Circuit Diagram

Analog temperature controller circuit diagram

Published:2011/4/28 22:22:00 Author:Ecco | Keyword: Analog, temperature controller

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Analog turning disc guessing award device circuit diagram

Published:2011/4/28 21:39:00 Author:Ecco | Keyword: Analog, turning disc , guessing award device

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Playing football game circuit diagram

Published:2011/4/28 22:18:00 Author:Ecco | Keyword: Playing football game

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Cursor control circuit

Published:2011/4/27 9:45:00 Author:Nicole | Keyword: cursor control circuit

This circuit uses software to control cursor, then the cursor can be writen at any place of display screen, it is not limited by the form of from above to below or from left to right. TVII system contains 8K bits BASIC and 32 usable ASCII control codes, but only 18 codes are used. Three 7445 BCD code changes into BCD decoder work as the way of 3 lines change into 8 lines, the (12) is used as chip start-up line. When the (12) is low level, there must be a output turning into low level.   (View)

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Acousto-optic control stair delay switch circuit with operational amplifier

Published:2011/4/28 4:33:00 Author:Nicole | Keyword: acousto-optic control, stair delay switch, operational amplifier

The figure is as shown, it is a acousto-optic control stair delay switch which adopts LM324 operational amplifier, it adopts two-wire system connection, it can replace the ordinary light switch directly, it is not needed to change the indoor original wiring. In figure, the operational amplifier A1~A4 which is connected into four voltage comparator can use a single power supply four operational amplifier IC LM324, theother components are as shown, there is no special requirements.   (View)

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Bibulous rate measuring circuit diagram

Published:2011/4/28 21:37:00 Author:Ecco | Keyword: Bibulous rate , measuring

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Tracking sun photoelectric servo circuit used in chromospheric telescope

Published:2011/4/28 21:01:00 Author:Nicole | Keyword: photoelectric servo, chromospheric telescope

This servo system is used to observe sun. The sunshine is projected onto a Φ50mm round image by optical lens, to fix a 3DU33 photosensitive transistor to the later light slit of AA' and BB', it requires the parameters of two tubes should be as nearly as possible, after 3DG6D differentail amplifier, it is modulated into AC 50Hz, then it is AC amplified. After phase-sensitive rectification, it will be changed into DC singal, it can avoid the zero drift of DC amplifier. The parameters of two 3DG6D also should be coincided, and they are put into the same copper cap. The photoelectric tracing precision of this circuit is 0.8arc-second, the electrical energy is provided by a 300W portable lamp transformer.   (View)

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The typical application circuit diagram of RY927 multi-segment LED driver linear display

Published:2011/4/28 21:12:00 Author:Ecco | Keyword: typical application , multi-segment, LED , driver , linear display

RY927 multi-segment LED driver linear display   (View)

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TDA8844 integrated block internal box circuit

Published:2011/4/28 7:34:00 Author:TaoXi | Keyword: integrated block, internal box circuit

The TDA7057AQ integrated block internal box circuit is as shown in figure 14-19, this IC is in the single 13-pin package, the pin functions and data is shown in table 34.   (View)

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20-bit LED dot / line conversion display circuit diagram composed of two LM3914

Published:2011/4/28 21:03:00 Author:Ecco | Keyword: 20-bit, LED, dot, line, conversion , display , two

20-bit LED dot / line conversion display circuit diagram composed of two LM3914   (View)

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VU meter circuit diagram composed of M3916

Published:2011/4/28 20:49:00 Author:Ecco | Keyword: VU meter

VU meter circuit diagram composed of M3916   (View)

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Toilet automatic lighting switch circuit composed of CD4022

Published:2011/4/24 1:20:00 Author:May | Keyword: Toilet automatic lighting switch

The diagram is Toilet automatic lighting switch which uses gate control type, when someone enter, the door open once, lighting switch breakover, the lamp is lightening. When someone go out the door and open it again, switch cut off and go out. The circuit network is shown in the diagram. The circuit consists of Hall switch, octal count, pulse distributor CD4022 and bidirectional thyristorVTH.   (View)

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Single frequency sound and light source circuit diagram composed of SGZ07 sound and light alarm IC

Published:2011/4/28 20:33:00 Author:Ecco | Keyword: Single frequency , sound , light, source , alarm IC

Single frequency sound and light source circuit diagram composed of SGZ07. The characteristics between C1 and the output signal :   (View)

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ZKB8711 controlled alarm IC for constant temperature automatic control alarm circuit diagram

Published:2011/4/28 20:29:00 Author:Ecco | Keyword: controlled , alarm , IC , constant temperature , automatic control , alarm

ZKB8711 controlled alarm IC for constant temperature automatic control alarm circuit. ZKB8711 can be used for temperature control, light control, humidity control, rain and harmful gas detection and alarm control and so on, it has the advantages of several functions, few external components, easy making and so on.   (View)

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2450MHz final level high power linear amplifier circuit composed of RF2126

Published:2011/4/23 2:22:00 Author:May | Keyword: 2450MHz, final level, high power, linear amplifier

The picture is 2450MHz final level high power linear amplifier circuit composed of RF2126. Radio-frequency signal (RF) inputs by pin 1, and enlarge by power amplifier then output by pin 7 ( 5, 6, 8) . Pin 1 direct coupling with inside amplifier, so add a blocking coupling capacitance out of it. capacity of blocking coupling capacitance is 1.8~2.0μF, input resistance of pin 1 is 50Ω. The capacitance and inductance in the picture is the typical value when frequency is 2450MHz.   (View)

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Ultrasonic mosquito worm repellant circuit

Published:2011/4/23 1:56:00 Author:May | Keyword: Ultrasonic, mosquito worm repellant

Ultrasonic mosquito worm repellant circuit It is a very simple ultrasonic mosquito, worm, cockroach repellant circuit. The circuit is relaxation oscillator consits of CMOS 4047 single shot trigger. It can make its center frequency at about 22kHz by adjusting 4k7. Then it can output by bridge type power tube composed of four transistors. And it can push 3.25 inch Piezo to generate ultrasonic signal.   (View)

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Bridge isolated amplifier circuit

Published:2011/4/6 5:37:00 Author:may | Keyword: Bridge isolated amplifier

Bridge isolated amplifier circuitis shown in the following diagram:   (View)

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About alternating-current bridge Symmetric incentive circuit

Published:2011/4/2 4:12:00 Author:may | Keyword: alternating-current bridge, Symmetric incentive

About alternating-current bridge Symmetric incentive circuit is show in the following picture:   (View)

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TDA16846 integrated block internal box circuit

Published:2011/4/28 7:29:00 Author:TaoXi | Keyword: integrated block, internal box circuit

2.Pin functions and data The TDA7073A is in the 16-pin DIP package, the pin functions and data is shown in table 35, the data is measured from the Amoi VCD-768. Table 35 The pin functions and data of TDA7073A   (View)

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Chang antelope car central locking system circuit diagram

Published:2011/4/28 20:02:00 Author:Rebekka | Keyword: Chang antelope car, central locking system

1. Battery 2. The total fuse 3. Fuse 4. The the key / button switch of driver side 5. Front passenger key switch 6. The main switch 8. Car door lock controller 9. Lock actuator 10. Shut the timer 11. unlock timer 12. the key limit protection circuit Chang antelope car central locking system circuit diagram is shown as above.   (View)

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