Ngwaọrụ Analog LT4322 Floating High VoltagNtuziaka onye njikwa ihe nrụzi arụ ọrụ

Ihe ngosi sekit 3117A na-egosipụta ihe na-ese n'elu mmiri, oke voltage arụ ọrụ rectifier njikwa LT4322, nke dabara maka ngwa chọrọ elu voltage line rectification na DC mmepụta ruo 170V. Ọ bụ ezie na ahọpụtara akụrụngwa iji kwalite arụmọrụ na 60Hz, LT4322 nwere ike ịrụ ọrụ ruo 100kHz.

LT4322 na-ebugharị MOSFET N-Channel ka ọ rụọ ọrụ mmezi ọkara nke ebili mmiri dị ka diode mana enwere ike dị ala. Topology a na-eme ka mgbochi okpomọkụ dị mfe ma na-abawanye mmepụta voltage. N-Channel topology nwere ọtụtụ uru karịa P-Channel topology, gụnyere RDS dị ala (ON), akara ukwu dị nta, ọnụ ala dị ala, yana nhọrọ MOSFET sara mbara.

Naanị ihe ole na ole dị mkpa ka achọrọ iji rụọ ọrụ LT4322 dị ka onye na-emegharị ebili mmiri nke ọkara: otu N-Channel MOSFET (M1), ihe nchekwa nchekwa (C1B), AC-smoothing capacitor (C2), capacitor ọnụ ụzọ (CG1). , na n'ime ngwa ebe ntinye elu-na-elu voltage gafere 60V, ọnọdụ nkwụsị nke N-Channel MOSFET (M2).

Nhazi files maka bọọdụ sekit a dị na: http://www.analog.com.

DC3117A FOTO BOARD nyocha

Ọgụgụ 1. DC3117A Foto Board Board

Nchịkọta arụmọrụ

Nkọwapụta dị na TA = 25°C, belụsọ na amataghị ya.

Tebụl 1. Nchịkọta arụmọrụ1

Oke	Nleba ọnọdụ/okwu	Min	Ụdị	Oke	Nkeji
Ntinye ACtage	Arụnyere Shorting Resistor R1 Enweghị Shorting Resistor R1	7		20	VAC(RMS)
Ntinye ACtage	Arụnyere Shorting Resistor R1 Enweghị Shorting Resistor R1	7	120	140	VAC(RMS)
Mmepụta Voltage	Arụnyere Shorting Resistor R1 Enweghị Shorting Resistor R1	9.5		60	V
Mmepụta Voltage	Arụnyere Shorting Resistor R1 Enweghị Shorting Resistor R1	9.5	170	200	V
Mmepụta ugbu a	Site na C2 arụnyere, ibu na-eguzogide Na mgbakwunye C2, ibu na-eguzogide	1.2			OGWU
Mmepụta ugbu a		5			OGWU

Emepụtara site na iji ngwa ndabara sitere na Ndepụta akụkụ.

Ngwa ịmalite usoro

Ịdọ aka ná ntị! Oke voltagỌ bụ naanị ndị ọrụ ruru eru kwesịrị ime ule e. Dịka nchekwa nchekwa, opekata mpe mmadụ abụọ kwesịrị ịnọ n'oge oke voltage ule. Enwere ndị nduzi ekpughere na ala nke bọọdụ ahụ, na plọg banana ọ bụla dị ga-esi na ala nke bọọdụ pụta. Elu dị n'okpuru kwesịrị ịbụ nke na-adịghị mma ma kpochapụ waya ọ bụla, ihe na-ere ahịa, na irighiri ihe ndị ọzọ.

