{"id":1966,"date":"2026-10-02T01:19:07","date_gmt":"2026-10-02T01:19:07","guid":{"rendered":"http:\/\/ritoks.com\/"},"modified":"2026-10-06T01:08:55","modified_gmt":"2026-10-06T01:08:55","slug":"diode-module-forward-voltage-power-loss-evidence","status":"publish","type":"post","link":"https:\/\/ritoks.com\/vi\/diode-module-forward-voltage-power-loss-evidence\/","title":{"rendered":"B\u1eb1ng ch\u1ee9ng v\u1ec1 \u0111i\u1ec7n \u00e1p thu\u1eadn v\u00e0 t\u1ed5n th\u1ea5t c\u00f4ng su\u1ea5t c\u1ee7a m\u00f4-\u0111un \u0111i-\u1ed1t"},"content":{"rendered":"

\u0110i\u1ec7n \u00e1p thu\u1eadn l\u00e0 m\u1ed9t trong nh\u1eefng th\u00f4ng s\u1ed1 \u0111\u1ea7u v\u00e0o \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u01b0\u1edbc t\u00ednh nhi\u1ec7t trong m\u00f4-\u0111un \u0111i-\u1ed1t c\u00f4ng su\u1ea5t. \u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t gi\u00e1 tr\u1ecb c\u1ed1 \u0111\u1ecbnh c\u00f3 th\u1ec3 sao ch\u00e9p t\u1eeb m\u1ed9t gi\u00e1 tr\u1ecb d\u00f2ng \u0111i\u1ec7n, nhi\u1ec7t \u0111\u1ed9 ho\u1eb7c c\u1ea5u tr\u00fac n\u00e0y sang m\u1ed9t gi\u00e1 tr\u1ecb kh\u00e1c. Tr\u01b0\u1edbc khi so s\u00e1nh c\u00e1c m\u00f4-\u0111un, k\u1ef9 s\u01b0 c\u1ea7n c\u00f3 d\u1ea1ng s\u00f3ng d\u00f2ng \u0111i\u1ec7n th\u1ef1c t\u1ebf, \u0111\u01b0\u1eddng d\u1eabn d\u1eabn \u0111i\u1ec7n, nhi\u1ec7t \u0111\u1ed9 thi\u1ebft b\u1ecb v\u00e0 d\u1eef li\u1ec7u \u0111\u1eb7c t\u00ednh thu\u1eadn ch\u00ednh x\u00e1c c\u1ee7a m\u00f4 h\u00ecnh.<\/p>\n

This article explains what diode forward-voltage information can and cannot establish for a thermal review. It does not prescribe a loss number for a RITOKS module or replace a system calculation. The supplier’s current datasheet and the application’s duty profile remain decisive.<\/p>\n

\u0110i\u1ec7n \u00e1p thu\u1eadn bi\u1ec3u th\u1ecb \u0111i\u1ec1u g\u00ec<\/h2>\n

M\u1ed9t \u0111i\u1ed1t d\u1eabn \u0111i\u1ec7n theo chi\u1ec1u thu\u1eadn khi c\u00f3 s\u1ef1 s\u1ee5t \u00e1p tr\u00ean n\u00f3. Nh\u00e2n \u0111i\u1ec7n \u00e1p t\u1ee9c th\u1eddi th\u00edch h\u1ee3p v\u1edbi d\u00f2ng \u0111i\u1ec7n t\u1ee9c th\u1eddi s\u1ebd cho ra t\u1ed5n th\u1ea5t \u0111i\u1ec7n t\u1ee9c th\u1eddi, ch\u1ee7 y\u1ebfu bi\u1ec3u hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng nhi\u1ec7t trong thi\u1ebft b\u1ecb. T\u1ed5ng l\u01b0\u1ee3ng nhi\u1ec7t trong m\u1ed9t chu k\u1ef3 ph\u1ee5 thu\u1ed9c v\u00e0o s\u1ef1 bi\u1ebfn thi\u00ean \u0111\u1ed3ng th\u1eddi c\u1ee7a d\u00f2ng \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n \u00e1p, ch\u1ee9 kh\u00f4ng ch\u1ec9 d\u1ef1a v\u00e0o m\u1ed9t \u0111i\u1ec3m duy nh\u1ea5t \u0111\u01b0\u1ee3c \u0111\u1ecdc t\u1eeb \u0111\u1ed3 th\u1ecb.<\/p>\n

