The Singing Bush

[Zen Mod]

frankly, struggling with all other projects still acting as Serbian Dust Collectors on shelves

too much ideas, started, too few of Mighty Moi, at least on my disposal

 

[ggetzoff]

Choky,

This was the perfect opportunity to design something low power for tube rectification (i.e. the burning bush)

 

[Zen Mod]

 

[ggetzoff]

Worth considering is a CLC supply. I used CLC, as I mentioned in post #487 (The Singing Bush). I ended up with 44mF - Hammond 195ZJ - 44mF per channel. A single thermistor slows the charge to the capacitors.

The cost was probably no more than CRCRC with 165mF per channel as 80V electrolytic capacitors are not inexpensive, and the choke takes up no more room than the capacitors.

My CLC supply is very quiet - no noise from my 103dB speakers.

Papa Pass suggested CRC of 47mF - 0R5 - 47mF:

BAF 2015 Coverage

Ben,

Did you mean 47kmF?

 

[Ben Mah]

1mF = 1000uF (1 milli = 1000 micro)

By the way, I had a typo. The Hammond choke should be 159ZJ.

 

[Jeffreyjuice]

Ben,

Did you mean 47kmF?

I still feel handicapped by growing up in the US where we refuse to use the metric system! It's just not second nature to us. And we were on track to convert in the early eighties. My senior year in high school the 440 yards I ran became the 400 meters and we got 2 liter soda bottles and that was all we could handle apparently! ...I must confess to still preferring the Fahrenheit scale. It just has more range.

 

[Zen Mod]

though, it's hot , be it broad or narrow

 

[Dennis Hui]

Of course, in Canada we all know that -40C = -40F.

 

[Jeffreyjuice]

I got a shiver just thinking about -40 degrees.

 

[Zen Mod]

already imagining Jeffrey saying ......... :

"-40............ best functional part of me would be - my knee"

beauty of living in Ca and being spoiled with that waether

 

[Ben Mah]

-40? Didn't know. Never in Vancouver.

 

[ggetzoff]

1mF = 1000uF (1 milli = 1000 micro)

By the way, I had a typo. The Hammond choke should be 159ZJ.

Ben,

Right, sloppy on my part because I write MfD (meaning uF) all the time....

 

[AnthonyA]

Zenmod, prz just send by courier.. Friend will PayPal u the diff

 

[Zen Mod]

Anthony, I'll be back to you in few days, as soon I sort which way

 

[AnthonyA]

Very unlucky bastid who have 2sk77b

 

[Adams_Leo]

and also this one ,for comparison sake, my fave small toob SE, EAR859 (declared as 12-13W)

ignore graph weed

Please send me your address.I can send one pair to you.

Best regards
Leo

 

[Zen Mod]

Thank you Leo, no need , I have some and can buy more relatively easy

Give them to someone more needy and closer to you

 

[alheiz]

Hi
I want to receive some pair of PCB ... I got parts of IXFN140N20P I received them yesterday ... please inform if possible

 

[TungstenAudio]

This is the thread you’re looking for: The Singing Bush Kits

 

[asphalt]

Singing Bush

I made monoblocks using 4U Deluxe chassis.
Was able to use 2SK77B outputs. Power is there
Not able to say it’s superior to SissySIT