Massive iron is what you like, isn't it?
Sakuma-san used even two chokes in his (CLCLC) HV supplies...
Sakuma-san used even two chokes in his (CLCLC) HV supplies...
Allen,
the working method of the choke input filter is presenting a very high impedance, which is the only language transients understand. Lowering the impedance, a capacitor in that position is undesirable.
the working method of the choke input filter is presenting a very high impedance, which is the only language transients understand. Lowering the impedance, a capacitor in that position is undesirable.
daanve,
Of course.
It is a common, almost inextricable misconception that accuracy gives low distortion, actually, the cure is worse than the disease. Transients have the ability to travel through galvanic isolations and don`t allow themselves to be shunted, certainly not by shitty IC voltage regulators.
Of course.
It is a common, almost inextricable misconception that accuracy gives low distortion, actually, the cure is worse than the disease. Transients have the ability to travel through galvanic isolations and don`t allow themselves to be shunted, certainly not by shitty IC voltage regulators.
Beside the rectifying diodes, power supplies should consist of passive parts: capacitors, chokes and resistors.
LC and CLC filters both work well when designed properly; it's a design choice.
With a small value input capacitor it will work like something "in between".
Advantage might be the option to tune the output DC voltage.
In the meantime we're getting OT, turning the thread into a LC/CLC power supply discussion...
With a small value input capacitor it will work like something "in between".
Advantage might be the option to tune the output DC voltage.
In the meantime we're getting OT, turning the thread into a LC/CLC power supply discussion...
Sorry for the off-topic, then I'll only say that is not the reason for the small capacitor. We can talk somewhere else about it.
My SEP amp uses CLCLC PSU, too. Sounds superb. Even with a cheap tube like F2A. Just want my amps to sound real, without any artefacts of tube sound.
Interesting enough, thats possible, even with cheap tubes. It mostly depends on the perfection of circuits, build quality and parts.
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Take care Andy, you're opening a can of worms...
But OK, to give you a nice starter, here is my take of what IMVHO is the most important in a (SE) tube amplifier:
1. power supply (after all, an amplifier modulates the power supply into AF so there you are);
2. circuit design;
3. transformers;
4. choice of tubes.
So yes, choice of tubes comes last!
But OK, to give you a nice starter, here is my take of what IMVHO is the most important in a (SE) tube amplifier:
1. power supply (after all, an amplifier modulates the power supply into AF so there you are);
2. circuit design;
3. transformers;
4. choice of tubes.
So yes, choice of tubes comes last!
Andy,
Given that all of your designs are single ended, haven't you just been mostly listening to the difference in your power supplies recharging and discharging all along?
kind regards
Marek
Given that all of your designs are single ended, haven't you just been mostly listening to the difference in your power supplies recharging and discharging all along?
kind regards
Marek
"listening to the difference in your power supplies recharging and discharging"
What about the constant current loaded preamp? 😛
Motto: one worm climbed out the can. 😛pp
What about the constant current loaded preamp? 😛
Motto: one worm climbed out the can. 😛pp
My power supplies are all small cap > 10H choke > 100uF - > R > 10uF. All the caps are motor run polypropylene. Rod doesn't think much of them!! Rectifier is AZ1/AZ11 mesh pair in parallel.
I don't have a "preamp" or active plate load. I just have a 2 stage amp where the driver is loaded with a plate choke and followed by .2uF FT-2 caps. My AK4490 DAC goes straight into the amp. I've pretty much decided on 300b finals but have a pair of F2A to try and also a pair of 2a3. I've eventually found a small number of drivers I like the sound of, but they're very rare and I have a real job finding them.
I don't have a "preamp" or active plate load. I just have a 2 stage amp where the driver is loaded with a plate choke and followed by .2uF FT-2 caps. My AK4490 DAC goes straight into the amp. I've pretty much decided on 300b finals but have a pair of F2A to try and also a pair of 2a3. I've eventually found a small number of drivers I like the sound of, but they're very rare and I have a real job finding them.
I dont either, the motor runs unlike DC links arent optimized for low ESL most of the times. Wheras those modern blocks made for local decoupling in power inverters (IGBT) Capacitors need to provide good impedance from DC to several 100's of Khz.
AZ4/12 is the higher current version of the AZ1 there are versions of the AZ12 with black mesh, made by the Hun.
Cheers
V4LVE
No - I have a pair though. It's not at the top of the list. I have three 300b amps I need to finish off and sell.
I have AZ12 but not mesh. They're stupid expensive.