X-CAN V3 Power Supply Unit now available!

[PinkFloyd]

I've been asked by quite a few people if I would build an X-CAN V3 PSU so.............. here it is:



I've kept it as simple as possible omitting noisy things like LEDs and have concentrated on making it as bullet proof and minimalist as possible.

The rear of the unit is the business end (nothing on the front panel at all!!) and incorporates a robust ON / OFF switch, AC inlet filter, chassis mounted fuse holder and a fixed 3 way din plug for connecting to the X-CAN V3. The toroidal is a high quality 30VA encapsulated type.

This PSU is designed to be hidden away out of sight and is not jam packed with neon lights and sparkly things....... for a reason....... less is more! This is simply a very good PSU so people who like their equipment to light up like a christmas tree need not apply.

All connections are hard wired, then heat sleeved, cable tied and then (in places) strategically blobbed with hot melt glue to provide excellent strain relief.

Sound quality is very good with the little pinkie (codename for the PSU) providing better clarity and bass extension over the stock wallwart.

Price is £90 for this hand built PSU and I am taking orders now. Unfortunately, mainly due to weight and shipping costs, I will only make these for the UK market. Details on how to build your own will appear on www.rock-grotto.co.uk/xcanpropage.htm in due course (will also include instructions for the overseas market)

Specifications:

Toroidal

..Flash tested at 4000 Volts rms
..Fully encapsulated to UL94V-0
..Low level of radiated magnetic field
..Operating frequency 50/60Hz
..Maximum ambient temperature +40°C
..Meets all requirements of class A (105°C)
..Maximum ambient operating temperature 40°C
..Manufactured in accordance with EN60742, EN60065 and EN60950
..UL recognised to UL1411 file E115159
..Regulation (%) 16

IEC Inlet Filter

Maximum leakage 115V AC 60HZ:0.25mA 230V AC 50Hz:0.5mA
Inductance 1A 6.5mH 3A 2.5mH 6A 0.8mH
Capacitors 100n between lines (Class X2) 2n2 lines to earth (Class Y)

Overall

Unit weight.. (packed) 1.5kG
On / Off switch
Voltage 24VCT (12-0-12)
30VA

[PinkFloyd]

mrarroyo said:

UK only! excellent, Miami Beach heck for that matter the entire state of Florida was annexed by GB today. Man am I lucky. Of course that means now I get free shipping, right. Just kidding.

Mike, I have heard a lot of people claim that "R transformers" (whatever that means) are a good alternative. What do you think?

Don't worry Miguel I'll sort you out a PSU pretty soon

Mike.

[PinkFloyd]

Some bumph on R core transformers from www.custommag.com/products/r-core.shtml:

R-core is unique type of core designed and developed by Japanese engineers. These cores are manufactured in the conventional rectangular shape but the slitting is done by a special process, ensuring high stacking factor. The special heat treatment, continuous strip and no gap ensure higher efficiency to the transformers.

The cores are manufactured using M4 & M2H grade material of 0.23 / 0.27 mm thickness and available in various standard sizes.

R-core Transformers are manufactured using the unique rectangular core with round cross section known as R-core. The special feature of this transformer is that the core is gap less and continuous. The winding is done on special round bobbins on two parallel legs of the core. In comparison with EI Transformers of same capacity, the R-core transformer is COMPACT (nearly 40% smaller) and has a LOW TEMPERATURE ELEVATION.

Further the LEAKAGE FLUX of the transformer IS VERY LOW (about 1/10th of conventional transformers), which permits the equipment manufacturer to place the transformer close to critical electronic components. The balanced winding & low leakage flux ensures LOW NOISE of the transformers. This gives a cutting edge to the transformer for use in Medical Equipment, Audio & Video amplifiers & other noise sensitive equipment.

The other unique feature is the use of Bobbins in two parts. The primary winding and secondary winding are done on separate bobbins thus ensuring complete isolation between the two windings. This allows meeting of any safety standards requirement.

The R-core Transformers have found wide application in CRT display units, Audio equipments, Satellite receivers, Bio-medical equipment, Printers, Photo-copier machines, weighing scales and many more.

1. The special characteristic of the R-core transformer is the ability of the two coils to mutually cancel each other's magnetic flux by means of balanced, symmetrical winding of the coils. With this winding method the leakage flux can be kept to a minimum amount. The key point is the exact balance of the two coils.

2. The R-core transformer has absolutely no gap in its magnetic paths. On the other hand, the EI-type has a magnetic gap in 6 locations, and the CI or the cut core type has 2 to 4 magnetic gaps. A great deal of leakage flux escapes from these magnetic gaps.

3. The R-core transformer makes a maximum use of the superior material properties of the Z-H grain-oriented silicon steel. As a result, the core's magnetic resistance is very low, and the cross section of the magnetic path is uniform. The exciting current of the R-core transformer is lower than the EI-type ensuring that the leakage flux is minimal and a higher percentage of the entire magnetic flux of the R-core transformer is being put to much more effective use.

Yes, these would be great for audio usage.

[PinkFloyd]

I didn't write all that stuff Miguel it's from www.custommag.com/

Mike.