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| Specialising in power supplies, battery chargers, laptop adaptors, mobile phone chargers and computer power supplies. |
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| Specialising in power supplies, battery chargers, laptop adaptors, mobile phone chargers and computer power supplies. |
The PowerSupplies Online range of Step Up and Step Down voltage converters are ideally suited to small portable electronic equipment.
They are not intended for use with:
Fridges
Microwave Ovens
Hair driers,
Hair rollers
Irons or any other AC power equipment that is used to provide heat.
The following examples are intended for guidance only; if you are in any doubt as to the suitability of this product for your application, please take guidance from a qualified electrician
The converters are rated at the following Power (Step Up 100 & 300VA; Step Down 45, 100 & 300VA)
Always choose a converter that is capable of providing more VA than the appliance requires!!
The VA for an intended application can be easily calculated to assist in the correct selection of the most suitable voltage converter for a given application,
For example
To run a simple UK domestic light bulb in the USA you would need to calculate the following:
A typical 240 VAC domestic light bulb is rated at 40W, 60W or 100W, from these figures and knowing the AC voltage it is possible to calculate the AC current that is consumed when the light is illuminated
240VAC ÷ 40W = 0.166 amps
0.166A x 240 VAC = 39.94VA
This would mean that a 45VA STEP UP voltage converter would be required
(As a simple comparison this W (watt) figure can be interrelated as VA)
To run a 40W USA lamp in the UK then the following calculation would be used:
110VAC (USA mains Voltage) ÷ 40W = 0.364A
110VAC x 0.364A = 39.99 VA
Again a 45VA converter would be required but this time it would be a STEP DOWN
As is often the case the Watts are not always shown instead the current consumed by the device is stated, to calculate the VA the following calculation would be used:
Input Voltage to appliance 240 Vac
Rated input current 0.8 amps
VA is calculated as follows
240 x 0.8 = 192 VA
This requirement would require a minimum of 200VA either Step Up or Step Down dependant of origin of device and intended country of operation,
Warning!
If you are unsure about the operating requirements of any equipment then please seek the advice of a qualified electrician.
An internal “one shot” thermal fuse protects the converter; this fuse cannot be replaced on any of the units and it will only activate in the case of over current operation or high operating ambient.
Units returned for replacement that are found to have failed due to the fuse failing will not be subject to any warranty claim.
PowerSupplies Online will not be responsible for damage to any equipment that is operated from these devices.
Last Amendment: 04/12/2006 20:16:49
