300-0-300 would give you around 410V DC with SS diodes. That could drive a parallel UL push-pull, four 6L6GC or EL34 per channel, I think.
What’s to say the OP can’t implement a choke input supply?
To OP: download a copy of PSUD and simulate power supplies simply and easily to you hearts content.
Personally, I like a power transformer with higher current capability than needed for a given design.
My 2 cents, ymmv
To OP: download a copy of PSUD and simulate power supplies simply and easily to you hearts content.
Personally, I like a power transformer with higher current capability than needed for a given design.
My 2 cents, ymmv
Took me awhile to find the download of the latest version, eventually got it. ( you have to sign up first for the link to become visible)
Now I have to figure out how to use it properly ! Ha! I'll get there.
I'm a little baffled that folks would discourage any DIYer from using a power tranny that's a bit overrated for the job. Better than underrated! A thermistor on the primaries is an easy way to bring voltages down a bit, especially with a vintage tranny.
How hard is it to just design around the voltages you get? So you can’t use EL84’s. So what? 6L6GC or EL34 will have no heartache with B+ as high as 450V or 500V.
My last big project used salvage transformers that are entirely too large for the application.
Each one is on a mono amp but probably has the current to run 3x channels.
When I run em up to full power, the supply doesn't sag because the transformer, even at full output power is still loafing along waiting for some real work to come along but it never does.
Transformers stay nice and cool and the music stays clean at high power.
Always always always buy the biggest, baddest, most over specced transformer your budget will allow.
It's the part that actually makes a difference!
Giant capacitors are a waste of money, but Giant power transformers are in my opinion money well spent.
You already own this so that should settle it!
Each one is on a mono amp but probably has the current to run 3x channels.
When I run em up to full power, the supply doesn't sag because the transformer, even at full output power is still loafing along waiting for some real work to come along but it never does.
Transformers stay nice and cool and the music stays clean at high power.
Always always always buy the biggest, baddest, most over specced transformer your budget will allow.
It's the part that actually makes a difference!
Giant capacitors are a waste of money, but Giant power transformers are in my opinion money well spent.
You already own this so that should settle it!
The OP was going to use a power transformer suitable for 60 plus watts for a 2 watt amp. Nothing wrong just a waste of a nicer future project transformer.
Yeah the op never stated in any sort of useful terms, what he or she was building.
A Darling?
I don't have a clue what that is.
Next time tell us what you're building in a format which conveys useful information about the current load it will put on a transformer.
For example:
"I'm trying to build a push pull, stereo amplifier using 4x 6bq5 power tubes."
That tells folks information they can use to answer thecquestion and doesn't require them to go searching for information to be able to answer your question.
Assume nobody else knows your pet names for your wife/dog/girlfriend/amplifier...
A Darling?
I don't have a clue what that is.
Next time tell us what you're building in a format which conveys useful information about the current load it will put on a transformer.
For example:
"I'm trying to build a push pull, stereo amplifier using 4x 6bq5 power tubes."
That tells folks information they can use to answer thecquestion and doesn't require them to go searching for information to be able to answer your question.
Assume nobody else knows your pet names for your wife/dog/girlfriend/amplifier...
Not really a waste as I just wanted to make sure it wouldn't blow up the amp from overpower. I am just breadboarding the amp to see if i like the sound. I may breadboard a number of amps before building one for keeps. I'm really good at putting things together from a schematic or plan but a electronics engineer I am not. I am not comfortable with the math, actually i do not even know when to use a particular formula for a specific task. Still working my way through that. Im a hands on learner and have no one close by to help me learn the way i learn best, so I'm doing the best i can with what i have, ME!! Lol
Im sorry for not phrasing my question to your exacting standards. Maybe next time you should just ignore my post if it bothers you so much.
Not a pet name at all. It has been discussed on many forums, google Darling amplifier and youll get at least a half dozen schematics.
Besides which my question was somewhat generic. "Schematic calls for 300-0-300 200ma period. Will a 300-0-300 330ma be an issue." Pretty straight forword question.
Unfortunately it got a bunch of different answers. Also i stated im a noob so some leeway should be expected as i may not even know the proper way to ask a pertinent question. I certainly wouldn't lambast someone for asking a question not up to my standards, just because i want to be big man on the forum.
Didn't mean to ruffle feathers here. I just happened to pickup on the 1626 tube in post 15 and darling mentioned.
Typical setup on a darling with 1626 tubes output power is about 3/4 of a watt.
I will now bow out.
Typical setup on a darling with 1626 tubes output power is about 3/4 of a watt.
I will now bow out.
I honestly don't know if they line up to build it, but reviews were that it's a sweet sounding amp and i just happened to buy a box of tubes that included a dozen 1626 nos tubes. But its not the only amp i was looking at, and a number of them use 300-0-300 150-200ma power transformers, so i have the Stancor beast in my junk box and wondered if i could safely use it. Thats all, i didnt have a single amp that i wanted to build yet, i want to breadboard a couple of designs to see which one sounds good to me then build that one.
You've got a dozen of them then make a push pull parallel power amp and get 50-75 watts of power per channel not .75...
Wrt breadboarding it seems like a good idea.
Wrt breadboarding it seems like a good idea.
They are but I can't take credit for them. George from Tubelabs created them I just copied his design.
Been trying to find a schematic to do just that. Couple years ago i found a six tube variant pp but I can no longer find it. And I'm a noob, I'm afraid designing my own version is still beyond my abilities. Sad..
.