

A PSU of such type is referred to as SMPS, which stands for switch mode power supply. Most modern power supplies except for linear amplifiers are of switching type. There are two main classes of PSU depending on the mode of operation of their semiconductors: linear and switching. The subsequent development of SCR, bipolar transistors and especially high-voltage MOSFETs dramatically changed the industry and resulted in rapid expansion of various power electronics applications.

Originally it started with the application of grid-controlled gas-filled tubes for power control. Please read our FULL item description before buy it.Power electronics originated about a century ago. Condition: Used, Condition: 100% Working unit. Please leave a note if you want drop-shipping service. Shipping carrier can be changed without any notice. If you want to use your own shipping label, please contact us immediately after purchase a product. (CLOSED on SAT, SUN) We do not offer faster shipping service than we provided on shipping option tab. Payment : Paypal and Major Credit Card Accepted through eBay Shipping operation day: Monday - Friday Same-day ship out available before CUT OFF time (Deadline): 7:00AM PT (10:00AM ET) Friday: If you order an product after deadline, it will be shipped on next available business day. Any international buyer or location must return a product at your cost. This policy will be covered in United States ONLY. Return: We provide free return shipping label. If you have any issue, please send a message us first then we will fix the issue smoothly. You will receive the product same condition as reference picture above (*Serial #, revision # or Sub-model # can be different) POLICY Warranty : 30 Days money back guaranteed by eBay except AS-IS product. DETAILS 100% working, tested and confirmed by authorized technician.

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