Ngosipụta dị mfe nke ọrụ DC3117A bụ nke a:

Jikọọ ọkụ AC na ntinye na GND, dịka egosiri na Onyonyo 2. Gbaa mbọ hụ na mmepụta voltage nke ọkọnọ dị n'ime ntinye voltage nso nke DC3117A, dị ka egosiri na Tebụl 1. Nyochaa na ewepụla resistor shorting R1 tupu gafere 20VAC(RMS). Kpachara anya ka ị ghara ịgafe 24V ma ọ bụ 5A mgbe ị na-eji jakị gbọmgbọm (J5). Jiri turrets (E1 ruo E4) na jakị banana (J1 ruo J4) n'ime ihe niile dị ugbu a / vol.tage nso.
Onyonyo 2. Nhazi Ngwa Ngwa
Jikọọ ibu na voltmeter gafee mmepụta yana GND, dị ka egosiri na Onyonyo 2. Wetuo ibu ugbu a ka ọ bụrụ efu. Tinye voltmeter na ọnọdụ nha volt DC.

Welie ihe ntinye ọkụ AC voltage ruo n'ogo achọrọ. Lelee mmepụta voltage na voltmeter. Maka ikpe ebe ntinye ntinye bụ eriri 120VAC voltage, voltmeter na-agụ ~ 170VDC.
Welie ibu ugbu a na ọkwa achọrọ. Jide n'aka na ibu dị ugbu a dị n'ime oke ibu dị ugbu a, dị ka egosiri na Tebụl 1. Ihe arụnyere 150µF mmepụta smoothing capacitor (UCS2D151MHD C2) na-enye ọkwa ugbu a na-enye ohere ibu ruo 1.2ARMS na 25°C. Jikọọ C2 agbakwunyere ma ọ bụ họrọ capacitor nwere ọkwa dị ugbu a dị elu karịa UCS2D151MHD maka ibu buru ibu, ruo 5ARMS.

Nkọwa nke Board

GỤKWUOVIEW

DC3117A na-egosi otu LT4322 na-achịkwa MOSFET N-Channel iji nye ọrụ nke ọma, kọmpat na obere profile ngwọta maka mmezi nke ọkara-ebili mmiri. Etinyela nlezianya anya na nhazi osisi iji nye opekata mpe 104mil (2.6mm) n'etiti ụgbọ elu ọla kọpa buru ibu yana mkpochapụ dị ka enwere ike n'etiti akụrụngwa na akara iji hụ na DC3117A na-arụ ọrụ ruo oke vol.tage nke ihe ndị a họọrọ.

DC3117A bụ bọọdụ nwere okpukpu abụọ nwere ọla kọpa 2oz na oyi akwa ọ bụla. Ọla kọpa na ụzọ ike nwere ike iburu 2A na-aga n'ihu, dabere na ọnọdụ ọnọdụ. Ọzọkwa, ụgbọ elu ọla kọpa niile dị n'ụzọ ike na-agbaji okpukpu abụọ n'elu akwa ọla kọpa nke ala ebe enwere ike. Na akụrụngwa ndabara, agbanyeghị, ibu dị ugbu a na-ejedebe na 20ARMS site na ọkwa dị ugbu a nke C1.2.

Mgbe dochie C2 na 2.2mF capacitor, ibu dị ugbu a nwere ike ịbawanye ruo 5ARMS na ọnọdụ okpomọkụ nke 25°C. Na 5ARMS na-ebu ibu ngwugwu okpomọkụ nke IPT60R050G7 ruru 95°C.

Maka ịdị mfe nke nleba anya ihe nyocha ka ewepụtara maka ntụtụ LT4322.

Ndị na-esonụ bụ nkọwa nkenke nke isi ihe nke DC3117A.

U1 - Onye njikwa DIODE

U1 bụ LT4322 na ngwugwu 8-pin, 3mm x 3mm akụkụ-wettable DFN. Maka nkọwa ndị ọzọ, rụtụ aka na mpempe data LT4322 na ọrụ ya.

