What is a UL listed AC adapter?
What is a UL-certified AC adapter? A UL-certified AC adapter bears an authorized UL Mark. This means it has been evaluated and meets the appropriate Standard for Safety. These adapters comply with UL safety requirements for the US.
How do I know if my adapter is regulated?
You can generally stick one probe into the middle of the connector, and hold the other against the outside. With a few exceptions, the middle is positive, so use the red lead there, and use the black lead on the outside shell. Regulated supplies, without any load, should measure very close to the target voltage of 12v.
What is an Intertek AC adapter for?
This power supply allows you to operate your device or charge its battery from electrical power outlets. This adapter converts AC power into the DC power required by your device.
What is a 12v regulated power supply?
A 12V Regulated power supply is an integral part of any DC supply unit used in electronic equipment. It serves as an interface between a wall outlet and common power electronic equipment.
How do you know if a power strip is UL approved?
Be sure that the product is listed as a transient voltage surge suppressor. This means that it meets the criteria for UL 1449, UL’s minimum performance standard for surge suppressors. There are a lot of power strips listed by UL that have no surge protection components at all.
Is AC adapter safe?
Use only the AC adapter and power cord that came with your product. Do not use the AC adapter with any other equipment and use only with the specified voltage. Using the wrong AC adapter and power cord may result in damage, overheating, fire, or electric shock.
How do you tell if a power supply is regulated or unregulated?
In regulated power supplies, the output DC voltage is regulated so that a change in input voltage is not reflected in the output. In contrast, unregulated power supplies do not have a voltage regulation at the output. This is the key difference between regulated and unregulated power supply.
What is a Class 2 adapter?
Class II (with Roman numerals) refers to power supplies with either a double or reinforced insulation barrier between the input and the output. Class II supplies do not rely on an earth connection to protect against shock hazard. Many cell phone chargers and laptop power supplies are Class II.
What is the difference between regulated and unregulated power supply?
Are all surge protectors UL 1449?
UL’s safety and performance standard for Surge Protective Devices (SPD), formerly known as Transient Voltage Surge Suppressors (TVSS), is UL 1449. This standard applies to end-users, manufacturers, and specifiers.