John Sparrow

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UNITED ARAB EMIRATES
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Ekimov Igor

RUSSIAN FEDERATION
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Description

Low-noise symmetrical audio power supply

Low-noise symmetrical audio power supply.

The power supply consists of two circuits enabling symmetrical voltage depending on the selection of several resistors with a value from i3 V to i24 V.

The system is powered with alternating voltage from a network transformer with a divided winding, connected to the AC connector. This voltage is rectified in a bridge composed of high-speed RSID diodes and filtered through CE1, CE4. This voltage is pre-stabilized in the classic LM317 regulated stabilizer for positive voltage and LM337 for negative voltage, and thus it is applied to the low-noise U2 stabilizers of the TPS7A4701 type for the positive voltage and TPS7A3301 for the negative voltage.

Schematic and Layout

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Oct 18,2020

4,955 views

Low-noise symmetrical audio power supply

4955

10.00 (2)

Published: Oct 18,2020

Standard PCB

BOM(Bill of materials)

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File Last Updated: 2023/10/09 (GMT+8)

File update record

2023-10-0904:09:56

Parts List (BOM) is updated.

2023-08-0114:54:18

Parts List (BOM) is updated.

2023-07-2410:07:03

Parts List (BOM) is updated.

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