EM78811-the integrated microcomputer circuit of communication single door

Published:2011/5/13 20:11:00 Author:Borg | Keyword: microcomputer, single door

EM78811 is an integrated microcomputer circuit of communication single door, which is widely used in all kinds of caller display phones.1.Function featuresEM78811 is a 4 bit CMOS micro computer which contains FSK decoder of BELL202 or ITV-TV23 standard, generators of dual-sound multiple frequency, battery low voltage detection circuit of 4-level potential plate, LCD display drive circuit and energy-saving control circuit, etc. 2. Pin functions and dataEM78811 is in 100-lead soft package which is packed on the LCD plate directly, whose pin functions and data are listed in Table 1-1.   (View)

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Strain gauge electronic scale amplifier circuit diagram

Published:2011/5/15 6:07:00 Author:Rebekka | Keyword: Strain gauge, electronic scale amplifier

Strain gauge electronic scale amplifier circuit diagram is shown as above.   (View)

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Bridge amplifier circuit diagram

Published:2011/5/15 6:08:00 Author:Rebekka | Keyword: Bridge amplifier

Bridge amplifier circuit diagram is shown as above.   (View)

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Light-emitting time automatic control circuit

Published:2011/5/15 5:08:00 Author:John

The intensity of the light-emitting time automatic control is relative to the signals of time. And this circuit can work under a very small illumination (such as 250mLX). Photodiode adopts FV1 / 4-type elements with an area of F ≈ 9mm2. The operating voltage of 2.7V can be powered in series by two batteries. When it is not connected, the absorbed current is 2μA. The differential amplifiers T1 and T2 both have a high sensitivity and the current of emitter is 1μA. Afterwards, the BCY58 continues to amplify.   (View)

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RS232-TTl-RS485 switching interface circuit

Published:2011/5/15 2:53:00 Author:John

RS232-TTl-RS485 switching interface circuit is given in the following.   (View)

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Mine-site indicating lights circuit

Published:2011/5/15 3:23:00 Author:John | Keyword: indicator

The lights installed in the mining sites are used to help drivers to notice the situation behind the car and to avoid accidents. Phototransistor is used as optical signal sensor. When the light shines on the photodiodes, the relay J picks up. A pair of normally opened contact closes. The green light starts to shine, indicating that there is no obstacle behind the car. If there is any obstacle blocking the light , the relay J does not picks up and the red light shines.   (View)

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CS8952 Ethernet network interface circuit

Published:2011/5/15 4:48:00 Author:John | Keyword: network interface

CS8952 Ethernet network interface circuit is shown below.   (View)

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E-fuse circuit

Published:2011/5/15 2:35:00 Author:John | Keyword: E-fuse

E-fuse circuit is shown below.   (View)

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BA5932F-the 4-channel servo-driven integrated circuit

Published:2011/5/13 4:02:00 Author:Borg | Keyword: 4-channel, servo-driven, integrated circuit

BA5913F is an integrated 4-channel servo-driven drive circuit, which is often used with the the BA6849FP integrated circuit that 3-phase spindle motors drive, and it is used in Toyo LU-1l100 DVD cores to drive focusing, tracking, feeding and loading motors. The BA5931F internal circuit is shown in Figure 1, which is in 28-lead package with cooling fins, and its pin functions and data are listed in Table 1 in which ⑧ and (28) are earth terminals and ⑥、⑦、⑨、⑩ and (11) are empty pins. Figure 1 The internal circuit BA5931F chips   (View)

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BA5902FP-laser head servo-driven integrated cicuit

Published:2011/5/13 3:13:00 Author:Borg | Keyword: laser head, servo-driven

BA6196FP is a motor-driven integrated circuit produced by Toyo Corp., which is used in laser heads to laser players.1.The internal circuitBA6196FP contains 4-channel BTL drive circuit and drive silence-noise control circuit, whose internal circuit is shown in Figure 1. Figure 1 the internal circuit of BA5902FP pin functions BA5902FP is in 28-lead dual in-line package, whose pin functions are listed in Table 1. Table 1 pin functions and data of BA5902FP chips   (View)

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In-phase gain circuit diagram composed of MAX4188／4189／4190

Published:2011/5/13 3:07:00 Author:Ecco | Keyword: In-phase gain

In-phase gain circuit diagram composed of MAX4188／4189／4190 is shown as the chart. The precision of resistor in the figure is selected 1%. VOUT=(1+RF／RG)VIN.   (View)

