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Index 1793

the sound controlled core circuit

Published:2011/6/3 7:21:00 Author:Seven | Keyword: sound controlled

the sound controlled core circuit
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The imported electric razor circuit

Published:2011/6/3 6:56:00 Author:Seven | Keyword: electric razor

The imported electric razor circuit
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The classical high-frequency head circuit

Published:2011/6/3 7:16:00 Author:Seven | Keyword: high-frequency

The classical high-frequency head circuit
The classical high-frequency head circuit,FM, it is only for reference, the parameter of the element is self-decided.   (View)

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The separation thermocouple circuit of compensation

Published:2011/6/3 7:19:00 Author:Seven | Keyword: separation thermocouple

The separation thermocouple circuit of compensation
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The low-cost air-conditioning MPUH of PIC16C54

Published:2011/6/3 6:49:00 Author:Seven | Keyword: air-conditioning MPUH

The low-cost air-conditioning MPUH of PIC16C54
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The principle circuit of classical Motorola L7 cellphone (3/7)

Published:2011/6/3 7:05:00 Author:Seven | Keyword: principle circuit, Motorola

The principle circuit of classical Motorola L7 cellphone (3/7)
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The principle circuit of classical Motorola L7 cellphone (4/7)

Published:2011/6/3 7:07:00 Author:Seven | Keyword: principle circuit, Motorola

The principle circuit of classical Motorola L7 cellphone (4/7)
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Field Frequency Identification Unit Circuit Diagram

Published:2011/6/9 4:20:00 Author:Vicky | Keyword: Field Frequency Identification Unit,

Field Frequency Identification Unit Circuit Diagram
Field Frequency Identification Unit Circuit Diagram

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Three Digit Capacitance Circuit Diagram

Published:2011/6/9 4:29:00 Author:Vicky | Keyword: Three Digit Capacitance,

Three Digit Capacitance Circuit Diagram
Three Digit Capacitance Circuit Diagram

Three digit capacitance as shown in the picture is composed of basic pulse generator, gated circuit, control gate ,counter and decoding display. The compositionand relation ofthe measuring range of every capacitancerating :   (View)

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Bridge Rectifier Demonstrator Circuit Diagram

Published:2011/6/9 4:26:00 Author:Vicky | Keyword: Bridge Rectifier Demonstrator Circuit,

Bridge Rectifier Demonstrator Circuit Diagram
Bridge rectifier demonstrator circuit is a AC/DC conversion circuit. Bridge rectifier demonstrator circuit shown as in the picture reveals how the two groups of communication diode works in turn in the bridge rectifier circuit. It is made of pulse generator circuit, current direction control circuit, demonstrator circuit and power supply.   (View)

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Arbitrary Number Pulse Circuit Diagram

Published:2011/6/9 3:53:00 Author:Vicky | Keyword: Arbitrary Number Pulse,

Arbitrary Number Pulse Circuit Diagram
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Internal Circuit Diagram of LM2931 Integrated Circuit

Published:2011/6/9 3:54:00 Author:Vicky | Keyword: LM2931 Integrated Circuit,

Internal Circuit Diagram of LM2931 Integrated Circuit
Functions and Characteristics The Interior of LM2931 Integrated Circuit is mainly made of over-current protection circuit, over-voltage protection circuit and over-heat protection circuit, and it has the function of automatically stopping output when the power supply is reversed. The internal circuit diagram of LM2931 integrated circuit is as shown in the picture.   (View)

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Digital Level Monitor Circuit Diagram

Published:2011/6/9 4:05:00 Author:Vicky | Keyword: Digital Level Monitor,

Digital Level Monitor Circuit Diagram
As is shown in the picture, digital level monitor can display the outgoing sound volume of sound amplifier by numbers. Because it adopts one digit display tube, the level it can display is from 1 to 9.   (View)

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Sixteen Channels Digital Display Auto-patrol Circuit Diagram

Published:2011/6/9 4:08:00 Author:Vicky | Keyword: Sixteen Channels Digital Display Auto-patrol,

Sixteen Channels Digital Display Auto-patrol Circuit Diagram
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Ceramic Crystal Detector Circuit Diagram

