#106 Re: Poundland 45
Posted: Thu Oct 28, 2021 8:12 pm
Decided I need to get a bit of practice in with solid state stuff, so on a bit of perf board, I built my own DC heater supply for the ECC88, rather than relying on bought in modules and learning nothing. I'd put the cascode CCS together from a Morgan Jones diagram and found success, so I simply found another application note for the LM317, and built something along those lines. OK it's not exactly a state of the art supply but, I reckon it's perfectly adequate for an IDH driver valve. A phono stage might be a different story but I'll use something better when I get around to building that.
I can't say I can hear any difference whatsoever between the fancy DIYHS DC module and this thing I made up, so I'm quite pleased at the outcome:
Below, the DC heater supply can be seen at the bottom right hand side of the chassis, which now looks remarkably tidy considering the small amount of available space inside, though I say so myself. I'm chuffed to bits with how this project has turned out. Many thanks to the donators of the quality parts that made this come to fruition. You know who you are.
I can't say I can hear any difference whatsoever between the fancy DIYHS DC module and this thing I made up, so I'm quite pleased at the outcome:
Below, the DC heater supply can be seen at the bottom right hand side of the chassis, which now looks remarkably tidy considering the small amount of available space inside, though I say so myself. I'm chuffed to bits with how this project has turned out. Many thanks to the donators of the quality parts that made this come to fruition. You know who you are.