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Introduction

This is the User Manual for issue 1 of the RPSU circuit board from Oakley Sound. The 
Oakley RPSU is a power supply unit designed to be used in conjunction with the Oakley rack 
projects  like the HVM and SE330. However, it may also be used with a Dizzy module as part 
of a larger DIY project.

As well as giving details as to what the PSU board does, this document contains instructions 
on how to wire up your board to your source of power, any external switches and the optional 
power indicator. I will also give you some information about suitable sources for your low 
voltage AC power supply.

The Oakley PSU allows for various options in the installation. You can use the unit either in 
full wave rectification mode for connection to tapped linelumps or twin transformer 
secondaries, or in half wave rectification for single phase AC output wallwarts and linelumps. 
If all this sounds very confusing at the moment, do not worry, in this manual I will try to make 
it clearer so that you make the right decision about what power source you will need.

If you are building the RPSU as a complete DIY project please also download the latest 
Builder's Guide. This can be found on the main RPSU webpage along with our very useful 
generic parts and construction guides.

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Summary of Contents for Rack Power Supply Unit (RPSU)

Page 1: ...Oakley Sound Systems Rack Power Supply Unit RPSU PCB Issue 1 User Manual V1 0 1 Tony Allgood Oakley Sound Systems CARLISLE United Kingdom 1...

Page 2: ...rmation about suitable sources for your low voltage AC power supply The Oakley PSU allows for various options in the installation You can use the unit either in full wave rectification mode for connec...

Page 3: ...ection to the mains or other high voltage sources further to what is provided in this document Please do not ask us for additional information pertaining to direct mains connections or using internall...

Page 4: ...e connecting to the power supply One HVM will draw around 80mA from the 15V supply and 80mA from the 15V supply The Oakley RPSU features current limiting but only what is built into the two power devi...

Page 5: ...ave rectification The fuse type should be a slow blow or anti surge type The size is 20mm It should be rated at between one and two times the maximum current of your wallwart Thus a 500mA AC output ma...

Page 6: ...e output voltage You should select 15V for operation with the RPSU board I do not recommend you take more than 125mA per rail Because this is a single phase unit the Oakley PSU is wired in half wave r...

Page 7: ...ropriate socket If you wish you can ditch their connector and use your own Maplin in the UK sell a suitable three way connector to fit the Yamaha one perfectly Their part number is FM51F In the UK the...

Page 8: ...ly connects S1R and S1S together when switched on You can replace the switch with a simple wire link but I do recommend that a switch be fitted so the socket doesn t have to take the full surge curren...

Page 9: ...R and S2S together and S1R and S1S together when switched on You can replace the switch with two wire links but I do recommend that a switch be fitted so the socket doesn t have to take the full surge...

Page 10: ...r information other than that included here will be provided by myself or Paul Darlow regarding the construction of mains powered items For powering a HVM and an SE330 together then the mains transfor...

Page 11: ...ble insulated case is not practical you should ensure that any exposed external metal parts be properly earthed The case should be bonded to earth using an M4 screw toothed washer washer solder tag an...

Page 12: ...Mains wiring diagram For experienced builders only 12...

Page 13: ...and I are on this group as well as many other users and builders of Oakley modules If you have a comment about this user manual or have a found a mistake in it then please do let me know Last but not...

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