Published:2011/6/9 4:08:00 Author:Vicky | Keyword: Ceramic Crystal Detector

Ceramic Crystal Detector Circuit Diagram
Ceramic crystal is crystal-type oscillator component used by infrared remote control launcher. The spoilage rate is comparatively high , and it is usually difficult to judge whether it is good or not in repairing. The detector as shown in the picture can quickly determine whether good or bad, which provides great convenience for repairing. The ceramic crystal detector actually is a three digit explicit frequency indicator, and the unit is KHz.   (View)

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Reaction Capability Tester Circuit Diagram

Published:2011/6/9 4:00:00 Author:Vicky | Keyword: Reaction Capability Tester, CD4017

Reaction Capability Tester Circuit Diagram
Reaction Capability Tester is used to test and train man’s quick-response capability. It has various type of construction and the Reaction Capability Tester as shown in the picture is composed of decimal counter CD4017 and luminous diode. The construction of Reaction Capability Tester is simple and can be used as a plaything to train and test children’s quick- response capability.   (View)

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The beverage temperature controller circuit of fast heating and cooling

Published:2011/6/9 21:56:00 Author:qqtang | Keyword: beverage temperature controller, fast heating and cooling

The beverage temperature controller circuit of fast heating and cooling
The beverage temperature controller circuit of fast heating and cooling
The beverage temperature controller circuit of fast heating and cooling
The beverage temperature controller circuit of fast heating and cooling
The beverage temperature controller circuit of fast heating and cooling
The beverage temperature controller circuit of fast heating and cooling

The hardware of the temperature control system consists of temperature measuring and A/D switch circuit, signal test and process circuit, key scanning and displaying circuit, control output circuit and power supply circuit and so on. The circuit is shown in the figure.(1) signal test and process circuit: the core of the temperature controller is the high quality-price ratio 8-bit micro-controller AT89C2051, which is used to complete the data measuring and processing, so that it can fulfill the measure and control function of the beverage temperature.(2) temperature measuring and A/D switch circuit   (View)

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The schematic diagram of LCD digital displayer construction

Published:2011/6/9 22:06:00 Author:qqtang | Keyword: schematic diagram, LCD digital displayer

The schematic diagram of LCD digital displayer construction
LCD displayer is also called LCD digital displayer, whose construction is shown in the figure. The main material of LCD displayer is liquid crystal(abbreviated as LC) which is a organic material, in certain temperatures, it not only has the mobility of the liquid, but also has the light character, its transparence changes with the electric field, magnetic field, light, temperature and other outside conditions. Therefore, under the effect of the logic circuit output signals, it can indicates some certain numbers. LCD displayer is a passive displaying element.   (View)

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BA6104--the 5 bit LED potentiometer drive integrated basic application circuit

Published:2011/6/9 22:23:00 Author:qqtang | Keyword: potentiometer drive, basic application circuit

BA6104--the 5 bit LED potentiometer drive integrated basic application circuit
BA6104--the 5 bit LED potentiometer drive integrated basic application circuitAs the BA6104 input stage is in the PNP compound transistor basic pole input way, so its input impedance is very high. The output stage is emitter follower, so by adjusting the LED external resistor RL in the figure, the LED drive circuit can be changed. The external resistor, which is connected with 7-pin, can change Vref, when 7-pin is released, the Vref is controlled by IC, and its value is close to 1V. If the LED display LEV is required to be lower than 1v, we just link a resistor RD between 7-pin and the ground, then the Vref is reduced, see as the figure.   (View)

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TA8170--the stereo decoding integrated circuit

Published:2011/6/9 22:36:00 Author:qqtang | Keyword: stereo decoding, integrated circuit

TA8170--the stereo decoding integrated circuit
TA8170 is the stereo decoding integrated circuit produced by Toshiba, which is widely used in low-voltage radio circuit as the demodulator of modulate stereo signals, such as walkman and car stereo, etc.1.function featuresTA8170 contains the voltage control oscillator, stereo sound decoing circuit, mixing signal pre-amplifier circuit, stereo/single channel shifting control circuit and other affiliated circuits.2. Pin functions and dataTA8170 is in 10-pin single line package, whose pin functions and data are listed in table 1.   (View)

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