Published:2013/2/18 21:04:00 Author:muriel | Keyword: CodeLock , AVR, electronic combination lock
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Published:2013/2/18 21:04:00 Author:muriel | Keyword: CodeLock , AVR , electronic combination lock
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Published:2013/2/18 21:03:00 Author:muriel | Keyword: CodeLock , AVR , electronic combination lock
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Published:2013/2/18 21:03:00 Author:muriel | Keyword: CodeLock, AVR , electronic combination lock
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Published:2013/2/18 21:02:00 Author:muriel | Keyword: CodeLock , AVR, electronic combination lock
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Published:2013/2/18 21:01:00 Author:muriel | Keyword: Simple electronic , combination lock
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Published:2013/2/18 21:00:00 Author:muriel | Keyword: Electronic Combination Lock
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Published:2013/2/18 20:59:00 Author:muriel | Keyword: Electronic Card-Lock System
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Published:2013/2/18 20:58:00 Author:muriel | Keyword: Digital Electronic , Lock circuit
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Published:2013/2/18 20:55:00 Author:muriel | Keyword: Electronic combination lock, PIC
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Published:2013/2/18 20:54:00 Author:muriel | Keyword: Electronic combination lock, PIC
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Published:2013/2/18 20:53:00 Author:muriel | Keyword: Digital Combination, Lock circuit
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Published:2013/2/18 20:52:00 Author:muriel | Keyword: Door lock, opener
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Published:2013/2/17 21:00:00 Author:Ecco | Keyword: Multi-channel laser, burglar alarm
VT1, VT2, RL1, RP1, R1, K and VD6 constitute light control switch, in the daytime, photoresistor RL1 is in a low resistance state, VT1 gets saturated conduction, VT2 is turned off, K relay is not energized, normally open contact J is in a disconnected state, the alarm circuit does not work; at night, RL1 becomes high impedance, VT1 is deadline, VT2 gets saturated conduction, K gets electrical to make J pull in, then the circuit supplies for the whole machine, red light-emitting diode is lit.
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Published:2013/2/17 20:07:00 Author:muriel | Keyword: transistor, door alarm
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Published:2013/2/17 20:06:00 Author:muriel | Keyword: Cmos Timers
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Published:2013/2/17 20:06:00 Author:muriel | Keyword: Cmos Timers
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Published:2013/2/17 20:04:00 Author:muriel | Keyword: Simple, Door, Alarm Circuit
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Published:2013/2/17 19:57:00 Author:muriel | Keyword: Remote Control Extender
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Published:2013/2/17 19:55:00 Author:muriel | Keyword: Remote Control Extender
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