Published:2011/4/13 4:26:00 Author:may | Keyword: power supply, DATAS, color display
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Published:2011/4/13 4:22:00 Author:may | Keyword: power supply, DARAS, monochrome display
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Published:2011/4/13 4:21:00 Author:may | Keyword: power supply, display
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Published:2011/4/13 4:20:00 Author:may | Keyword: power supply, display
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Published:2011/4/13 4:56:00 Author:may | Keyword: power supply, COMPAQ, VGA, color display
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Published:2011/4/13 4:55:00 Author:may | Keyword: power supply, COMPAQ, TTL, color display
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Published:2011/4/13 4:51:00 Author:may | Keyword: power supply, VGA, high resolution, color display
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Published:2011/4/13 4:49:00 Author:may | Keyword: power supply, EGA, color display
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Published:2011/4/13 4:48:00 Author:may | Keyword: power supply, TTL, VGA, multiple frequency, color display
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Published:2011/4/13 4:45:00 Author:may | Keyword: power supply, double frequency, high resolution, color display
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Published:2011/4/13 4:43:00 Author:may | Keyword: power supply, CASPER, VGA color display
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Published:2011/4/13 4:41:00 Author:may | Keyword: power supply, CASPER, VGA color display
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Published:2011/4/13 4:53:00 Author:may | Keyword: power supply, COLOR, color display
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Published:2011/4/13 19:53:00 Author:may | Keyword: Homemade, high power, high efficient, converter module
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Published:2011/4/13 3:17:00 Author:Ecco | Keyword: Variable duty cycle, monostable multivibrator
The chart shows the variable duty cycle monostable multivibrator composed of 74HCT221. Capacitor C is charged and discharged at the same rate, the duty cycle is 50%, the oscillation period T = RC. The R in figure (a) can be replaced by the map to get other desired duty cycle, during this time, Cl is charged by R1, and discharged by R2, the oscillation period T = (R1 + R2) C / 2, the duty cycle is approximately Rl / (R1 + R2). In the figure 9-11, VDl, VD2, VD3 is the 1N4148. (View)
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Published:2011/4/13 4:21:00 Author:Ecco | Keyword: Automatic, voltage regulator, power supply
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Published:2011/4/13 4:14:00 Author:Ecco | Keyword: over-current protection , transistor, voltage regulating
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Published:2011/4/13 4:23:00 Author:Ecco | Keyword: Pulse position modulator, 555
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Published:2011/4/13 4:29:00 Author:Ecco | Keyword: monostable trigger
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Published:2011/4/13 4:28:00 Author:Ecco | Keyword: bistable flip-flop
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