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Combined display of all available logs of Helpful. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).
- 16:09, 21 April 2020 Helpful talk contribs uploaded a new version of File:OpAmp-inverting amplifier.png (consistency detail)
- 16:08, 21 April 2020 Helpful talk contribs uploaded a new version of File:OpAmp-inverting amplifier.png (some whitespace)
- 19:24, 22 November 2011 Helpful talk contribs uploaded File:OpAmp-inverting amplifier.png (Own work)