M1 – IDEAL DIODE MOSFET

M1 bụ Infineon N-Channel MOSFET IPT60R050G7 na ngwugwu HSOF. Ahọpụtara ya maka mgbawa 600V drain-to-source breakdown voltage, ± 20V VGS (MAX), na 43mΩ igbapu-na-isi iyi na steeti nguzogide (na 10V VGS). M1's ± 20V VGS (max) dakọtara na oke 12V na draịva ọnụ ụzọ LT4322. Mgbe ntinye na mmepụta dị na -170V na +170V n'otu n'otu (peak AC line voltage), M1's drain-to-source voltage bụ 340V. Nke a dị mma n'okpuru M1's 600V drain-to-source breakdown voltage nkọwapụta.

M2 – MOSFET MKPỤTA

M2 bụ ọnọdụ mbelata Microchip N-Channel MOSFET DN2450K4 na ngwugwu TO-243AA (SOT-89). Ahọpụtara ya maka mgbawa mmiri 500V-na-isi iyi voltage na 700mA IDSS. Mgbe ntinye dị na -170V na mmepụta dị na 170V, M2's drain-to-source voltage dị nso 340V, n'enweghị nsogbu n'okpuru nkọwa mmebi 500V ya. 700mA IDSS na-enye ohere 50mA ruo 100mA ugbu a kacha elu nke pin LT4322 VDDC chọrọ ka ọ na-enye ume ike nchekwa nchekwa VDDA ya.

C1 NA C1B – VDDA RESERVOIR CAPACITORS

N'ihi ike voltage ọnụọgụ, n'ezie uru nke multilayer ceramic capacitors na-adịkarị obere karịa ihe ekwuru, karịsịa na vol.tages nso kacha nke capacitor voltage rating. Ọzọkwa, voltage ọnụọgụ bụ ọrụ nke nha anụ ahụ capacitor. A na-ahọrọ 2220, 25V ceramic capacitor maka C1B iji nweta ezigbo uru nke 22µF na volta ọrụ 12V.tage maka ngwa 60Hz a.

N'aka nke ọzọ, maka ngwa 60Hz, ndị ọrụ nwere ike ibunye C1 na 0.1µF seramiiki capacitor ma na-ere 22µF aluminum electrolytic capacitor n'etiti pin LT4322's VDDA na ntinye ntinye kama ibipụta C1B. Maka ntinye ugboro ugboro ≥ 200Hz, ndị ọrụ nwere ike ịhapụ C1B enweghị mmadụ ma bipụta naanị C1.

CG1 - Ọnụ ụzọ ámá CAPACITOR

A na-akwụ ụgwọ LT4322 nke ọma site na ike 10nF n'etiti ọnụ ụzọ ámá na isi iyi nke MOSFET ike mpụga. Mkpa CG1 dabere na nhọrọ nke M1 na uru CISS dị n'ime ya. N'ihe banyere IPT60R050G7, CG1 juputara na ikike 10nF iji kwalite nkwụsi ike na nhazi n'ihu. Maka nkọwa ndị ọzọ, rụtụ aka na ngalaba Nhọrọ Capacitor Gate nke mpempe data LT4322.

C2, C2-2 - Mpụta Mpụta

Mmepụta capacitors C2 na C2-2 na-enye ibu nrụpụta ugbu a maka ọtụtụ oge AC. Maka nkọwa ndị ọzọ, rụtụ aka na Nhọrọ Capacitor COUT nke mpempe akwụkwọ data LT4322 na ịhọrọ uru capacitance dị ka ọrụ nke mmepụta ibu ugbu a, oge AC, na oke mmepụta ikike vol.tage tufuo. Onyonyo 3 na-egosi mmepụta voltage si na 170V gaa na 72V maka ibu mgbochi 1.2ARMS na oge 16.7ms (60Hz) mgbe C2 = 150µF.

Ọgụgụ 3. Arụmọrụ ahụkarị n'okpuru 1.2ARMS Ibu Nguzogide

Ndị ọrụ ga-ahụrịrị na RMS dị ugbu a na capacitor agaghị agafe oke nrịba dị ugbu a ka ọ ghara imebi ndụ capacitor. Ihe nrịba elu nke electrolytic capacitor dị ugbu a bụ ọrụ nke RMS dị ugbu a, ugboro na ọnọdụ okpomọkụ. Gaa na nkọwapụta nke onye nrụpụta wee hụ na ngwaọrụ ahọpụtara dabara adaba iji rụọ ọrụ n'ime oge achọrọ, ọnọdụ okpomọkụ na ibu ọnọdụ ngwa ahụ ugbu a.

