The simplistic Salas low voltage shunt regulator - Page 537 - diyAudio
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Old 27th September 2012, 08:21 AM   #5361
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Thanks, will read your earlier posts.
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Old 27th September 2012, 08:34 AM   #5362
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Salas, what is the upper limit of voltage output for the REFLEKTOR. I have a Krell amp (KSA80B) that uses 75V in the input stage. Could something like the REFLEKTOR work there?
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Old 27th September 2012, 09:11 AM   #5363
AndrewT is offline AndrewT  Scotland
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The added resistor that Roender is recommending goes before the first smoothing capacitor. (do you remember my rCRC recomendations?)
It can go between the rectifier and the smoothing cap or between the transformer secondary and the rectifier. Both of these locations are before the smoothing.

The PSU can be a simple C, or a CRC ,or a CLC, any of these work and all will work with the added R.

That added R is the reason I do not use big thick cables to connect the transformer to the PSU and through the PSU. I used to do that (40years ago) before I stated to think and simply copied what I saw others doing.

Just because you see something 100 times does not mean it is right. Sometimes what you see only once is better.
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Last edited by AndrewT; 27th September 2012 at 09:13 AM.
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Old 27th September 2012, 02:01 PM   #5364
Salas is offline Salas  Greece
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Quote:
Originally Posted by Dr.H View Post
Salas, what is the upper limit of voltage output for the REFLEKTOR. I have a Krell amp (KSA80B) that uses 75V in the input stage. Could something like the REFLEKTOR work there?
If built with proper voltage & dissipation transistors it will.
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Old 27th September 2012, 08:44 PM   #5365
orelli is offline orelli  Italy
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What's differences between 1.2r and reflektor, sonically, of course? It's one better to supply digital or analog circuits?
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Old 27th September 2012, 09:59 PM   #5366
Salas is offline Salas  Greece
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1.2R is more ''forceful and round''. Reflektor has a nice balance of characteristics for something with less parts and easier to succeed. Rather ''open and clear'' its signature. Both are general purpose regs that I designed with analog in mind, though many people migrated them to digital. All types will need some care and checks that they are interfacing without reactions to the multitude of applications. They are not as held down as needed for something pass-partout without looking twice as a 3 legged chip reg. Although even an LM317 can be made much better interfaced to some load than just thrown there.
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Old 28th September 2012, 05:17 AM   #5367
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Hi Salas, is R7 (the 1k pot in the 5V Reflektor) the only adjustment one needs to make to obtain higher voltages (and Vin of course...)?
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Old 28th September 2012, 05:25 AM   #5368
Salas is offline Salas  Greece
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Its one transistor in the mirror that will particularly suffer also if going far beyond the voltages in the presentation examples. If within those margins then its just as simple as you say. Give me the details of voltage and peak current consumption of what you have in mind to do and I will let you know what to use.
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Old 28th September 2012, 05:37 AM   #5369
roender is offline roender  Romania
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Quote:
Originally Posted by Salas View Post
1.2R is more ''forceful and round''. Reflektor has a nice balance of characteristics for something with less parts and easier to succeed. Rather ''open and clear'' its signature. Both are general purpose regs that I designed with analog in mind, though many people migrated them to digital. All types will need some care and checks that they are interfacing without reactions to the multitude of applications. They are not as held down as needed for something pass-partout without looking twice as a 3 legged chip reg. Although even an LM317 can be made much better interfaced to some load than just thrown there.
And how you will describe ver1.1 compared with the above versions?
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Old 28th September 2012, 05:38 AM   #5370
Salas is offline Salas  Greece
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Golden section.
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