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Aux power

Please refer to the BOM in Consolidated/BOM folder where Board Name (Col F) is AUX PS. Eagle files is available in Consolidated/Eagle files folder.

![EEZ PSU Power board r5B9](AUX PS r5B9 top view.JPG)

Revision history:

  • 2017-02-23: r5B12
    • Fan generates EMI, isolated fan supply (#9)
    • Power relay MCU controlled on the AUX PS module (#23)
    • Ethernet LEDs connected wrong (#28)
  • 2017-01-11: r5B11
    • Added capacitor between ground and Earth (#17)
  • 2016-10-24: r5B10
    • Side 2 of USB isolator (IC19) has now power connected (#4)
    • Removed +Vcc (pin 1) on USB header X9 (#10)
  • 2016-07-24: r5B9 (Version 2.0 on github)
    • Replaced PCB iron core transformer with AC/DC module 12 V/5 W that support 115 / 230 VAC power input (bridge rectifier, filter capacitor and 12 V LDO for fan is not needed any more)
    • Changed Ethernet RJ-45 connector model and pinouts (X7)
    • Changed power input connector type (X4)
    • Added triac pull-down resistors R110, R111
    • Optimized number of parts size and values, renumbered reference designators
  • 2016-06-14: r5B8
    • Master sync and power connector merged into one 10-pin IDC
    • Added place for optional USB isolator ADuM3160
    • Fixed fan control (added C97 and D21)
    • New numbering in sync with consolidated schematics
  • 2016-05-26: r4B43 (Version 1.0 on github)
    • Correction of swapping pins introduced in r4B40
  • 2016-05-01: r4B42
    • Changed ramp capacitor from 820p to 1n
    • Fan LDO replaced with MC7812
  • 2016-04-06: r4B41
    • Add fan control
    • Change power connector
  • 2016-01-27: r4B40
    • A1 and A2 pins swap on triac Q1 and Q2 to lower required gate current
    • Change KK1 heatsink type
  • 2015-11-14: r4B39 - First public release

This product is made available under the terms of the TAPR Open Hardware License. See the LICENSE.TXT file that accompanies this distribution for the full text of the license.


Repository: www.github.com/eez-open
Web site: www.envox.hr/eez