Published:2011/4/13 3:27:00 Author:Jessie | Keyword: colpitts oscillating
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Published:2011/4/13 3:29:00 Author:Jessie | Keyword: electric door lock
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Published:2011/3/23 3:56:00 Author:Jessie | Keyword: horn protection
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Published:2011/3/24 2:46:00 Author:Ecco | Keyword: Light modulator receive
Q1, Q2 constitute of two class transistor amplifiers and used as zooming the modulating output semaphore of silicon solar battery. To 5lm/ft2 (lft=30.48 cms) beam of light modulated by 1000HZ, when the R is requlated to the biggest gain, the circuitry will produce 1V virtual value of voltage in output port.
Thiscircuitry issuitable foroptics correspondence andwarning system. (View)
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Published:2011/3/23 3:32:00 Author:Jessie | Keyword: DC motor, speed control
This circuit can be used to control the rotating speed and direction of low power dc motors, series motorsor parallel motors. Motorsseries with rectifier bridge G1, then access them to the power transformer secondary windings n2. If rectifier bridge output terminal is impassability, motor stops, this is like potentiator's sliding contacts RP inmiddle position, if sliding contacts move upward or downward, then motor will rotate positive direction or reverse direction, so it can control the rotating of motor.
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Published:2011/3/23 3:55:00 Author:Jessie | Keyword: Thermistors, protection, rectifier
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Published:2011/4/12 22:52:00 Author:Rebekka | Keyword: CMos drive circuit
CD4054 A, CD4055A or CD4056A CMOS direct drive 7 LCD display digit.The circuit has the feature of internal level shift. The feature is to change 5V logical rotation to state-driven consumption LCD. It is integrant for 30V peak AC signal used by the LCD.
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Published:2011/3/23 21:50:00 Author:muriel | Keyword: IGBT , drive circuit, discrete component, TLP560
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Published:2011/4/12 22:42:00 Author:Rebekka | Keyword: Direct drive LCD display
Each part of LCD has individual counter, latch, decoder and driver. Pumping signal feeds back to the motherboard of LCD. When the display section is disconnected, the phase and amplitude of the motherboard and display segment drive signal are the same. It shows no voltage on the 2 ends of display. When the display segment is triggered, its pumping signal phase position will be lager than 180 °, so the square wave voltage is 2 times than power supply voltage value. BCD code input signal can be produced from the dual BCD counter of cascade MC14518.
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Published:2011/4/12 22:40:00 Author:Ecco | Keyword: Light control, alarm circuit, fire alarm , night burglar alarm
The circuit is available for hunters, fishermen when they want to go out at dawn. The flashlight or inside lights can trigger this circuit, it is also used as a fire and night burglar alarm circuit. Only when the lights turn off, the alarm can be stopped.
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Published:2011/3/27 22:22:00 Author:muriel | Keyword: Unipolarity , gate , drive circuit, 0/+15v, IGBT
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Published:2011/3/24 20:50:00 Author:muriel | Keyword: Drive circuit, grid , turn-off , clamping circuit, IR1120
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Published:2011/4/6 4:14:00 Author:Nicole | Keyword: sound control, electronic corsage
This circuit is composed of noise source amplifier and LED drive circuit. As sound detection devices, microphone changes acoustic signal into electrical signal, after BG1, BG2 amplification, drive BG3 lights up LED. (View)
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Published:2011/4/11 22:57:00 Author:Jessie | Keyword: Ceramic oscillation
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Published:2011/4/11 22:34:00 Author:Jessie | Keyword: electric rearview mirror
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Published:2011/4/11 22:32:00 Author:Jessie | Keyword: rear defogger, heated mirrors
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Published:2011/4/11 22:33:00 Author:Jessie | Keyword: shift interlock
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Published:2011/4/11 22:29:00 Author:Jessie | Keyword: Sunshade
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Published:2011/4/11 22:27:00 Author:Jessie | Keyword: trunk pull-down
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Published:2011/3/29 20:19:00 Author:may | Keyword: monitor alarm interface
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