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Reversed-phase gain circuit diagram composed of MAX4188／4189／4190

Published:2011/5/13 3:09:00 Author:Ecco | Keyword: Reversed-phase gain

Reversed-phase gain circuit diagram composed of MAX4188／4189／4190 is shown as the chart. The precision of the resistor in the figure is selected 1%. VOUT =-(RF／RG)VIN.   (View)

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High confidentiality electronic lock circuits T630 and T631

Published:2011/5/12 7:05:00 Author:TaoXi | Keyword: High confidentiality, electronic lock

You can use the jump yard decoding circuit to form the high confidentiality electronic lock that can be used in the safety deposit box, the confidential file cabinet, the confidential room applications to ensure their safety. The high confidentiality electronic lock circuit which is composed of the jump yards decoding circuit (ACM1330E/ACM1550D) and the long-wave remote control transmitter / receiver circuit (T630/T631) is as shown in the figure. (a) is the coded excitation circuit; (b) is the receiving decoder circuit.   (View)

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Dual-Channel isolation unipolar photodiode amplifier circuit diagram composed of ISO100

Published:2011/5/12 22:08:00 Author:Ecco | Keyword: Dual-Channel, isolation , unipolar , photodiode , amplifier

  (View)

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Unipolar precision bridge isolation amplifier circuit diagram composed of ISO100

Published:2011/5/12 22:06:00 Author:Ecco | Keyword: Unipolar, precision , bridge , isolation, amplifier

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BA628N-the dual-control integrated circuit of motor drive

Published:2011/5/12 21:59:00 Author:Borg

BA628 is a-dual control integrated circuit of motor drive produced by Toyo Corp., which is widely used in CD and VCD players as motor drives.1.the internal circuit BA6287N contains logic control circuit and drive circuit, whose internal circuit is as shown in Figure 1. 2.pin functionsBA6287N is in 8-lead dual flat package, whose pin functions are listed in Table 1. Notes: the logical relationship of BA6287N is listed in Table 1, by which we can judge if IC is malfunctioning   (View)

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GD9815-5-the integrated microcomputer circuit of communication single door

Published:2011/5/12 21:57:00 Author:Borg | Keyword: integrated microcomputer, communication single door

GD9815-5 is an integrated microcomputer circuit of communication single door, which is widely used in caller display phones, such as Zhongtianxin and Wondlay.1.Function features GD9815-5 contains FSK decoding circuits of caller display, while linking with two crystal oscillators from outside:one of them is 3.58MHz, and another is 32768Hz. When it is off-hook, the 32768Hz oscillator keeps the clock circuit and LED display working, by which the energy is saved.pin functions and data2. GD9815-5 is in 100-pin package of chip type.   (View)

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μA715 dual power broadband high-speed single op amp circuit diagram

Published:2011/5/12 2:21:00 Author:Rebekka | Keyword: High-speed single op amp, dual power broadband

μA715 uses positive and negative dual power supply. Its conversion rate is 10 times faster than general-purpose op amps. The characteristics of μA715 is that its bandwidth is up to 6.5MHz. It is mainly used for video amplification, RF amplifier, signal generator, pulse amplification and data acquisition systems. The similar substitutions or directly models of it are CF715MT, CF715CT, CF715MD, CF715CD, CF715MJ. CF715CJ, CF715CP, F715, SG715, F053, F054, F055 and so on. The typical application circuit is shown as above.   (View)

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μA709 dual power universal single op amp circuit diagram

Published:2011/5/12 4:03:00 Author:Rebekka | Keyword: dual power universal single op amp

μA709 is a high gain operational amplifier with the features of high input impedance, low offset voltage, peripheral frequency compensation. It is mainly used for the DC servo system, high-impedance analog voltage comparator, low instrument amplifier and so on. The similar Direct substitution models are: CFT09MT, CF? 09CT, CF709MD, CF709CD, CF709MJ, CF709CJ, CF709CP, F003, F005, CF709 and so on. μA709 typical application circuit is shown as above.   (View)

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FR9600-the Microcomputer Intergrated Circuit of Communication Single Doors

Published:2011/5/12 19:58:00 Author:Borg | Keyword: Microcomputer, Intergrated Circuit, Communication Single Doors

FR96   (View)

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