Circuit Diagram

Dodge heater system circuit

Published:2011/6/8 20:08:00 Author:chopper | Keyword: Dodge, heater system

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crystal diode DMV1500HFD5 internal circuit

Published:2011/6/8 20:09:00 Author:chopper | Keyword: crystal diode, internal

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counter circuit

Published:2011/6/8 20:51:00 Author:chopper | Keyword: counter

Measuring phase angle adopts hardware counting mode instead of singlechip direct counting mode.Because hardware counting mode can improve the precision.We make 256 scale successive carry counting mode by using two pieces of 74HC161 in series.The external frequency reference selects a high-speed pulse generated by 10MHz active crystal oscillator to count the width of signal Fi output by phase-locked loop.Therefore,it can make the measuring absolute error of transadmittance angle less than 5% of theoretic calculation.The principle of circuit is as follows.   (View)

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The principle circuit of classical Motorola L7 cellphone (7/7)

Published:2011/6/3 7:12:00 Author:Seven | Keyword: principle circuit, Motorola

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The thermocouple data collecting circuit

Published:2011/6/3 1:39:00 Author:Seven | Keyword: thermocouple, data collecting circuit

Figure 1-1 the thermocouple light-separation temperature testerIn the figure, the working temperature of the J thermocouple ranges from 0℃ to 500℃. The light-separation circuit is used in the temperature control instrument. LT1025A is a low-power thermocouple cool pole compensator. Lt1019-2.5 is a precision reference voltage source.Notes: products of LTC and LT series are shown in the pamphlets of LINEAR Corp..   (View)

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crystal diode DMV1500HFD internal circuit

Published:2011/6/8 20:11:00 Author:chopper | Keyword: crystal diode, internal

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1A transistor drived by photoelectric diode circuit

Published:2011/6/8 20:59:00 Author:chopper | Keyword: 1A, transistor, photoelectric diode

Any normal optoelectronic isolator have enough output to satisfy the input current requirement of 1A power transistor.When the driving signal is not available,R1 absorbs base current of Q1 and makes it close.When the power source is through LED D1,the current less than 20 μA generated by photoelectric diode D2 can make LM195 connected.Supply voltage can reach 42V.   (View)

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TDA1302T--the integrated circuit of RF signal preset amplifiers

Published:2011/6/5 5:42:00 Author:qqtang | Keyword: integrated circuit, RF signal

TDA1302T is an integrated circuit of RF signal preset amplifiers produced by Philips, which is widely used in all kinds of local and imported disc players.1.pin functions and dataTDA1302T is in 24-pin dual in-line package, whose pin functions and data are listed in Table 1.Table 1. pin functions and data of TDA1302T 2.typical applications circuitThe typical application circuit of RF amplifier, which consists of TDA1302T, is shown in Figure 1.Figure 1. The typical applications circuit of TDA1302T   (View)

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The stereo driver

Published:2011/6/3 6:54:00 Author:Seven | Keyword: stereo driver

This preamplifier has a low output impedance, and is designed to drive long cables, allowing you to listen to a remote music source without having to buy expensive screened cables. The very low output impedance of around 16 ohms at 1KHz, makes it possible to use ordinary bell wire,loudspeaker or alarm cable for connection. The preamplifier must be placed near the remote music source, for example a CD player. The cable is then run to a remote location where you want to listen. The output of this preamp has a gain of slightly less than one, so an external amplifier must be used to drive loudspeakers.   (View)

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TDA1301T--the servo processing integrated circuit

Published:2011/6/5 5:32:00 Author:qqtang | Keyword: servo processing, integrated circuit

TDA1301T is the servo processing integrated circuit produced by Philips, which is widely used in all brands of disc players, such as Malata and Shinco, etc.1.function featuresTDA1301T includes tracking servo, focus servo, feed servo control circuit, laser diode cutting control circuit, serial clock and data signal processing circuit, off-route detection circuit, reset circuit and other additional function circuits.2.pin functions and dataTDA1301T is in 28-pin dual in-line package.   (View)

