常用元器件的识别.docx
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常用元器件的识别.docx
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常用元器件的识别
REF01
Precision10Vvoltagereference.
+---+--+---+
|1 +--+ 8|
VCC|2 7|
|3 REF016|OUT
GND|4 5|TRIM
+----------+
REF02,REF05
Precision5Vvoltagereference.
+---+--+---+
|1 +--+ 8|
VCC|2 7|
TEMP|3 REF026|OUT
GND|4 5|TRIM
+----------+
REF03
Precision2.5Vvoltagereference.
+---+--+---+
|1 +--+ 8|
VCC|2 7|
TEMP|3 REF036|OUT
GND|4 5|TRIM
+----------+
REF08
Precision-10/-10.24Vvoltagereference.
LeavingSELopenwillproduce-10V,groundingit-10.24Voutput.
+---+--+---+
OUT|1 +--+ 8|TRIM
|2 7|VEE
|3 REF086|
SEL|4 5|GND
+----------+
REF10
Precision10Vvoltagereference.
+---+--+---+
|1 +--+ 8|
VCC|2 7|
|3 REF016|OUT
GND|4 5|TRIM
+----------+
LM34
Voltagemodetemperaturesensor.
AvailableinFahrenheitorCelsiusmodelsandmultipletemperaturesenseranges.Outputis10mv/degreeregardlessofVCC(+5to+30V).
TO92
+---+
|##|
+++++ 1:
VCC
||| 2:
Vout
||| 3:
GND
123
REF43
Precision2.5Vvoltagereference.
+---+--+---+
|1 +--+ 8|
VCC|2 7|
TEMP|3 REF036|OUT
GND|4 5|TRIM
+----------+
LM334
Currentmodetemperaturesensor.
TO92
+---+
|##|
+++++ 1:
Iin
||| 2:
Rset
||| 3:
GND
123
339,LM339
Quadcomparator.
+---+--+---+
1OUT|1 +--+14|3OUT
2OUT|2 13|4OUT
VCC|3 12|GND
-2In|4LM33911|+4In
+2In|5 10|-4In
-1In|6 9|+3In
+1In|7 8|-3In
+----------+
386,LM386
500mWaudioamplifier.
+---+--+---+
GAIN|1 +--+ 8|GAIN
-In|2 7|BYP
+In|3LM386 6|VCC
GND|4 5|OUT
+----------+
555
Universaltimer.
WhenCVisnotconnecteditisheldat2/3.VCCthrougha5k/10kdivider(largervaluesonthe7555).
+---+--+---+ +------+--------+------*---+-----+
GND|1 +--+ 8|VCC |/RST| /TR |Thr |Q|Dis|
/TR|2 7|Dis +======+========+======*===+=====+
Q|3 555 6|Thr | 0 | X | X |0| 0 |
/RST|4 5|CV | 1 | +----------+ | 1 |>CV/2| | 1 |>CV/2|>CV|0| 0 | +------+--------+------*---+-----+ 556 Dual555universaltimers. When1CVor2CVarenotconnectedtheyareheldat2/3.VCCthrougha5k/10kdivider. +---+--+---+ +------+--------+------*---+-----+ 1Dis|1 +--+14|VCC |/RST| /TR |Thr |Q|Dis| 1Thr|2 13|2Dis +======+========+======*===+=====+ 1CV|3 12|2Thr | 0 | X | X |0| 0 | /1RST|4 556 11|2CV | 1 | 1Q|5 10|/2RST | 1 |>CV/2| /1TR|6 9|2Q | 1 |>CV/2|>CV|0| 0 | GND|7 8|/2TR +------+--------+------*---+-----+ +----------+ 558 Quadmonostabletimers. +---+--+---+ 1Q|1 +--+16|4Q 1RCext|2 15|4RCext 1TR|3 14|4TR CV|4 13|/RST VCC|5 558 12|GND 2TR|6 11|3TR 2RCext|7 10|3RCext 2Q|8 9|3Q +----------+ 566 Voltagecontrolledoscillator. +---+--+---+ GND|1 +--+ 8|VCC |2 7|Cext TRout|3 566 6|RCext SQout|4 5|MOD +----------+ 567,LM567 PLLfrequencydetector. +---+--+---+ OUTCext|1 +--+ 8|Q LPCext|2 7|GND IN|3 567 6|RCext VCC|4 5|Rext +----------+ 3909 LEDflasherandoscillator. +---+--+---+ RCf|1 +--+ 8|RCs OUT|2 7| |3 3909 6|RL GND|4 5|VCC +----------+ 3914,3915 LEDdotandbargraphdriverswithopen-collectoroutputs. The3914hasalineardisplay,the3915alogarithmicone.ConnecttheMODEpintoVCCforbargraph,ortoQ9forasingledot. +---+--+---+ Q1|1 +--+18|Q2 GND|2 17|Q3 VCC|3 16|Q4 Rlo|4 15|Q5 IN|5 391414|Q6 Rhi|6 391513|Q7 REF|7 12|Q8 ADJ|8 11|Q9 MODE|9 10|Q10 +----------+ 4016 Quadanalogswitches. +---+--+---+ 1X|1 +--+14|VCC 1Y|2 13|1EN 2Y|3 12|4EN 2X|4 401611|4X 2EN|5 406610|4Y 3EN|6 9|3Y GND|7 8|3X +----------+ 4066 Quadanalogswitches. +---+--+---+ 1X|1 +--+14|VCC 1Y|2 13|1EN 2Y|3 12|4EN 2X|4 401611|4X 2EN|5 406610|4Y 3EN|6 9|3Y GND|7 8|3X +----------+ 4067 16-to-1lineanalogmultiplexer/demultiplexer. +-----+--+-----+ Y|1 +--+ 24|VCC X7|2 23|X8 X6|3 22|X9 X5|4 21|X10 X4|5 20|X11 X3|6 19|X12 X2|7 4067 18|X13 X1|8 17|X14 X0|9 16|X15 S0|10 15|/EN S1|11 14|S2 GND|12 13|S3 +--------------+ 4097 16-to-2lineanalogmultiplexer/demultiplexer. +-----+--+-----+ 1Y|1 +--+ 24|VCC 1X7|2 23|2X0 1X6|3 22|2X1 1X5|4 21|2X2 1X4|5 20|2X3 1X3|6 19|2X4 1X2|7 4097 18|2X5 1X1|8 17|2Y 1X0|9 16|2X6 S0|10 15|2X7 S1|11 14|S2 GND|12 13|/EN +--------------+ 4316 Quadanalogswitcheswithenableinputanddualpowersupply. VEEsupplymaynotbemorepositivethanGND. +---+--+---+ 1X|1 +--+16|VCC 1Y|2 15|1EN 2Y|3 14|4EN 2X|4 13|4X 2EN|5 431612|4Y 3EN|6 11|3Y EN|7 10|3X GND|8 9|VEE +----------+ 4351 8-to-1lineanalogmultiplexer/demultiplexerwithaddresslatchanddualpowersupply. VEEsupplymaynotbemorepositivethanGND. +---+--+---+ 1X0|1 +--+18|VCC 1X1|2 17|X2 2X1|3 16|X1 2Y|4 15|X0 2X0|5 435114|X3 /EN|6 13|S0 EN|7 12|S1 VEE|8 11|S2 GND|9 10|LE +----------+ 4352 8-to-2lineanalogmultiplexer/demultiplexerwithaddresslatchanddualpowersupply. VEEsupplymaynotbemorepositivethanGND. +---+--+---+ 1X0|1 +--+18|VCC 1X2|2 17|2X2 1Y|3 16|2X1 1X3|4 15|2Y 1X1|5 435214|2X0 /EN|6 13|2X3 EN|7 12|S0 VEE|8 11|S1 GND|9 10|LE +----------+ 