michael do you have listened the hammond inductor version , before ordering i just want to be sure there is no signal noise problem with them as it was mentioned in previous post 😉
It would be interesting to build something like Zen V7 (see pic), but of course without feedback. One could use a biggish mains transformer for this task, and it may be more easily available/obtainable then a proper air core choke...
SIT-ZEN-TV7? 😀
SIT-ZEN-TV7? 😀
That's pretty much what's on my bench right now, minus the tail CS. I guess I can move on to something else and leave this one to the group. 🙂
Probably one from me Michael. #569 juanitox?
I was doing a single ended choke loaded amp. Basically I just replaced the Aleph CCS with a 195T5, 100mH, .64DCR, 5A Isat, Hammond power supply choke.
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That question was in reply to Juanitox.
As far as a balanced SIT amp goes, there are several possibilties which could be explored including circuits similar to Balanced Zen Lite ZV7, etc. etc. I imagine any of them would be fairly easy (and perhaps educational) to cobble together and I'm sure everyone here would be happy to help if you get stuck.
As far as a balanced SIT amp goes, there are several possibilties which could be explored including circuits similar to Balanced Zen Lite ZV7, etc. etc. I imagine any of them would be fairly easy (and perhaps educational) to cobble together and I'm sure everyone here would be happy to help if you get stuck.
Assuming we're talking about physical ringing. yes, the 193V will "sing" when excited with sinewaves at a Watt or so starting around 3kHz and peaking around 8kHz. This can be heard a few feet away.
This isn't altogether unusual, and in fact, lots of things will "sing" when excited in this fashion: transformers, heat sinks, light bulbs, chassis, etc. I'm not sure it will interfere with your musical enjoyment, but if it does, there are a couple of options available:
1. Use the big air-core inductor, which also sings, though less audibly.
2. Build something else altogether.
3. Listen to music program at normal levels rather than pure sinewave excitations at 1 Watt.
This isn't altogether unusual, and in fact, lots of things will "sing" when excited in this fashion: transformers, heat sinks, light bulbs, chassis, etc. I'm not sure it will interfere with your musical enjoyment, but if it does, there are a couple of options available:
1. Use the big air-core inductor, which also sings, though less audibly.
2. Build something else altogether.
3. Listen to music program at normal levels rather than pure sinewave excitations at 1 Watt.
You may also be able to eliminate the ringing by soaking the choke in hot wax. Make sure to leave it in the hot wax long enough for the whole choke to come up to the wax's temperature so the wax will fully penetrate.
This procedure not recommended for light bulb loads 😀
Roscoe