Mpempe akwụkwọ akụrụngwa nhọrọ

A na-enye ụfọdụ akụrụngwa (M1, M2, C2, na C3) mpe mpe akwa na-enweghị ihe iji nwalee ụkpụrụ na nha dị iche iche ma ọ bụ sekit ndị ọzọ sitere na LT4322 akwụkwọ data. Ụfọdụ n'ime paịlị ndị a agbakwunyere dị n'azụ bọọdụ ahụ.

M1 nwere akara ukwu MOSFET zuru ụwa ọnụ na elu elu abụọ ahụ iji nabata ngwugwu ike-SO8, DPAK, D2PAK, HSOF, na LFPAK. Ndị ọrụ nwere ike wunye akara ukwu M1 n'elu na ala n'otu oge iji jikọọ MOSFET ike abụọ n'otu aka ahụ, si otú a na-ebelata mkpokọta ike MOSFET site na ihe abụọ. M2 nwere akara ukwu n'azụ maka ngwugwu DPAK.

Ebe bọọdụ bi na otu aluminom electrolytic capacitor C2 na mmepụta voltage site na ndabara, enwere akara ukwu maka ọzọ aluminom electrolytic capacitor C2-2 na multilayer ceramic capacitor C3 na mmepụta. Nke a na-enye ndị ọrụ ohere ịnwale nchikota dị iche iche nke mkpokọta mmepụta capacitance yana ESR nwere ibu dị iche iche dị ugbu a.

A na-enye akụrụngwa R3, R4, C4, na C5 iji kwado netwọkụ snubbing nhọrọ. Ọ bụ ezie na a na-ejupụta na ndabara, ha adịghị mkpa n'ọtụtụ ngwa. Maka nkọwa ndị ọzọ, rụtụ aka na ngalaba ntinye Snubber nke mpempe data LT4322.

VOLTAGE, UGBUA, Mgbanwe Ugboro ugboro

Maka elu voltage arụ ọrụ, hụ Tebụl 2 ma hụ na ihe ndị ahụ ekwuru na-ezute ma ọ bụ gafere opekempe voltage chọrọ maka ntinye/mpụta ihe achọrọ voltages. N'ihi topology ọkara ebili mmiri, rịba ama na ihe mejupụtara M1 na M2 ga-enwerịrị ike iguzogide volta kacha elu ruo n'elu.tage nke ntinye ntinye.

Ka ịgbanwee bọọdụ maka elu ugbu a, nwaa ihe ndị a n'usoro a, ebe ị ka na-ahụ na akụkụ bọọdụ niile na-ezute ma ọ bụ gafere ntakịrị ihe achọrọ ka akọwapụtara na ya. Tebụl 2:

Welie uru C2 ma kpalie ike ugbu a
Họrọ nnọchi M1 nwere uru RDS(ON) dị ala
Tinye FET nke abụọ dabara na iji akara ukwu MOSFET azụ

Maka ngwa na-eji ntinye ntinye AC na-erughị 20VRMS, enwere ike itinye R1 ka ọ bụrụ M2 dị mkpirikpi site na sekit. Maka ntinye AC ugboro ugboro dị elu, ọ kacha mma ịhọrọ C1 dị ala n'agbanyeghị uru arụnyere na-arụ ọrụ. Maka ugboro n'okpuru 60Hz, C1 ga-abawanye. Maka nkọwa ndị ọzọ, rụtụ aka na ngalaba nhọrọ VDDA Capacitor nke mpempe data LT4322.

