Many standard AC-DC switched mode power supplies (most of TDK-Lambda’s products) will operate from a high voltage DC input range (typically 120-330Vdc) in addition to the more common AC input range of 90-264VAC. One word of caution – carefully check the safety approval status. For many products it only covers AC-DC operation. We strongly recommend users to contact their supplier for guidance on safe installation.

We receive many questions about how and where to connect the DC input to an AC-DC supply that is specified to operate from DC as well as an AC input.

To read more about where and why DC power is used, please visit: www.emea.lambda.tdk.com/uk/faq

If you have a question you’d like to ask TDK-Lambda, please feel free to use the online FAQ form and we’ll get back to you with an answer to your question as soon as possible.