User talk:49.128.170.166

September 2016
Hello, I'm Materialscientist. I wanted to let you know that one or more of your recent contributions to Switched-mode power supply have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you think a mistake was made, or if you have any questions, you can leave me a message on my talk page. Materialscientist (talk) 07:20, 17 September 2016 (UTC)
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August 2020
Please refrain from making unconstructive edits to Wikipedia, as you did at Onam. Your edits appear to constitute vandalism and have been reverted. If you would like to experiment, please use the sandbox. Repeated vandalism may result in the loss of editing privileges. Thank you. Toddst1 (talk) 22:47, 24 August 2020 (UTC)
 * If this is a shared IP address, and you did not make the edits referred to above, consider creating an account for yourself or logging in with an existing account so that you can avoid further irrelevant notices.