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Summary of Contents for Oakley RPSU
- Page 1 Oakley Sound Systems Rack Power Supply Unit (RPSU) PCB Issue 1 Builder's Guide V1.1 Tony Allgood Oakley Sound Systems CARLISLE United Kingdom...
- Page 2 This document contains a full parts list for the components needed to populate the board and some basic testing methods. You will also need the RPSU User Manual which gives details on how to use the module as well as example wiring diagrams. This can be found on the RPSU webpage.
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Page 3: Parts List
R3, R4 R1, R2 * If the RPSU is to be used within a project featuring an internal mains transformer then R5 should be a wire link and not a resistor. A resistor lead clipping is normally long enough for this purpose. - Page 4 National's devices have a thicker and more rigid heatsink tab. Do not fit solder these into the board just yet. They are only to be soldered once the board is fitted to the panel. See the section on mounting the RPSU board later in this document.
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Page 5: Power Switch
Miscellaneous 1K multiturn cermet trimmer POS, NEG 0.156” Molex KK 4-way header PSU1, PSU2 800mA antisurge 20mm fuse F1*, F2 20mm fuseholder PC mount F1*, F2 4-way screw terminal 5mm POWER, SWITCH 2 off TO-220 insulator For mounting of U1 and U2 to panel 2 off TO-220 insulating bush For mounting of U1 and U2 to panel Heatsink paste... - Page 6 National LM337T. The RPSU PCB needs to be fitted to your case metalwork. Use the PCB as a template for the four holes needed for the mounting pillars. The board should be spaced high enough off the panel so as to not short out any of the components' leads should the board be flexed downward.
- Page 7 for each of the regulators. Clear off any swarf and, twisting with your hand only, use an 8mm drill bit to lightly deburr the edges of the holes. There should be no bumps around the holes. The regulators are both TO-220 devices. They both need to be fitted to the panel mechanically and thermally but not electrically.
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Page 8: Testing And Calibration
This means connect your black lead of your voltmeter to the pad marked EARTH on the RPSU board. Now measure the voltage at pin one of the header, the top one, it should be positive and be somewhere between +13V and +18V. Check pin 4, the bottom pin, and it should be somewhere between -13V and -18V. -
Page 9: Final Comments
Final Comments I hope you that the Oakley RPSU lives up to your expectations and provides you with a reliable source of power for your project. If you have any questions about the module, an excellent source of support is the Oakley Sound Forum at Muffwiggler.com.
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