CNCPowerSupply
Motor / Controller / Transformer combinations:
(Use the prices shown only as a guide)
The original matrix is based on one roduced on the Arc Euro Trade site, but it has been updated with current information, and as CPC have dropped most of their heavier transformers ( since they are also supplied by the main Farnell division ), alternatives supplied byRapid have been included. If you find that any of the parts have been superceeded please send a correction as keeping track of these can take some time. All the listed parts are RoHS compliant which was the last time a full check was carried out.
Information on assembling a power supply will be provided later.
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Motor |
Controller |
No. of Motors |
Transformer |
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AC420484610 |
SMD093064 |
1 |
2x25v @ 1A 50VA 953-0398 £9.87 (Farnell) |
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2x25v @ 1A 50VA 88-2624 £9.20 (Rapid) |
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2x25v @ 1A 50VA 223-7939 £11.28 (R.S.) |
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3 |
2x25v @ 3.2A 160VA 953-0665 £16.28 (Farnell) |
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2x25v @ 3.2A 160VA 88-2558 £14.10 (Rapid) |
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2x25v @ 3.2A 160VA 223-8106 £17.45 (R.S.) |
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AC570764525M/I AC571157525M |
1 |
2x25v @ 3.2A 160VA 953-0665 £16.28 (Farnell) |
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2x25v @ 3.2A 160VA 88-2558 £14.10 (Rapid) |
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2x25v @ 3.2A 160VA 223-8106 £17.45 (R.S.) |
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3 |
2x25v @ 10A 500VA 953-2900 £26.27 (Farnell) |
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Rapid do not stock a suitable unit |
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2x25v @ 10A 500VA 223-8257 £27.20 (R.S.) |
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With the transformer output windings wired in parallel, the output voltage needs to be between 18V and 26V per winding and current rating should be 2x the motor current set on the controller. |
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AC570764525M/I AC571157525M |
SMD1478250 |
1 |
2x55v @ 2.7A 300VA 953-0967 £21.77 (Farnell) |
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2x55v @ 2.7A 300VA 88-2608 £18.35 (Rapid) |
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2x55v @ 2.7A 300VA 223-8241 £19.60 (R.S.) |
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3 |
2x55v @ 7.3A 800VA 953-3117 £43.95 (Farnell) |
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2x55v @ 7.3A 800VA 88-2660 £42.00 (Rapid) |
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2x55v @ 7.3A 800VA 223-8392 £44.00 (R.S.) |
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AC851505042M |
1 |
2x55v @ 4.5A 500VA 433-7451 £25.55 (Farnell) |
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2x55v @ 4.5A 500VA 88-2612 £26.00 (Rapid) |
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2x55v @ 4.5A 500VA 223-8314 £27.20 (R.S.) |
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3 |
2x40v @ 12.5A 1000VA 953-3141 £61.25 (Farnell) |
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2x40v @ 12.5A 1000VA 88-2662 £49.00 (Rapid) |
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2x40v @ 12.5A 1000VA 233-8443 £48.60 (R.S.) |
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With the transformer output windings wired in parallel, the output voltage needs to be between 30V and 55V per winding and current rating should be 2x the motor current set on the controller. |
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Bridge Rectifiers:
A suitable bridge rectifier would be 200V at 25A.
200v @ 25A 954-9382 £2.49 (Farnell)
200v @ 25A 395-4203 £2.79 (R.S.)
Smoothing Capacitors:
The smoothing capacitor(s) need to be approx 10,000µF or higher
and the voltage rating = (transformer output volts x S2) +10,
So, using a 25v transformer (25x1.414)+10 = 45.35v Min.
50v 4700µf 945-2893 £1.89 (2off) (Farnell)
50v 6800µf 119-8551 £2.58 (2off) (Farnell)
50v 10000µf 945-2907 £7.00 (1off) (Farnell)
63v 6800µf 11-1533 £1.78 (2off) (Rapid)
63v 10000µf 11-1534 £9.50 (1off) (Rapid)
50v 4700µf 381-9087 £6.08 (2off) (R.S.)
50v 10000µf 381-9100 £8.78 (1off) (R.S.)
and, using a 55v transformer (50x1.414)+10 = 87.55v Min.
100v 4700µf 945-2974 £4.42 (2off) (Farnell)
100v 6800µf 119-8729 £11.77 (2off) (Farnell)
100v 10000µf 882-0929 £15.52 (1off) (Farnell)
100V 4700µf CA04022 £11.11 (CPC)
100V 10000µf CA04023 £17.94 (CPC)
100v 4700µf 381-9166 £9.75 (2off) (R.S.)
100v 10,000µf 381-9188 £16.69 (1off) (R.S.)