B\u1ea3ng d\u1eef li\u1ec7u c\u1ee7a m\u00f4-\u0111un ngu\u1ed3n c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb c\u00e1c \u0111\u01b0\u1eddng cong \u0111i\u1ec7n \u00e1p thu\u1eadn t\u1ea1i nhi\u1ec1u m\u1ee9c nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec3m n\u1ed1i kh\u00e1c nhau ho\u1eb7c cung c\u1ea5p m\u00f4 h\u00ecnh \u0111\u01a1n gi\u1ea3n h\u00f3a \u201cng\u01b0\u1ee1ng c\u1ed9ng \u0111\u1ed9 d\u1ed1c\u201d. C\u00e1c c\u00e1ch tr\u00ecnh b\u00e0y n\u00e0y \u0111\u00e1p \u1ee9ng c\u00e1c nhu c\u1ea7u t\u00ednh to\u00e1n kh\u00e1c nhau. M\u1ed9t \u0111\u01b0\u1eddng cong \u0111i\u1ec3n h\u00ecnh gi\u00fap hi\u1ec3u r\u00f5 h\u00e0nh vi ho\u1ea1t \u0111\u1ed9ng, nh\u01b0ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o bi\u00ean \u0111\u1ed9 an to\u00e0n trong thi\u1ebft k\u1ebf, c\u00f3 th\u1ec3 c\u1ea7n ph\u1ea3i s\u1eed d\u1ee5ng \u0111\u1eb7c t\u00ednh t\u1ed1i \u0111a ho\u1eb7c ph\u01b0\u01a1ng ph\u00e1p do nh\u00e0 s\u1ea3n xu\u1ea5t khuy\u1ebfn ngh\u1ecb. H\u00e3y x\u00e1c nh\u1eadn xem nh\u00e0 cung c\u1ea5p mong \u0111\u1ee3i c\u00e1ch tr\u00ecnh b\u00e0y n\u00e0o cho tr\u01b0\u1eddng h\u1ee3p nhi\u1ec7t \u0111\u1ed9 x\u1ea5u nh\u1ea5t.<\/p>\n

Temperature matters because diode forward behavior changes as the semiconductor warms. Do not mix a room-temperature curve with a hot operating current and treat the result as a validated maximum loss. Infineon’s semiconductor application material discusses the temperature dependence of diode forward drop; the magnitude and direction over a particular operating range must be taken from the exact device data.<\/p>\n

H\u00e3y s\u1eed d\u1ee5ng d\u1ea1ng s\u00f3ng d\u00f2ng \u0111i\u1ec7n hi\u1ec7n t\u1ea1i, ch\u1ee9 kh\u00f4ng ch\u1ec9 d\u1ef1a v\u00e0o d\u00f2ng \u0111i\u1ec7n ghi tr\u00ean nh\u00e3n hi\u1ec7u<\/h2>\n

Ask how the diode conducts in the actual circuit. A rectifier leg, freewheel path and anti-reverse path can have very different conduction intervals even if the load current is similar. Capture average, RMS, peak and duty-cycle information as required by the manufacturer’s calculation model. A smooth DC current and a narrow repetitive pulse should not be treated as equivalent merely because their average values match.<\/p>\n

