Audio Circuit

TEANA A33-EL Taillight Circuit One

Published:2011/7/14 8:47:00 Author:Joyce | Keyword: TEANA , Taillight

TEANA A33-EL Taillight Circuit   (View)

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TEANA A33-EL Taillight Circuit Two

Published:2011/7/14 8:49:00 Author:Joyce | Keyword: TEANA , Taillight

TEANA A33-EL Taillight Circuit   (View)

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TEANA A33-EL Headlamp Light Control Circuit One

Published:2011/7/14 8:52:00 Author:Joyce | Keyword: TEANA , Headlamp , Light Control

TEANA A33-EL Headlamp Light Control Circuit   (View)

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TEANA A33-EL Headlamp Light Control Circuit Two

Published:2011/7/14 8:53:00 Author:Joyce | Keyword: TEANA, Headlamp , Light Control

TEANA A33-EL Headlamp Light Control Circuit   (View)

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TEANA A33-EL Headlamp Light Control Circuit Three

Published:2011/7/14 8:55:00 Author:Joyce | Keyword: TEANA, Headlamp , Light Control

TEANA A33-EL Headlamp Light Control Circuit   (View)

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TEANA A33-EL Charging System Circuit

Published:2011/7/14 8:59:00 Author:Joyce | Keyword: TEANA , Charging System

TEANA A33-EL Charging System Circuit   (View)

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TEANA A33-EL Starting System Circuit

Published:2011/7/14 9:00:00 Author:Joyce | Keyword: TEANA , Starting System

TEANA A33-EL Starting System Circuit   (View)

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TEANA A33-EL Loudspeaker Circuit

Published:2011/7/14 9:01:00 Author:Joyce | Keyword: TEANA , Loudspeaker

TEANA A33-EL Loudspeaker Circuit   (View)

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KA9270--the dual channel audio filter integrated circuit

Published:2011/7/12 2:43:00 Author:Borg | Keyword: dual channel, audio filter, integrated circuit

1. The internal circuit and pin functions of KA9270 KA9270 contains the impedance buffer, low-pass filter, de-weight control motor, basic pole voltage circuit, whose internal circuit is shown in figure 1-1. The IC is in 20-pin dual line structure, which has two forms marked with suffix letters, the one without suffix is dual in-line package, and the other one with D suffix is flat dual line package, the pin functions of them are the same, see as table 1-1.Figure 1-1 the internal circuit of KA9270/D   (View)

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CX20107--the single chip record/playback integrated circuit

Published:2011/7/12 1:21:00 Author:Borg | Keyword: single chip, record/playback

CX20107 is a single chip record/playback integrated circuit produced by Sony, which is used in portable radios, portable recorders and other ultra-small stereo circuits. 1.the internal circuit and pin functions of CX20107 CX20107 contains the single channel recording preset, recoding drive, single channel playback preset, auto power amplifier and system control circuit, whose internal circuit is shown in figure 1. This IC is in 24-pin dual flat package, whose pin functions and data are in Table 1. Figure 1. the internal circuit of CX20107   (View)

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KA22427--the AM tuning/FM INTREQ radio integrated circuit

Published:2011/7/12 2:32:00 Author:Borg | Keyword: INTREQ, radio, integrated circuit

1.the internal circuit and pin functions of KA22427 The AM part of KA22427 includes all the circuit between AM aerial input and detection output; the FM part doesn't include the high frequency amplifier and mix, but only includes the circuit between FM intermediate frequency and discrimination output. Besides, the integrated circuit also contains the power amplifier circuit. Therefore, only one more FM high frequency head can make KA22427 a whole FM/AM radio.The internal circuit of KA22427 is shown in figure 1-1, and this IC is in the 16-pin dual in-line package.   (View)

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KA22234-the double 5-stage balance power integrated circuit

Published:2011/7/12 3:46:00 Author:Borg | Keyword: 5-stage, balance power, integrated circuit

