Circuit Diagram

The 15V regulated power supply circuit of SCR

Published:2011/6/30 22:11:00 Author:qqtang | Keyword: regulated power supply

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The auto temperature control circuit

Published:2011/6/30 21:27:00 Author:qqtang | Keyword: temperature control

The figured circuit consists of the temperature control sensor switch, the temperature LED display circuit of upper and lower limit, SCR control circuit, analog sound circuit and AC step-down rectifier circuit, etc. The temperature circuit can do the auto control in the within the upper and lower temperature, the detecting precision is ±3℃, so the effect is ideal, and it can also indicate the over-temperature.   (View)

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The Volkswagon sunshade tent circuit

Published:2011/6/30 21:52:00 Author:qqtang | Keyword: Volkswagon, sunshade tent

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The 5V-+12V and -15V DC converter circuit

Published:2011/6/30 20:38:00 Author:qqtang | Keyword: DC converter

Figure: The 5V-+12V and -15V DC converter circuit   (View)

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The auto power regulation temperature controller circuit

Published:2011/6/30 20:43:00 Author:qqtang | Keyword: auto power regulation, temperature controller

The temperature controller can adjust the input power of the heater while the LED is indicating the temperature range, which makes the controlled heater in constant working temperature state. The circuit is shown in the figure.   (View)

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The Volkswagon gear shift interlock circuit

Published:2011/6/30 21:51:00 Author:qqtang | Keyword: Volkswagon, gear shift, interlock

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Photoelectric-Type Auto-Counting Device Circuit Diagram

Published:2011/6/23 8:49:00 Author:Vicky | Keyword: Photoelectric-Type Auto-Counting Device

The principle of photoelectric-type auto-counting device is shown in the picture. It is made of single chip microcomputer PIC16C57, which is applicable to industry automatic control of product line and of certain practical value.   (View)

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The 50w DC transformer circuit

Published:2011/6/30 20:44:00 Author:qqtang | Keyword: DC transformer

Figure:The 50w DC transformer circuit   (View)

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The auto sequence connecting power supply control ciruit

Published:2011/6/30 20:47:00 Author:qqtang | Keyword: sequence, power supply control

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The South-east Wagon central control and warning equipment system circuit

Published:2011/6/30 20:53:00 Author:qqtang | Keyword: central control, warning equipment system

The South-east Wagon central control and warning equipment system circuit is shown as above.   (View)

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The Volkswagon anti-burglar circuit

Published:2011/6/30 20:48:00 Author:qqtang | Keyword: Volkswagon, anti-burglar circuit

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The Guangzhou Honda charging system circuit

Published:2011/6/30 20:55:00 Author:qqtang | Keyword: Guangzhou Honda, charging system

The Guangzhou Honda charging system circuit is shown in the figure.   (View)

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The Volkswagon charging system circuit

Published:2011/6/30 20:50:00 Author:qqtang | Keyword: Volkswagon, charging system

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The auto control circuit of over-temperature detection

Published:2011/6/30 21:00:00 Author:qqtang | Keyword: control circuit, over-temperature detection

The circuit consists of a NAND circuit, a detection circuit composed of thermistor and a alarm sound generating circuit, and the relay is the executing circuit. Its structure is simple and it's low-cost. The circuit is shown in the figure.   (View)

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The randomly set standby power supply voltage circuit

Published:2011/6/30 21:03:00 Author:qqtang | Keyword: standby power supply, voltage circuit

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The Great Wall-Harvard central lock, airbag, ABS, instruments and lighting system circuit

Published:2011/6/30 21:09:00 Author:qqtang | Keyword: central lock, airbag, ABS, instruments, lighting system

The Great Wall-Harvard central lock, airbag, ABS, instruments and lighting system circuit is shown in the figure.   (View)

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Circuit Diagram of digital eight-way disconnection detector composed of monolithic 89C2051

Published:2011/6/23 8:44:00 Author:Vicky | Keyword: digital eight-way disconnection detector

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The Volkswagon cooling fan circuit

Published:2011/6/30 21:04:00 Author:qqtang | Keyword: Volkswagon, cooling fan

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FM/FSK 433MHz Emitter Circuit Diagram

Published:2011/6/19 7:03:00 Author:Vicky | Keyword: FM/FSK 433MHz Emitter Circuit

Circuit of TRF4400 application in 433 MHz IS TRF4400 is an multi-chanell low-cost emitter which can provide full functions. The can meet the requirement of 433MHz frequency band linear (FM) or application of digital(FSK) emitter. Main technical features are listed as follows: 　 ·Work frequency: 420～450 MHz; 　　·FM／FSK modulation mode； 　　·Small demand of exterior fittings； 　　·Work voltage: 2.2～3.6 V； 　　·Typical emitting power: 7 dBm； 　　·Maximum work current of emitter: 75 mA，low-power dissipation mode: 0.5μA； 　　·Flexible serial interface to be connected to T1 MSP430 microcontroller.   (View)

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MHz-KH Series Encoding Emitter Module Circuit Diagram

Published:2011/6/26 8:03:00 Author:Vicky | Keyword: MHz-KH Series Encoding Emitter Module

\TXE-433/418/315 MHz—KH series encoding emitter module TXE-433/418/315 MHz—KH series encoding emitter module , when used together with KH decoding receptor module, can form a highly-reliable wireless link, which send 1 to 8 parallel input states; the address coding is 310 groups; the transmitting distance is over 91.5 m(300 ft). The correspondent receptors are RXD-315-KH(315 MHz)、RXD-418-KH(418 MHz)和RXD-433-KH(433 MHz). KH series radio frequency encoding emitter is available in remote control system , keyless entering system, garage gate control, lightening control system etc. Main technical features are listed below: 　 ·No need of other exterior radio frequency component except antenna; 　　·Maximum output power: +4 dBm; 　　·Emitting data length: 26 bytes×3 　　·Work voltage: 2.7～5.2 V; ·Work current: l.5 mA，sleeping mode current: lμA。   (View)

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