, which is a lot easier to get parts for and will still be low-powered and heaps of fun to play. There's a lot more knowledge around about troubleshooting the traditional style amps as well. Don't be put off by the high voltages - they just come with the territory.

There's no excuse for being a first time poster!

Just kidding, welcome, great first post.

[tubeswell]

Thanks hamo
I'm a regular over at the MEF, but a certain k1w1 there suggested this might be a good place to visit now an again

[hamo]

Thanks hamo
I'm a regular over at the MEF, but a certain k1w1 there suggested this might be a good place to visit now an again

We're a motley crew of piss-takers here, but now and again series talk breaks out. Hope you stick around and have some fun.

[rocklander]

the thread link (first one) says it goes to 70/80VDC.. at least it's not the 00's that the big boys get to.. closer to my comfort zone, but another reason that I'm a bit weary..

Hiya rocklander

(Excuse me for being a 1st time poster on this forum)

Is the reason you are interested in this because it is a 'low-powered' amp? No dissing intended to the designer, but the tubes it uses are really tiny and it looks like it'd be really fiddly for a 1st-time build.

Instead you could just build a conventional Class A SE amp (like a tweed champ or princeton clone) for around $300-$400, which is a lot easier to get parts for and will still be low-powered and heaps of fun to play. There's a lot more knowledge around about troubleshooting the traditional style amps as well. Don't be put off by the high voltages - they just come with the territory.

as hamo said.. welcome to the forum

and, nope.. not low power, but low voltage.. the type of volts floating round the board of a 'low power' amp scares the bajezus out of me, and I'd not even consider doing one without a bunch more knowledge and experience.. this could serve as an interim, but to be honest, it'll prolly not fly with me anyway cos I have other stuff I need to get done.. like fixing my suddenly noisy magnus modulus..