MAX489/491 low power consumption RF transceiver circuit

Published:2011/5/26 1:15:00 Author:Christina | Keyword: low power consumption, RF transceiver

The MAX489/491 is designed as one kind of low power consumption RF transceiver that can be used in the RS-485 and RS-422 standard communications, it has the short-circuit current limiting function. The driver part's output port is in the high impedance state when it gets into the hot standby state, so it can prevent the overload of load; the receiver part's input port has the safety function to prevent the opening circuit, and it can undertake full-duplex communication. The MAX489/491 uses the conversion rate driver to minimize the electromagnetic interference, and it also has the inhibiting effect to the reflection which is caused by the not appropriate port-connection of the cables, so there is no error when it is transmitting the data in the high speed of 250Kb/s, the driver's highest changing rate can reach 2.5 Mb/s, so it can be used in the industrial automatic control data transmission application.   (View)

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A/D converter 5G14433 and the microprocessor general interface circuit

Published:2011/5/26 7:17:00 Author:Christina | Keyword: A/D, converter, microprocessor, general interface

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MT8803--the infrared remote controller integrated circuit

Published:2011/6/10 21:38:00 Author:qqtang | Keyword: infrared remote controller, integrated circuit

MT8803 is an infrared remote controller integrated circuit, which often forms the fan remote control system with the remote signal receiver circuit MR8181 and the fan single chip integrated circuit MH8822, such as the Great Wall fan and the like. MT8803 is in 16-pin dual line package, whose typical application circuit is shown in the figure, and its pin functions and data are listed in the figure. The typical application circuit of MT8803 The pin functions and data of MT8803   (View)

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MSP3410B--the multi-system sound process single chip integrated circuit

Published:2011/6/10 21:47:00 Author:qqtang | Keyword: multi-system sound process, single chip

1.function featuresMSP3410B contains the A/D converting circuit, D/A converting circuit, I2C general and I2C general connector circuit, S general connector circuit, sound demodulation circuit, NICAM decoding circuit, audio output shifting circuit and other additional function circuit. The internal circuit of MSP3410B is shown in the figure. The internal circuit of MSP3410B2.pin functions and dataMSP3410B is in 68-pin square package, whose pin functions and data are listed in the table.The pin functions and data of MSP3410B   (View)

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MR8181--the integrated circuit of the infrared remote signal receiver

Published:2011/6/10 21:57:00 Author:qqtang | Keyword: integrated circuit, infrared remote signal receiver

MR8181 is an integrated circuit of the infrared remote signal receiver, which is often used with the remote emitter integrated circuit MT8803, fan single chip microcomputer integrated circuit MH8822, and they form the fan remote control system, such as the Great Wall fan and the like.1.pin functions and dataMR8181 is in 8-pin single line package, whose pin functions and data are listed in table 2. The pin functions and data of MR8181 2.the typical application circuitThe typical application circuit of the remote signal receiver, which consists of MR8181, is shown in the figure of MH8822.   (View)

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MN1874876TSH--the single door microcomputer integrated circuit

Published:2011/6/10 22:22:00 Author:qqtang | Keyword: single door microcomputer, integrated circuit

1.function featuresMN1874876TSH consists of the clock oscillating circuit, CPU, reset circuit, key decoding circuit, screen display circuit, I2C general circuit and other affiliated function circuits.2.pin functions and dataMN1874876TSH is in 64-pin dual in-line package, whose internal circuit, pin functions and signal flow are shown in the figure, and the pin letter codes and data are listed in the table. The internal circuit, pin functions and signal flow of MN1874876TSH   (View)

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The spectral character circuit of light filter

Published:2011/6/10 21:26:00 Author:qqtang | Keyword: spectral character

The sensor consists of the shell, light filter, heat electric element PZT, FET pipe, resistor and diode,etc. The light filter is installed at the window, which forms a infrared window. The light filter is a multi-film interference filter of 6μm, this filter has a high reflection ratio on sunlight and daylight lamp light that the short wave is under 5μm, but it has a high penetration on the infrared ray source(10μm) which is emitted by human bodies and higher than 6μm, the spectral characters are as shown in figure 26-62.   (View)

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The construction circuit of heat-release electric infrared sensor

Published:2011/6/10 21:30:00 Author:qqtang | Keyword: construction circuit, infrared sensor

Figure: The construction circuit of heat-release electric infrared sensor   (View)

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DS14185 data interface driver/receiver combination circuit

Published:2011/5/25 21:15:00 Author:Christina | Keyword: data interface, driver, receiver, combination

