FAQs
Output voltage is higher than specified - why?
Some converters need some load for an effective function of the regulation.
It is specified under “Minimum Load”. If the load is below that value the output voltage can be some 100mV up to a few Volts higher than specified. Operation in this range does not damage the converter but might have a bad impact in your application.
Operating temperature range - What does it mean?
The operating temperature range of a device is meant as the ambient temperature you would theoretically measure at the device under the assumption that the device does not produce any heat by itself.
That means, it is the temperature inside the application including every heat source around the device.
Be aware, that the operating temperature of the application is not the same as the operating temperature range
AC input voltage range on the label is different than spezified on datasheet - Why?
The wider input range on datasheet specifies the range the product is designed for. The smaller range on the label conforms to the mains it can be used for, which is an issue for certification and it considers that mains have a tolerance of ±10%. If a Power Supply is certified for mains voltage from 100 to 240 VAC the input circuit has to be designed for 90 to 264 V
Protection class I or II - What is the difference?
In a Class II appliance, the user is protected by at least two layers of insulation (double or reinforced) between the current carrying parts and any metal accessible to the user.
Output voltage is higher than specified - why?
Some converters need some load for an effective function of the regulation.
It is specified under “Minimum Load”. If the load is below that value the output voltage can be some 100mV up to a few Volts higher than specified. Operation in this range does not damage the converter but might have a bad impact in your application.
Operating temperature range - What does it mean?
The operating temperature range of a device is meant as the ambient temperature you would theoretically measure at the device under the assumption that the device does not produce any heat by itself.
That means, it is the temperature inside the application including every heat source around the device.
Be aware, that the operating temperature of the application is not the same as the operating temperature range
AC input voltage range on the label is different than spezified on datasheet - Why?
The wider input range on datasheet specifies the range the product is designed for. The smaller range on the label conforms to the mains it can be used for, which is an issue for certification and it considers that mains have a tolerance of ±10%. If a Power Supply is certified for mains voltage from 100 to 240 VAC the input circuit has to be designed for 90 to 264 V
Protection class I or II - What is the difference?
In a Class II appliance, the user is protected by at least two layers of insulation (double or reinforced) between the current carrying parts and any metal accessible to the user.