Isiokwu 2. Voltage Ihe ndị achọrọ

Ntụaka akụkụ	Opekempe Voltage chọrọ
C1, C1B, CG1	16V
C2, C3, C4, C5	VIN (PEAK) ma ọ bụ VOUT achọrọ (MAXDC)
M1, M2	BVDSS ≥ VIN (PEAK-PEAK)

Atụmatụ Board Board

Ọgụgụ 4. DC3117A Eserese Eserese

Ozi inye iwu

ỤZỌ nke ihe

Tebụl 3. DC3117A Bill of Materials

Ihe	Ọnụọgụ	Akwụkwọ edemede	Nkọwa akụkụ	Onye nrụpụta, Nọmba akụkụ
Ngwa sekit achọrọ
1	1	C1	Capacitor, 22µF, X7R, 25 V, 10%, 1210	AVX, 12103C226KAT2A Kemet, GRM32ER71E226KE15L Murata, CL32B226KAJNNNE Samsung, CL32226KAJNNNE
2	1	C2	Capacitor, 150µF, Aluminom Electrolytic, 200 V, 20%, THT, Radial	Nichicon, UCS2D151MHD
3	1	C1B	Capacitor, CER 22 µF, 25 V, X7R, 2220	Kemet, C2220C226K3RAC7800 Kyocera AVX, 22203C226KAZ2A Cal-chip Electronics, GMC55X7R226K25NT
4	1	M1	Transistor, N-Channel MOSFET, 650 V, 44 A, HSOF-8	Infineon, IPT60R050G7 Infineon, IPT60R050G7XTMA1
5	1	M2	Transistor, N-Channel MOSFET, Ọnọdụ mmebi, 500 V, 230 mA, SOT-243AA (SOT-89)	Microchip, DN2450N8-G
6	1	RDG1	Nguzogide, 0 Ω, 1/16 W, 0402	NIC, NRC04ZOTRF R Ω, MCR01MZPJ000 Vishay, CRCW04020000Z0ED Yageo, RC0402JR-070RL
7	1	U1	IC, Active Bridge Ideal Diode Controller, DFN-8	Ngwaọrụ Analog, LT4322RDDM#PBF
Ihe mgbakwunye ngosi Board Circuit
8	0	C2-2	Capacitor, 150µF, Aluminom Electrolytic,	Nichicon, UCS2D151MHD
			200 V, 20%, THT, Radial
9	1	C4	Capacitor, 0.01µF, X7R, 2000 V, 10%, 2220	Kemet, C2220C103KGRACTU
10	1	C5	Capacitor, 0.01 µF, U2J, 250 V, 5%, 1206	Murata, GRM31B7U2E103JW31
11	0	C3	Capacitor, Nhọrọ, 1812
12	1	CG1	Capacitor, 0.01µF, X7R, 16 V, 10%, 0805	Wurth Elektronik, 885012207039
13	1	D1	LED, Green, Mmiri doro anya, 0805	Wurth Elektronik, 150080GS75000
14	0	M1-1	Transistor, N-Channel MOSFET, 650 V, 44	Infineon, IPT60R050G7
			A, HSOF-8	Infineon, IPT60R050G7XTMA1
15	0	M2-1	Transistor, N-Channel MOSFET, Ọnọdụ Mbelata, 500 V, 350 mA, TO -252AA (D-PAK)	Microchip, DN2450K4-G
16	0	R1	Nguzogide, Nhọrọ, 2010
17	1	R2	Nguzogide, 270 kΩ, 5%, 3/4W, 2010, AEC-	Panasonic, ERJ-12ZYJ274U
			Q200
18	1	R3	Nguzogide, 0 Ω, 1/8 W, 0805	Yageo, RC0805JR-070RL
19	1	R4	Nguzogide, 7.5 Ω, 5%, 1/4 W, 1206	Yageo, RC1206JR-077R5L
Akụrụngwa: maka naanị bọọdụ ngosi
20	4	E1,E2,E3,E4	Ihe nlele, turret, 0.094 ″ MTG. oghere, PCB 0.062 ″ THK	Mill-Max, 2501-2-00-80-00-00-07-0
21	4	J1,J2,J3,J4	Njikọ, Banana Jack, Nwanyi , THT, Na-abụghị Inusulated, , Swage , 0.218"	Isi okwu, 575-4
22	1	J5	Njikọ, DC PWR Jack , Nwanyị, 3 Okwu, 1 Port, 2 mm ID, 6.5 mm OD, HORZ, R/A, SMT, 24V_DC,5 A	CUI INC., PJ-002AH-SMT-TR
23 24	1 4	LB1 MP5, MP6, MP7, MP8	Label Spec, Nọmba Oghere Usoro Ihe ngosi Board Standoff, Naịlọn, Snap-On, 0.25 ″ (6.4 mm)	Brady, THT-96-717-10 Isi okwu, 8831 Wurth Elektronik, 702931000
25 26	1 0	PCB1 TP1, TP2, TP3, TP4	PCB, DC3117A Ebe ule, 0.044″, 0.275 L x 0.093 W, TH	Onye na-ebubata akwadoro, 600-DC3117A Isi okwu, 1036

