There are two types of voltage converters: transformer-based and solid-state. While this is not generally referenced on the product label, it will usually be covered in the product manual or instructions. If the manual or instructions does not indicate specifically which type you have, look for warnings about what devices can be used with the converter. Solid-state converters are limited to use with non-electric heating appliances, where transformer-based converters are limited by their voltage and wattage ratings.
As the name indicates, a transformer-based converter uses a power transformer to convert the voltage. Transformer-based converters are usually moderate to low wattage and can be used with a variety of electrical and electronic devices, from desktop calculators to low-wattage audio/video devices. They are particularly used with portable equipment such as camcorders, portable CD players, and electric shavers.
In contrast, solid-state converters use solid-state circuitry to convert the voltage. While solid-state converters often have a much higher wattage rating (up to 1600 watts), they are limited to use with non-electronic heating appliances, such as hair dryers, coffee makers, hot plates, electric blankets, heating pads and incandescent lights, so long as the appliance does not have digital timing or temperature controls or have an automatic on/off feature.
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