Fayl:Original Abraham-Bloch multivibrator circuit.png
Bu prevyuning hajmi: 800 × 560 piksel. Boshqa oʻlchamlari: 320 × 224 piksel | 640 × 448 piksel | 1 024 × 717 piksel | 1 360 × 952 piksel.
Asl fayl (1 360 × 952 piksel, fayl hajmi: 195 KB, MIME tipi: image/png)
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Inspector
| Taʼrif |
English: The first astable multivibrator circuit, invented by French engineers Henri Abraham and Eugene Bloch, from their 1919 paper. The Abraham-Bloch multivibrator, built with triode vacuum tubes, was the first relaxation oscillator circuit, and the predecessor of the Eccles-Jordan flip-flop widely used in modern digital logic. Abraham called the cross coupled-oscillator a multivibrateur because its square-wave output was rich in harmonic frequencies, unlike the existing sine wave oscillators. The text gives the component values as R1 = R2 = 50 kΩ, r1 = r2 = 75 kΩ, C1 and C2 are 8 pF adjustables. The circuit could oscillate at frequencies up to 50 kHz. |
| Sanasi | |
| Manba | Retrieved February 4, 2014 from Richard Glazebrook 1922 A Dictionary of Applied Physics, Vol. 2: Electricity, MacMillan and Co., New York, p. 633, fig. 8 on Google Books. Credited in source to to H. Abraham, Comptes Rendus, Vol. 168, 1919, p. 1105 |
| Muallif | Henri Abraham |
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| Sana/Vaqt | Miniatura | Oʻlchamlari | Foydalanuvchi | Izoh | |
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| joriy | 16:54, 13-Iyul 2019 | | 1 360 × 952 (195 KB) | Dicklyon | better grab from the same source, cleaned up a little |
| 08:32, 6-Fevral 2014 |  | 382 × 241 (5 KB) | Chetvorno | User created page with UploadWizard |
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