Published:2011/12/6 21:22:00 Author:Ecco | Keyword: multi-function fan , frogs calling , control circuit
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Published:2011/12/6 21:45:00 Author:Ecco | Keyword: Multi-function fan , animal sound , control circuit
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Published:2011/12/6 21:44:00 Author:Ecco | Keyword: Multi-function fan , nature sound , control circuit
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Published:2011/12/6 21:43:00 Author:Ecco | Keyword: Multi-function fan , seashore , control circuit
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Published:2011/12/6 21:42:00 Author:Ecco | Keyword: Multi-function fan , twitter , control circuit
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Published:2011/12/6 21:40:00 Author:Ecco | Keyword: Multi-function fan , control circuit
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Published:2011/12/6 21:20:00 Author:Ecco | Keyword: Automatic kitchen ventilator
The circuit isshown in the chart, when thecooking smoke smells heavy,the hood starts automatically to emitsound and light alarm signals ; until the smoke concentration decreases , it will automatically cut off the power of hood M.
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Published:2011/12/6 1:47:00 Author:Ecco | Keyword: Automatic, intermittent lubrication , control circuit
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Published:2011/12/6 1:47:00 Author:Ecco | Keyword: DC motor, PWM speed control
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Published:2011/12/6 1:52:00 Author:Ecco | Keyword: Voice filter
The filter circuit in the voice frequency range is composed of concatenation elements, and the frequency rangeis 360Hz ~ 3kHz.
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Published:2011/12/6 21:04:00 Author:Ecco | Keyword: filter, regulator, different application areas
Figure a ~ k show the filters or regulator circuits which can be applied to different frequency bands.
It can adjustband-pass in 750Hz ~ 2500Hz.
Languageband band-pass fu = 300Hz, f0 = 3500Hz
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Published:2011/12/6 21:06:00 Author:Ecco | Keyword: single-phase, bridge rectifier , Π filter
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Published:2011/11/30 0:49:00 Author:Ecco | Keyword: analog , rotary , award guessing device
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Published:2011/11/30 2:17:00 Author:Ecco | Keyword: Several, typical application
The outputs of the circuits shown in Figure (a), (b), (c), (d) are respectively directly drive the output transistor , SCR , relay , COMS circuit , TTL circuit.
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Published:2011/11/30 1:42:00 Author:Ecco | Keyword: interface circuit, SH Hall switch , double silicon output
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Published:2011/11/30 1:41:00 Author:Ecco | Keyword: interface circuit, SH Hall switch , emitter output
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Published:2011/11/30 1:25:00 Author:Ecco | Keyword: Schmidt circuit , optical coupler
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Published:2011/11/30 1:27:00 Author:Ecco | Keyword: Gate circuit , optical coupler
(a) AND gate; (b)NAND gate; (c)OR gate; (d)NOR gate.
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Published:2011/11/30 1:21:00 Author:Ecco | Keyword: switching circuit , optocoupler
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Published:2011/12/2 1:54:00 Author:Ecco | Keyword: internal circuit, IC
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