Akpachara anya ESD
ESD (electrostatic drainage) ngwaọrụ nwere mmetụta. Ngwa chaja na bọọdụ sekit nwere ike ịpụpụ na-enweghị nchọpụta. Ọ bụ ezie na ngwaahịa a nwere ikike sekit nchebe ma ọ bụ sekit nchebe, mmebi nwere ike ime na ngwaọrụ ndị nwere ESD ike dị elu. Ya mere, ekwesịrị ịkpachapụ anya ESD kwesịrị ekwesị iji zere mmebi arụmọrụ ma ọ bụ enweghị ọrụ.

Usoro na ọnọdụ iwu

Site na iji bọọdụ nyocha a tụlere ebe a (yana ngwa ọ bụla, akwụkwọ akụrụngwa ma ọ bụ ihe nkwado, “Evaluation Board”), ị na-ekwenye na usoro na ọnọdụ ndị edepụtara n'okpuru (“Agreement”) ga-ejide gị ma ọ bụrụ na ị zụtala ya. Board Evaluation, nke ikpe na ụkpụrụ na ọnọdụ nke ire ihe Analog Devices ga-achị. Ejila Board Evaluation ruo mgbe ị gụrụ ma kwenye na Agreement. Ojiji gị nke Board Evaluation ga-egosi nnabata gị nke Agreement. Emere nkwekọrịta a n'etiti gị ("Onye ahịa") na Ngwaọrụ Analog, Inc. ("ADI"), ya na isi ebe azụmahịa ya na N'okpuru usoro na ọnọdụ nke Agreement, ADI na-enye ndị ahịa ikike n'efu, oke, nkeonwe, nwa oge, nke na-abụghị nke na-enweghị isi, nke na-abụghị nke sublicensable, na-enweghị ike ibufe ya. jiri Board Evaluation for Evaluation PurPOSes naanị. Onye ahịa ghọtara wee kweta na ewepụtara Board Evaluation maka naanị na naanị ebumnuche a kpọtụrụ aha n'elu, ma kweta na ịghara iji Board Evaluation maka ebumnuche ọ bụla ọzọ. Ọzọkwa, akwụkwọ ikike enyere bụ nke enyere n'okpuru oke oke ndị a: Onye ahịa agaghị (i) ịgbazite, ịgbazinye ego, gosipụta, ree, nyefe, kenye, inye ikike, ma ọ bụ kesaa Board Evaluation; na (ii) kwe ka onye nke atọ ọ bụla nweta Board Evaluation. Dị ka e ji mee ihe n'ime ebe a, okwu ahụ bụ "Ndị ọzọ nke atọ" gụnyere ihe ọ bụla ọzọ karịa ADI, ndị ahịa, ndị ọrụ ha, ndị mmekọ na ndị na-ahụ maka ụlọ. A naghị ere Board Evaluation nye onye ahịa; Ikike niile enyeghị nke ọma n'ime ebe a, gụnyere nwe nke Board Evaluation, bụ ADI dobere. Nzuzo. Nkwekọrịta a na Board Evaluation ka a ga-ewere dị ka ozi nzuzo na nke ADI. Onye ahịa enweghị ike igosipụta ma ọ bụ bufee akụkụ ọ bụla nke Board Evaluation na ndị ọzọ ọ bụla maka ihe kpatara