Ghi l\u1ea1i c\u1ea5u tr\u00fac m\u1ea1ch v\u00e0 x\u00e1c \u0111\u1ecbnh c\u00e1c chip ho\u1eb7c \u0111\u01b0\u1eddng d\u1eabn \u0111i\u1ed1t b\u00ean trong n\u00e0o d\u1eabn d\u00f2ng \u0111i\u1ec7n. Trong m\u1ed9t m\u00f4-\u0111un ch\u1ee9a nhi\u1ec1u h\u01a1n m\u1ed9t thi\u1ebft b\u1ecb, nhi\u1ec7t l\u01b0\u1ee3ng t\u1ed5ng c\u1ee7a m\u00f4-\u0111un l\u00e0 t\u1ed5ng c\u1ee7a c\u00e1c t\u1ed5n th\u1ea5t t\u1eeb c\u00e1c th\u00e0nh ph\u1ea7n li\u00ean quan, trong khi th\u00e0nh ph\u1ea7n n\u00f3ng nh\u1ea5t c\u00f3 th\u1ec3 quy\u1ebft \u0111\u1ecbnh gi\u1edbi h\u1ea1n nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec3m n\u1ed1i. Do \u0111\u00f3, s\u01a1 \u0111\u1ed3 k\u1ebft n\u1ed1i l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a ph\u00e2n t\u00edch nhi\u1ec7t, ch\u1ee9 kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t ph\u1ee5 ki\u1ec7n n\u1ed1i d\u00e2y.<\/p>\n

C\u1ea7n t\u00ednh \u0111\u1ebfn c\u00e1c \u0111i\u1ec1u ki\u1ec7n b\u1ea5t th\u01b0\u1eddng nh\u01b0ng c\u00f3 c\u01a1 s\u1edf th\u1ef1c t\u1ebf, ch\u1eb3ng h\u1ea1n nh\u01b0 khi kh\u1edfi \u0111\u1ed9ng, qu\u00e1 t\u1ea3i, c\u00e1c s\u1ef1 c\u1ed1 li\u00ean quan \u0111\u1ebfn ph\u1ee5c h\u1ed3i ng\u01b0\u1ee3c v\u00e0 c\u00e1c chu k\u1ef3 l\u1eb7p l\u1ea1i khi ch\u00fang \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn thi\u1ebft b\u1ecb. C\u1ea7n ph\u00e2n bi\u1ec7t r\u00f5 kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i nhi\u1ec7t li\u00ean t\u1ee5c v\u1edbi kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng c\u00e1c \u0111\u1ee3t t\u0103ng \u00e1p ng\u1eafn h\u1ea1n. Th\u00f4ng s\u1ed1 ch\u1ecbu \u0111\u1ef1ng \u0111\u1ee3t t\u0103ng \u00e1p kh\u00f4ng l\u1eb7p l\u1ea1i kh\u00f4ng ph\u1ea3i l\u00e0 th\u00f4ng s\u1ed1 t\u1ed5n th\u1ea5t thu\u1eadn cho ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng.<\/p>\n

\"S\u01a1
S\u1eed d\u1ee5ng d\u1ea1ng s\u00f3ng ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u0111\u01b0\u1eddng cong tr\u1ef1c ti\u1ebfp ch\u00ednh x\u00e1c \u0111\u1ec3 \u01b0\u1edbc t\u00ednh t\u1ed5n th\u1ea5t d\u1eabn \u0111i\u1ec7n c\u1ee7a \u0111i-\u1ed1t.<\/figcaption><\/figure>\n

H\u00e3y \u0111\u1ecdc c\u00e1c \u0111i\u1ec1u ki\u1ec7n trong b\u1ea3ng d\u1eef li\u1ec7u b\u00ean c\u1ea1nh \u0111\u01b0\u1eddng cong<\/h2>\n