The DS14185 is composed of three drivers and five receivers, it has the DC-DC converter and does not need the +12V power supply. The DS14185 has the noise filter inside, so there is no need to add the rate conversion filter capacitance. The DS14185 can be used in the applications of the data terminal equipment (DTE) and the data circuit terminal equipment (DCE). The drive input port and the receiver output port is compatible with the TTL or CMOS circuit. From the data terminal equipment (DTE)'s transmission interface to the data circuit terminal equipment (DCE)'s transmission interface, there are nine pins, among them there are two data lines and six control lines. The data lines are the TXD and RXD, and the control line are the RTS、DTR、DSRT、DCE、CTS、RI. The DS14185 supplies the DTE interface, the wiring method is as shown in the figure.   (View)

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Single chip microcomputer integrated circuit

Published:2011/6/8 1:45:00 Author:Christina | Keyword: Single chip, microcomputer, integrated circuit

The MNl52811TZX is designed as one kind of single chip microcomputer integrated circuit that is produced by the Panasonic corporation, and it can be used in the domestic and imported color TVs which use the Panasonic machine. 1.Features The MN152811TZX integrated circuit is composed of the central processing unit (CPU), the clock oscillating circuit, the reset control circuit, the key instruction decoder circuit, the I2C bus control circuit, the remote control command signal processing circuit, the screen display circuit, the standby/boot control circuit, the mode selection circuit, the single-frequency control circuit and other control and auxiliary function circuits. 2.Pin functions and data The MN152811TZX is in the 42-pin dual in-line package, the internal circuit block diagram and the signal flow are as shown in the figure, the pin-letter code and the data is as shown in the table. The internal circuit block diagram and the signal flow of the MN152811TZX The pin-letter code and the data of the MN152811TZX   (View)

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MN152810TZN single chip microcomputer integrated circuit

Published:2011/6/8 1:49:00 Author:Christina | Keyword: single chip, microcomputer, integrated circuit

The MN152810TZN is designed as one kind of single chip microcomputer integrated circuit that is produced by the Panasonic corporation, also it can be used in the large screen color TVs which are produced by the Panasonic corporation. The MN152810TZN integrated circuit is in the 52-pin double-row type package, the pin functions and data is as shown in the table. The pin functions and data of the MN152810TZN.   (View)

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MN15281OTTD4 single chip microcomputer integrated circuit

Published:2011/6/8 1:58:00 Author:Christina | Keyword: single chip, microcomputer, integrated circuit

The MN15281OTTD4 is designed as one kind of single chip microcomputer integrated circuit that is produced by the Panasonic corporation, also it can be used in the large screen color TVs which are produced by the Panasonic corporation. The MN15281OTTD4 integrated circuit is in the 52-pin double-row type package, the pin functions and data is as shown in the table. The pin functions and data of the MN15281OTTD4.   (View)

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the simple phone repairer

Published:2011/6/2 23:16:00 Author:Seven | Keyword: phone repairer

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The high quality stereo power amplifier circuit

Published:2011/6/3 0:06:00 Author:Seven | Keyword: high quality, stereo power amplifier

In Figure 19-22 is a simple circuit which consists of a TDA2310 dual preamplifier integrated circuit and a TDA2004 dual-audio power amplifier. The output power may reach 2*10W, and the supply voltage is 14.4V.   (View)

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the computer fan circuit

Published:2011/6/2 23:13:00 Author:Seven | Keyword: computer fan

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The completed power amplifier circuit--the Wilson tube amplifier(copy)

Published:2011/6/3 Author:Seven | Keyword: power amplifier, Wilson tube amplifier

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The hotplate circuit

Published:2011/6/2 23:01:00 Author:Seven | Keyword: hotplate circuit

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The phone security device circuit of photocouplers

Published:2011/6/3 0:17:00 Author:Seven | Keyword: security device, photocouplers

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The phone dialing circuit

Published:2011/6/2 23:56:00 Author:Seven | Keyword: dialing circuit

In Figure 11.3 is a key dialing circuit which is made of DF320. When the phone is picked up, the circuit is on. The NPN VT2 is conducting due to the input basic polarity of R2, and VT1 is also conducting, so the power supply charges C2 to 0.7V by R3 and VD1. When the LEV reaches the minimum working voltage of VDD, DF320 is linked to the power supply, and the circuit is reset by C1 and R8. The telephone net is linked to the circuit by VT1, and DF320 net, as an impedance, connects with the phone in the parallel way.   (View)

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BA3519F-the integrated reproducing circuit of single door stereo

Published:2011/5/14 22:17:00 Author:Borg | Keyword: integrated reproducing circuit, single door stereo

BA3519F is an integrated reproducing circuit of single door stereo produced by Toyo Corp., Japan, which is widely used in stereo monoplayers or portable radios.1.the internal circuit and pin functions of BA3519F BA3519F contains dual heads and dual amplifiers. In front of the dual heads, there are electronic switches converting the signals of two sides of cassettes, so the IC is often used in walk-man with the functions of auto reversing, such as Aiwa walk-man and so on.BA3519F is in flat 22-lead dual line package.   (View)

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