15V to 12V Adaptor (multiple)

Motivation

15V to 12V multiple Adaptor populated PCB

From time to time I want to integrate a 12V Eurorack module in my 15V banana setup. So I needed a 15V to 12V adaptor. Nothing spectacular. Just from the datasheet. This is the bigger brother for up to five modules from the single one.

This adaptor was tested with a load of 1A each rail. It is tested working properly down to an input voltage of 14,5V with an 1A load on each rail. So it should work fine in every 15V system. With a safety margin of 0.5V.



Specs and features


Implementation

Schematic

15V to 12V multiple adaptor schematic

15V to 12V multiple adaptor schematic

Description:

Just the standard configuration from the datasheets.


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Calibration

  • Adjust TR1 for +12V
  • Adjust TR1 for -12V
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Building hints

  • For higher currents mount heat sink
  • Use Tantalum capacitors for C2 and C5

Special parts

  • None

Download

15V to 12V multiple adaptor documentation download
15V to 12V multiple adaptor Gerber files download

15V to 12V multiple adaptor populated PCB

15V to 12V multiple adaptor populated PCB


15V to 12V multiple adaptor front view

15V to 12V multiple adaptor front view


15V to 12V multiple adaptor side view

15V to 12V multiple adaptor side view


2020 October V 0.9.5

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