User talk:117.254.55.172

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February 2011[edit]

Welcome to Wikipedia. The recent edit you made to Programmable gain amplifier has been reverted, as it appears to be unconstructive. Use the sandbox for testing; if you believe the edit was constructive, ensure that you provide an informative edit summary. You may also wish to read the introduction to editing. Thank you. Logan Talk Contributions 20:02, 2 February 2011 (UTC)