KA22234 is a double 5-stage balance power integrated circuit produced by Samsung, Korea, which is widely used in all types of stereo equipment to regulate the tone quality of the 2-lines of stereo signals.KA22234 contains 2 lines of 5-stage balance power integrated control circuits with the same functions, it is in 24-pin dual in-line plastic structure package, and its pin functions and data are listed in table 1-1. Table 1-1 the pin functions and data of KA22234   (View)

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KA22135-the single chip stereo playback integrated circuit

Published:2011/7/12 2:20:00 Author:Borg | Keyword: single chip, stereo playback, integrated circuit

KA22135 is a single chip stereo playback integrated circuit produced by Samsung, which is used in all kinds of ultra-small radios and recorders. 1.the internal circuit and pin functions of KA22135 KA22135 contains two lines of preset amplifier circuit, power amplifier circuit and motor speed control circuit of the same function. The internal circuit and typical application circuit is shown in figure 1-1. The IC is in the flat 22-pin dual line package, and its pin functions and data are listed in table 1-1.   (View)

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Walkman charger circuit

Published:2011/7/13 21:35:00 Author:TaoXi | Keyword: Walkman, charger

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AM Monolithic Radio Circuit

Published:2011/7/9 2:43:00 Author:Joyce | Keyword: AM , Monolithic, Radio

As shown in the circuit is a KA22421／22421D AM monolithic radio circuit.   (View)

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CIC38 Series Music Integrated Circuit

Published:2011/7/8 9:08:00 Author:Joyce | Keyword: CIC38 Series, Music , Integrated

CIC38 series music integrated circuit can directly drive the piezoelectric ceramics buzzer, as shown in figure (a). When the power supply voltage VDD is 3V, it can promote the piezoelectric ceramic buzzer and the light-emitting diodes at the same time, the application circuit is as shown in figure (b). If you want to get a larger volume, you can connect an amplifier transistor V T1 (9013 or 8050) externally to drive the horn, the specific circuit is as shown in figure(c). Names of songs stored in the CIC38 series integrated circuit:   (View)

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FM／AM Monolithic Radio Circuit

Published:2011/7/9 2:47:00 Author:Joyce | Keyword: FM／AM, Monolithic , Radio

As shown in the figure is a TA7781P／7781F FM／AM monolithic radio circuit.   (View)

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Music Integrated Circuit

Published:2011/7/8 8:48:00 Author:Joyce | Keyword: Music , Integrated

CIC481 is a CMOS music integrated circuit with songs played by piano, organ and mandolin. It can be used in products like toys, clocks, doorbells, etc. Its typical application circuit is as shown in the figure.   (View)

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TDA2822,TDA2822M Double audio power amplifier integrated circuit

Published:2011/7/5 8:53:00 Author:chopper | Keyword: Double, audio power amplifie, integrated circuit

TDA2822 IC has a small quiescent current and cross-distortion characteristics,and it can be composed of dual-channel BTL circuit which is suitable for portable, miniature tape recorders, PC audio to be the power amplifier.1.The inner circuit and function of pins of TDA2822 integrated packageThere are two packages of integrated circuit: TDA2822 adopts 16-pin dual inline package structure, and TDA2822M adopts 8-pin package structure,their internal equivalent circuits are basical the same. The inner circuit of TDA2822 integrated package is shown as the picture(take TDA2822M for example)   (View)

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Single Output (Unbalanced output) Differential Amplifier Circuit

Published:2011/6/25 9:17:00 Author:Michel | Keyword: Single Output, Unbalanced output, Differential Amplifier Circuit

When Vo was taken out by point C of the Q1 and Q2,it is called single ended or single ended.Single ended is one time smaller than differential output.The common mode signal can not be suppressed when the signal ended outputs. because Vi1 and Vi2 increase meanwhile ,VC1 and VC2 reduce,what's more,Vo=VC2 but it is not zero(generating zero-point drift).But increasing RE resistance can increase negative back to suppress output and common-mode signals. Because when Vi1=Vi2 ,Ii1 and Ii2 increase at the same time,IE and VE increase,which makes Q1 and Q2 generate reverse feedback and Q1 and Q2 gain and loss reduce,that's to say Vo reduces.   (View)

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