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Index 1816

The digital display answering racer circuit

Published:2011/6/7 11:52:00 Author:qqtang | Keyword: digital display, answering racer

In the figure, the digital display answering racer adapts the digital pipe as the display, which can make players and audiences see the results, so the transparence is good.Working principles: digital display answering racer circuit is shown in the figure. CD4511 is main part of the digital display answering racer. This is a BCD-7 lock/decoder/drive circuit, whose 1, 2, 6 and 7 pins are the input terminal, and 9~15 pins are the display output terminals. 3-pin LT is the detection terminal, when it is 0 , the output is 1 . (View)

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The digit display patient alarm device circuit

Published:2011/6/7 21:09:00 Author:qqtang | Keyword: digit display, patient alarm device

The digit display patient alarm device circuit
The circuit is shown in the figure, which can fulfill the dual-way signal delivering between sickrooms and duty rooms. The key switches K0～K9 and LED D0~D9 are installed in the sickroom, and the digital pipe and buzzer are fixed in the duty room. The buzzer will be still if there is no call from the sickroom, and the digital pipe is OFF. When patients press the switch K2, the buzzer in the duty room is buzzing and the pipe is indicating 2 ; at the same time, the LED in the sickroom is glowing, which shows that the patient signal has been delivered to the duty room. (View)

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SC-MC-3--the microcomputer integrated circuit of electric music instrument single chip

Published:2011/6/7 21:20:00 Author:qqtang | Keyword: integrated circuit, electric music instrument

SC-MC-3--the microcomputer integrated circuit of electric music instrument single chip

1.function featuresSC-MC-3 contains the clock oscillator circuit, reset circuit, key scanning pulse generating circuit, key order signal encoding circuit, data signal input/output connector circuit, screen signal decoding and drive circuit, and other additional function circuit, etc.2.pin functionsSC-MC-3 is in 42-pin dual in-line plastic package, whose pin arrangement is shown in the figure, and the pin functions are listed in the table. The pin arrangement of SC-MC-3 The pin functions of SC-MC-3 (View)

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SBX1765-01--the integrated circuit of the thick film comb filter

Published:2011/6/7 21:37:00 Author:qqtang | Keyword: integrated circuit, thick film

SBX1765-01--the integrated circuit of the thick film comb filter

SBX1765-01 is an integrated circuit of the thick film comb filter produced by SONY, which is used in cores of Chanhong NC-3 large screen color TV .1.function featuresSBX1765-01 includes the A/D converter CXD1176Q, D/A converter CXD117Q, two 1H (NTSC) or 2H(PAL) time delay selectable wire CXK1202 and a digital dynamic comb filter CXCD2011. Its internal circuit is shown in the figure. 2. Pin functions and dataSBX1765-01 is in 30-pin thick film dual in-line package, whose pin functions and data are listed in the table. (View)

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SAA7345GP--the CD digital signal process integrated circuit

Published:2011/6/7 21:45:00 Author:qqtang | Keyword: digital signal process, integrated circuit

SAA7345GP--the CD digital signal process integrated circuit

SM7345GP is a CD digital signal process integrated circuit produced by Philips, which is widely used in all makes of disc players.1.function featuresSAA7345GP includes the reset circuit, clock oscillator circuit, motor control circuit, data connector circuit, read/write control circuit, DAC process circuit, RF signal process circuit and other control and additional circuit.2.pin functions and dataSAA7345GP is in 44-pin square package, whose pin functions and data are listed in the table. (View)

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SAA7185--the video encoding and D/A converter integrated circuit

Published:2011/6/7 21:56:00 Author:qqtang | Keyword: D/A converter, integrated circuit

SAA7185--the video encoding and D/A converter integrated circuit

SAA7185 is a mass CMOS video encoding and D/A converter integrated circuit produced by Philips, which is widely used in all kinds of local and imported VCD players.1.function featuresSAA7185 is used to switch digit YUV signal back into analog TV signals by D/A converters according to PAL and NTSC mode. Its internal circuit is shown in the figure.The internal circuit of SAA7185 　　2.pin functions and dataSAA7185 is in 68-pin square package, whose pin functions and data are listed in the table. (View)

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SAA4991--the scanning converter integrated circuit

Published:2011/6/7 22:06:00 Author:qqtang | Keyword: scanning converter, integrated circuit

SAA4991--the scanning converter integrated circuit

1.functions featuresSAA4991 includes the Y and UV signal process circuit, UV and Y storage circuit, vector process circuit, field Y and UV signal process circuit, test circuit, storage read-allowed control circuit, SNERT data clock signal process circuit and other additional circuit, whose internal circuit is shown in the figure. The internal circuit of SAA49912.pin functions and dataSAA4991 is in 84-pin square package, whose pin functions and data are listed in the table.Pin functions and data of SAA4991 (View)

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The inverter circuit diagram 1

Published:2011/6/3 2:16:00 Author:Lucas | Keyword: inverter

The inverter circuit diagram 1
The inverter circuit consists of non-steady-state multivibrator, bistable flip-flop and switch output circuit, the circuit is shown as the chart. Astable multivibrator circuit is composed of time-base integrated circuit IC1, voltage regulator integrated circuit IC2 , resistors R1, R2, potentiometers RP, diode VD1 and capacitors C1, C2. Bistable trigger circuit consists of transistors V1, V2, resistors R3 ~ R6, capacitors C3, C4 and diodes VD2, VD3. Switch output circuit consists of thyristors VT1, VT2 and transformer T. After the power switch S is turned on, one road of the +12 V voltage of battery GB can directly povide power supply for bistable trigger, the other road is stabilized as +6 V for the astable multivibrator circuit. (View)

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Electronic rodent repeller circuit diagram 3

Published:2011/6/3 2:15:00 Author:Lucas | Keyword: Electronic rodent repeller

The electronic rodent repeller circuit is composed of the astable multivibrator, emitter follower converter, voltage controlled oscillator (YC0), driver amplifier circuit and the piezoelectric ceramic speaker HA with super loudness, and the circuit is shown as the chart. Astable multivibrator integrated circuit is composed of the time-base integrated circuit IC1, resistors R1 ~ R3, capacitor C1 and so on. Emitter follower converter is composed of the transistor V and the bias components. Voltage-controlled oscillator (VCO) consists of the PLL IC IC2 and external RC components. Driver amplifier uses TWH68 special amplifier module (including power amplifier circuit and ferrite step-up transformer, etc.). R1 ~ R7 select 1/4W carbon film or metal film resistors resistors. (View)

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The interface circuit diagram between MSP430F413 and MFRC522

Published:2011/6/3 2:15:00 Author:Lucas | Keyword: interface

The interface circuit diagram between MSP430F413 and MFRC522
It sets theMSP430F413 as the example, and it uses I2C interfaces. The circuit is shown in Fig. Because the SCM MSP430F413 has no the port line with interface function being similar to I2C,it usesI / 0 simulation I2C timing sequence. (View)