4353 Triple2-to-1lineanalogmultiplexer/demultiplexerwithaddresslatchanddualpowersupply. VEEsupplymaynotbemorepositivethanGND. +---+--+---+ 1X0|1 +--+18|VCC 1X1|2 17|1Y 2X1|3 16|3Y 2Y|4 15|3X1 2X0|5 435314|3X0 /EN|6 13|3S EN|7 12|1S VEE|8 11|2S GND|9 10|LE +----------+ TP5088 DTMFencoder(NatSemi). When/SNGLislow,onlytheupperorlowertone(selectedbyGRP)isgiven.OUTisopenemitter,connectloadtoGND. +---+--+---+ VCC|1 +--+14|OUT LE|2 13| /SNGL|3 12|D3 GRP|4 508811|D2 GND|5 10|D1 X1|6 9|D0 X0|7 8|MUTE +----------+ 5555 Programmabledelaytimerwithoscillator. +---+--+---+ X1|1 +--+16|VCC X0|2 15|RST X2|3 14|OSCCON A|4 13|S3 /B|5 555512|S2 RTR//RTR|6 11|S1 /Q|7 10|S0 GND|8 9|Q +----------+ 7555 Universaltimer. WhenCVisnotconnecteditisheldat2/3.VCCthrougha5k/10kdivider(largervaluesonthe7555). +---+--+---+ +------+--------+------*---+-----+ GND|1 +--+ 8|VCC |/RST| /TR |Thr |Q|Dis| /TR|2 7|Dis +======+========+======*===+=====+ Q|3 555 6|Thr | 0 | X | X |0| 0 | /RST|4 5|CV | 1 | +----------+ | 1 |>CV/2| | 1 |>CV/2|>CV|0| 0 | +------+--------+------*---+-----+ TC35305 DTMFdecoder. DVgoeshighwhenatoneisdetectedonIN(-32..-2dB).XENisoscillatorenable(pullhigh,andconnectaXtal//1MresistortoX0andX1).IfXENislow,ATBcanbeusedtoconnectmultiplechipstogether.GTdeterminestheguardtime,0=short1=long. +---+--+---+ D1|1 +--+14|D2 D0|2 13|D3 OE|3 12|DV VCC|4 MC1411|ATB GT|5 543610|X1 XEN|6 9|X0 IN|7 8|GND +----------+ MC145436 DTMFdecoder. DVgoeshighwhenatoneisdetectedonIN(-32..-2dB).XENisoscillatorenable(pullhigh,andconnectaXtal//1MresistortoX0andX1).IfXENislow,ATBcanbeusedtoconnectmultiplechipstogether.GTdeterminestheguardtime,0=short1=long. +---+--+---+ D1|1 +--+14|D2 D0|2 13|D3 OE|3 12|DV VCC|4 MC1411|ATB GT|5 543610|X1 XEN|6 9|X0 IN|7 8|GND +----------+ 常用元器件的识别 一、电阻 电阻在电路中用“R”加数字表示,如: R1表示编号为1的电阻。 电阻在电路中的主要作用为 分流、限流、分压、偏置等。 1、参数识别: 电阻的单位为欧姆(Ω),倍率单位有: 千欧(KΩ),兆欧(MΩ)等。 换算 方法是: 1兆欧=1000千欧=1000000欧 电阻的参数标注方法有3种,即直标法、色标法和数标法。 a、数标法主要用于贴片等小体积的电路,如: 472表示47×100Ω(即4.7K);104则表示100K b、色环标注法使用最多,现举例如下: 四色环电阻五色环电阻(精密电阻) 2、电阻的色标位置和倍率关系如下表所示: 颜色有效数字倍率允许偏差(%) 银色/x0.01±10 金色/x0.1±5 黑色0+0/ 棕色1x10±1 红色2x100±2 橙色3x1000/ 黄色4x10000/ 绿色5x100000±0.5 蓝色6x1000000±0.2 紫色7x10000000±0.1 灰色8x100000000/ 白色9x1000000000/ 二、电容 1、电容在电路中一般用“C”加数字表示(如C13表示编号为13的电容)。
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