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Old 15th February 2013, 06:23 AM   #381
tinitus is offline tinitus  Europe
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I have additional power supply lytic caps
one at power in, and one at power out
mine are all 470uf/35V..and also the '820uf'
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Old 15th February 2013, 06:30 AM   #382
naf is offline naf  Indonesia
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Quote:
Originally Posted by tinitus View Post
I have additional power supply lytic caps
one at power in, and one at power out
mine are all 470uf/35V..and also the '820uf'
tinitus, thank for your info.
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Old 15th February 2013, 07:05 AM   #383
tinitus is offline tinitus  Europe
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if you make room for 'optional' bridge diodes, and a few more lytic caps, it would be a complete power supply for preamp etc, with nothing else needed
and remember the LED/bleeder resistor
but only ofcourse only 'optional', in case you want a bigger lytic power bank
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Old 15th February 2013, 12:28 PM   #384
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I would suggest at least a small input lytic.
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Old 19th February 2013, 08:14 AM   #385
naf is offline naf  Indonesia
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Quote:
Originally Posted by keantoken View Post
I would suggest at least a small input lytic.
Tinitus, Kean, thank you for suggestion
here is my layout
Attached Images
File Type: png K-Multiplier-Layout.png (54.3 KB, 392 views)
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Old 19th February 2013, 04:57 PM   #386
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In+ text is missing. Everything looks okay to me.
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Old 21st February 2013, 11:16 PM   #387
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Quote:
Originally Posted by keantoken View Post
In+ text is missing. Everything looks okay to me.
Another small mistake is that "Ground Input" (at left center, next to the leftmost mounting hole) is labeled In+.

Nice job on the star ground! The 470uF input filter caps are placed at the far end of the raw unregulated In+ and In- PCBtracks, so ((the capacitor's ripple current) x Ztrack) noise is seen by the active circuits. On the other hand, it is a ripple filter after all; it's designed to work well in the face of ripple on raw unregulated In+ and In-.

BTW the TO-92 packaged transistors don't have partnumber labels.
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Old 22nd February 2013, 01:45 AM   #388
naf is offline naf  Indonesia
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Thank you everyone,
i'll build mine with this layout.
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File Type: png K-Multiplier-Layout.png (20.0 KB, 319 views)
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Old 25th June 2013, 10:06 AM   #389
Zero D is offline Zero D  United Kingdom
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Question Regulator/s with KM

Anybody tried using this with any of the following ?

1 - Regulator before KM

2 - Regulator after KM

3 - Both the above

If so, what were/are your results ?

If not ......
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Old 25th June 2013, 06:05 PM   #390
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Quote:
Originally Posted by qusp View Post
this might not be popular, but for your purposes here, I would recommend just using a linear technologies IC linear reg with simple surrounding circuit. such as the LT1764A or LT1963A. the ICs really are superb, the guys at linear really know what they are on about and the datasheets and app notes are very comprehensive.
This is the result found when 13 regulators of different manufacturers (or designs which have appeared in DIY circles via The Audio Amateur or Web) (The outlier is the Burson, or the Euphonic Regulator . The Linear Tech off the shelf devices are very,very good.

Later, an observation was presented that the harmonics a regulator can impress on the supply rails played a role in the subjective listening test. The simulations don't exactly replicate reality, but they come close when the devices were checked out using the AP Test Set.

I've ordered the parts to look at the K-Multiplier with the AP Test Set, In the interim here's an FFT simulation of the K-Multiplier as it appears on the web (red), the 820 uF cap on its own (yellow) and the Jung regulator with AD825 error amp. All were loaded the same, and injected with a 20mA perturbation current:

Click the image to open in full size.

Folks are throwing regulators our way for another taste-test.
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