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The DC converter circuit of wide band thermocouples

Published:2011/6/3 6:52:00 Author:Seven | Keyword: DC converter circuit

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ST6367B1 FEJ --the single chip microcomputer integrated circuit

Published:2011/6/5 8:51:00 Author:qqtang | Keyword: single chip microcomputer, integrated circuit

ST6367B1 FEJ is a single chip microcomputer integrated circuit, which is widely used in Konka large screen digital color TV.1.function featuresST6367B1 FEJ includes CPU, reset control circuit, clock oscillating clock, key order signal decoding circuit, I2C general control circuit, screen display circuit, remote signal process circuit, PAL/NTSC control circuit, and other control and additional circuits, whose internal circuit with pin functions and signal flow are shown in the figure.   (View)

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The Samsung T500/T508 cellphone repairing physical diagram (2)

Published:2011/6/3 7:35:00 Author:Seven | Keyword: Samsung, physical diagram

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SN103832APG--the multi-function electric switch integrated circuit

Published:2011/6/5 9:31:00 Author:qqtang | Keyword: electric switch, integrated circuit

SN103832APG is a massive multi-function electric switch integrated circuit, which is widely used in Panasonic high class large screen cores of M17V, M18M(with PIP function) and M19(with PIP function).1.function introduction SN103832APG includes shift switch, I2C general connector, audio shift switch, power supply circuit and other additional function circuit. Its internal circuit is shown in the following picture.2.pin functions and dataSN103832APG is in 64-pin flat square package, whose pin functions and data are listed in the table.   (View)

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The oxygen inhaler circuit

Published:2011/6/3 8:46:00 Author:Seven | Keyword: oxygen inhaler

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MAX038 inside casing circuit

Published:2011/6/8 8:02:00 Author:chopper | Keyword: inside casing

Frequency in every frequency band is controlled by RP1 and RP2.RP1 is coarse adjustable potentiometer.The charge current of oscillating capacitor CF is changed by altering the value of RP1 in order tochange the frequency.RP2 is fine tuning potentiometer,and it changes output frequency by changing the value of UFADJ.The variation range of RP2 is not great,and it is usedas a vernier regulation.The dutyfactor of every waveform is fixed as 50% so that can simplify the circuit.This has been able to satisfy many occasions.   (View)

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Transistor Online Detector Circuit Diagram

Published:2011/6/9 4:07:00 Author:Vicky | Keyword: Transistor Online Detector

Transistor online detector can test whether the transistor is good or bad without disassembling the transistor. Its working principle is as shown in the picture. This detector can not only be used to test the transistor independently, but also test the transistor online; not only test the PNP-type transistor, but also NPN-type transistor. It is of a relatively high practical value.   (View)

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SMR62000A--the integrated circuit of switch power supply thick film

Published:2011/6/5 9:40:00 Author:qqtang | Keyword: integrated circuit, switch power supply

SMR62000A is an integrated circuit of switch power supply thick film produced by SAMSUNG, which is widely used in large screen color TV sets, computer screen and disc player switch power supplies, such as Haier large screen color TV, etc.1.pin functions and dataSMR62000A is in single line pin package, whose pin functions and data are listed in the table.Pin functions and data of SMR62000A 2.typical application circuitThe typical application circuit of SMR62000A is listed in the figure. The typical application of SMR62000A   (View)

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BZN-5 electronic fly trap circuit

Published:2011/6/8 7:51:00 Author:chopper | Keyword: electronic, fly trap

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max038 function signal generator circuit

Published:2011/6/8 7:50:00 Author:chopper | Keyword: function, signal generator

US Company Maxim develops a new function signal generator ICMAX038,which is of high-frequency,pretty-precision,and thus it is known as high frequency precise function signl generator IC.MAX038 can be the optimized module to the circuit of phase-locked loop,voltage controlled oscillator,frequency synthesizer,pulse width modulator and so on.Its inner cirucit is shown as following picture 1.   (View)

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