File:Vacuum tube push-pull amplifier 1924.jpg
Vacuum_tube_push-pull_amplifier_1924.jpg (646 × 226 pixels, file size: 33 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 07:19, 4 February 2018 | 646 × 226 (33 KB) | Chetvorno | User created page with UploadWizard |
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