Published:2013/1/31 19:55:00 Author:muriel | Keyword: +/-5A , Voltage Controlled , Current Source
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Published:2013/1/31 19:54:00 Author:muriel | Keyword: Easy-Server, V0.9
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Published:2013/1/31 19:52:00 Author:muriel | Keyword: Solar Energy Meter
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Published:2013/1/31 19:52:00 Author:muriel | Keyword: Power Supply
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Published:2013/1/31 19:51:00 Author:muriel | Keyword: Control, Display , PC interface section
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Published:2013/1/31 19:50:00 Author:muriel | Keyword: Solar Server
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Published:2013/1/31 19:49:00 Author:muriel | Keyword: Tiny Server
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Published:2013/1/31 19:47:00 Author:muriel | Keyword: Simple, RS232C, Level Converters
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Published:2013/1/31 1:35:00 Author:Ecco | Keyword: Three-phase , power supply, phase sequence indicator
This circuit can determine the phase relationship of the AC power. FF1 is a D flip-flop in the dual D flip - flop 4013. The three ends (U, V, W) in the circuit is directly connected to the three - phase power supply. If the phase relationship of the AC power supply is arranged clockwise like U, V, W sequentially arrangement, the green LED D4 is lit; if the phase is counterclockwise arrangement, the red light emitting tube D3 is lit.
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Published:2013/1/31 0:48:00 Author:Ecco | Keyword: moisture condensation , sensor, application
The condensation sensor can be used in the VCR as well as a variety of humidity control circuits. Figure 1 illustrates the bathroom mirror moisture removal device which is produced with condensation sensor.
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Published:2013/1/31 0:41:00 Author:Ecco | Keyword: tubes , fixed, gate , negative pressure mode, power amplifier
The tubes fixed gate negative pressure mode power amplifier circuit:
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Published:2013/1/31 1:32:00 Author:Ecco | Keyword: vacuum tube, push-pull amplifier
When the resistive load of push - pull amplifier is 5kΩ, 6L6 amplifier tube is in the class A push - pull state, screen voltage is 280V, and when the signal changes to the full signal from zero, the screen current change is 120 ~ 140 mA, and output power is l5W.
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Published:2013/1/31 0:44:00 Author:Ecco | Keyword: Variable pitch, multivibrator
This circuit is composed of two 555 time-base circuits, and it can issue 400 ~ 2500Hz oscillatory wave with continuous changes, it is similar to the sound of public security police vehicles. The circuit consists of the boot delay, low-frequency oscillator and modulated tone generator.
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Published:2013/1/30 21:17:00 Author:muriel | Keyword: 2nd version , RS232C, level converter
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Published:2013/1/30 21:17:00 Author:muriel | Keyword: Simple RS232C, Level Converter
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Published:2013/1/30 21:16:00 Author:muriel | Keyword: DTMF Dialer , Coding Table
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Published:2013/1/30 21:16:00 Author:muriel | Keyword: Isolated RS232C
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Published:2013/1/30 21:15:00 Author:muriel | Keyword: Isolated RS232C, PIC16F84
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Published:2013/1/30 21:15:00 Author:muriel | Keyword: DS1202, Real-time , Clock
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Published:2013/1/30 21:14:00 Author:muriel | Keyword: RS232C, Level Converter
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