The simplistic Salas low voltage shunt regulator - Page 560 - diyAudio
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Old 4th December 2012, 03:35 PM   #5591
pchw is offline pchw  United States
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You looked at the wrong thread. See first post here
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Old 5th December 2012, 07:42 AM   #5592
Jenyok is offline Jenyok  Russian Federation
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This is one more variant of scheme.
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Old 5th December 2012, 01:46 PM   #5593
Salas is online now Salas  Greece
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Priviet. It could be nice if you like chip regulators. Make one and then compare some of those discrete ones described here in your sound system. It should be the right experiment.
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Old 5th December 2012, 02:18 PM   #5594
Jenyok is offline Jenyok  Russian Federation
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Salas
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Similar schemes is used for HI-FI audio in Russia.
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Left LM317 is used as a parametric (sequential) stabilizator with low noise, additional R5 - 0.1 Ohm, manual change C6 - 470 uF, additional C2 - 470uF, C3 - 0.47 uF .
Right LM317 is used as a current source (current generator) about ~170 mA.
OP AMP and n-MOSFET is used as a parallel stabilizator, max ~150-160 mA is stabilized.
MC7805 is a stabilized high quality voltage source with capacotors filter on out of chip.
R1 must be 6.8 Ohm - 10 Ohm, 2 Watts.

Last edited by Jenyok; 5th December 2012 at 02:36 PM.
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Old 5th December 2012, 02:22 PM   #5595
Salas is online now Salas  Greece
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Question remains. Which one is better for sound? Make one like you do in Russia with chips, see its absolutely stable, then make SSLV1.1 for instance. Compare in system. Ears will speak the pravda.
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Old 5th December 2012, 02:34 PM   #5596
Jenyok is offline Jenyok  Russian Federation
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One more similar scheme.
Russian magazine "Radio" №7, 1986 year, page 61 .
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Old 5th December 2012, 03:07 PM   #5597
Salas is online now Salas  Greece
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Interesting. Why so much input ΒΟΛΤ for 15 ΒΟΛΤ? Does it explain?
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Old 5th December 2012, 03:45 PM   #5598
Jenyok is offline Jenyok  Russian Federation
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Salas
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Transistors VT4, VT8 and VT5, VT10 are the current source (current generator).
Transistors VT10, VT11 are parallel (shunt) stabilizator (regulator).
VD4, VD5 are the parametric (sequential) stabilizator for VT10, VT11.
VT6, VT7 are current source (current generator) for parametric (sequential) stabilizator on VD4, VD5.
VD2, VD3 Zener 6.2V, VD4, VD5 Zener 15V .
.
Stabilized voltage +-15V, max current is about ~60-100 mA.

Last edited by Jenyok; 5th December 2012 at 04:06 PM.
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Old 5th December 2012, 03:51 PM   #5599
Salas is online now Salas  Greece
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No error amp loop though? Just following the Zeners?
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Old 5th December 2012, 04:36 PM   #5600
Jenyok is offline Jenyok  Russian Federation
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Yes, just following the Zeners for VT10, VT11.

Last edited by Jenyok; 5th December 2012 at 04:42 PM.
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