ya. Mgbe a kwụsịrị iji Board Evaluation ma ọ bụ nkwụsị nke nkwekọrịta a, onye ahịa kwetara iweghachite Board Evaluation ozugbo na ADI. Mgbochi agbakwunyere. Onye ahịa enweghị ike ịkwasa, chịkọta ma ọ bụ tụgharịa ibe injinia na Board Evaluation. Onye ahịa ga-agwa ADI maka mmebi ọ bụla mebiri ma ọ bụ mgbanwe ọ bụla ma ọ bụ mgbanwe ọ na-eme na Board Evaluation, gụnyere ma ọnweghị oke na ire ere ma ọ bụ ọrụ ọ bụla ọzọ na-emetụta ọdịnaya nke Board Evaluation. Mgbanwe na Board Evaluation ga-agbasorịrị iwu dị mkpa, gụnyere mana ọnweghị oke na ntuziaka RoHS. Nkwụsị. ADI nwere ike ịkwụsị nkwekọrịta a n'oge ọ bụla mgbe inye ndị ahịa ozi ederede. Onye ahịa kwetara ịlaghachi na ADI Board Evaluation n'oge ahụ. MKWU nke ibu. A na-enye bọọdụ nleba anya n'okpuru ebe a “Dị ka ọ dị” yana ADI emeghị ka ọ nweghị akwụkwọ ikike ma ọ bụ nnochite anya nke ụdị ọ bụla na-asọpụrụ ya. ADI KPỌPỌPỤTARA NKỌPỌTA Nnọchiteanya ọ bụla, nkwado, KWESỊRỊ, ma ọ bụ akwụkwọ ikike, KWESỊRỊ ma ọ bụ KWESỊRỊ, metụtara bọọdụ nyocha gụnyere, mana ọnweghị oke na, akwụkwọ ikike ikike nke ụlọ ahịa, Ebumnobi ma ọ bụ enweghị mmegide nke ikike ikike ọgụgụ isi. Ọ BỤGHỊ ihe omume ADI na ndị na-enye ya ikikere ga-akwụ ụgwọ maka mmebi iwu ọ bụla, nke pụrụ iche, nke ezoghị ọnụ, ma ọ bụ nke ga-esi na ya pụta site n'inweta onye ahịa ma ọ bụ iji bọọdụ nyocha, gụnyere achụmnta ego, na-ebunye ego. Ụrụ ọrụ ma ọ bụ mgbaghara nke ọdịmma. Mkpokọta ibu ADI si n'aka ihe ọ bụla na ihe niile ga-echitere ọnụ ahịa otu narị US dollar ($100.00). Mbupu. Onye ahịa kwenyere na ọ gaghị ebupụ Board Evaluation ozugbo ma ọ bụ na-apụtaghị ìhè na obodo ọzọ, yana na ọ ga-agbaso iwu na ụkpụrụ gọọmentị etiti United States niile metụtara mbupụ. IWU NA-ACHỊ. Nkwekọrịta a ga-achị ma tụgharịa ya n'ụzọ kwekọrọ n'ụkpụrụ iwu nke Commonwealth nke Massachusetts (ewezuga iwu esemokwu). A ga-anụ ihe ọ bụla gbasara iwu gbasara nkwekọrịta a na steeti ma ọ bụ ụlọ ikpe gọọmenti etiti nwere ikike na Suffolk County, Massachusetts, na ndị ahịa na-enyefe ikike na ebe ụlọ ikpe dị otú ahụ.

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