Khi \u0111\u01b0\u1ee3c cung c\u1ea5p gi\u00e1 tr\u1ecb \u0111i\u1ec7n \u00e1p thu\u1eadn, h\u00e3y h\u1ecfi xem gi\u00e1 tr\u1ecb \u0111\u00f3 \u0111\u01b0\u1ee3c \u0111o \u1edf m\u1ee9c d\u00f2ng \u0111i\u1ec7n thu\u1eadn, nhi\u1ec7t \u0111\u1ed9 m\u1ed1i n\u1ed1i v\u00e0 \u0111i\u1ec1u ki\u1ec7n xung n\u00e0o. Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m c\u00f3 th\u1ec3 h\u1ea1n ch\u1ebf hi\u1ec7n t\u01b0\u1ee3ng t\u1ef1 sinh nhi\u1ec7t trong qu\u00e1 tr\u00ecnh \u0111o. M\u1ed9t gi\u00e1 tr\u1ecb duy nh\u1ea5t \u0111\u01b0\u1ee3c n\u00eau ra m\u00e0 kh\u00f4ng k\u00e8m theo c\u00e1c \u0111i\u1ec1u ki\u1ec7n n\u00e0y kh\u00f4ng th\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c t\u1ed5n th\u1ea5t trung b\u00ecnh trong m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t.<\/p>\n

Ki\u1ec3m tra xem bi\u1ec3u \u0111\u1ed3 c\u00f3 ph\u1ea3i l\u00e0 bi\u1ec3u \u0111\u1ed3 \u0111i\u1ec3n h\u00ecnh hay kh\u00f4ng v\u00e0 li\u1ec7u c\u00e1c gi\u00e1 tr\u1ecb gi\u1edbi h\u1ea1n c\u00f3 \u0111\u01b0\u1ee3c n\u00eau r\u00f5 ri\u00eang bi\u1ec7t hay kh\u00f4ng. So s\u00e1nh c\u00e1c m\u00f4-\u0111un thay th\u1ebf tr\u00ean c\u01a1 s\u1edf c\u00e1c \u0111i\u1ec1u ki\u1ec7n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng. Vi\u1ec7c l\u1ea5y \u0111i\u1ec3m th\u1ea5p nh\u1ea5t trong bi\u1ec3u \u0111\u1ed3 \u0111i\u1ec3n h\u00ecnh c\u1ee7a nh\u00e0 cung c\u1ea5p n\u00e0y v\u00e0 \u0111i\u1ec3m cao nh\u1ea5t c\u1ee7a nh\u00e0 cung c\u1ea5p kh\u00e1c s\u1ebd d\u1eabn \u0111\u1ebfn so s\u00e1nh sai l\u1ec7ch. N\u1ebfu thi\u1ebfu th\u00f4ng tin c\u1ea7n thi\u1ebft \u0111\u1ec3 chu\u1ea9n h\u00f3a so s\u00e1nh, h\u00e3y li\u1ec7t k\u00ea \u0111i\u1ec1u n\u00e0y d\u01b0\u1edbi d\u1ea1ng c\u00e2u h\u1ecfi ch\u01b0a c\u00f3 l\u1eddi gi\u1ea3i.<\/p>\n

H\u00e3y l\u01b0u \u00fd s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c th\u00f4ng s\u1ed1 t\u00ednh tr\u00ean m\u1ed7i chip, m\u1ed7i \u0111i-\u1ed1t v\u00e0 m\u1ed7i m\u00f4-\u0111un. \u0110\u1ed1i v\u1edbi c\u1ea5u tr\u00fac c\u1ea7u ho\u1eb7c c\u1ea5u tr\u00fac hai \u0111i-\u1ed1t, s\u1ed1 l\u01b0\u1ee3ng ph\u1ea7n t\u1eed d\u1eabn \u0111i\u1ec7n s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed5ng s\u1ee5t \u00e1p v\u00e0 nhi\u1ec7t sinh ra. H\u00e3y \u0111\u1ed1i chi\u1ebfu s\u01a1 \u0111\u1ed3 m\u1ea1ch b\u00ean trong v\u00e0 \u0111\u01b0\u1eddng d\u1eabn \u0111i\u1ec7n tr\u01b0\u1edbc khi t\u00ednh t\u1ed5ng t\u1ed5n th\u1ea5t. Thu\u1eadt ng\u1eef th\u01b0\u01a1ng m\u1ea1i \u201cm\u00f4-\u0111un \u0111i-\u1ed1t\u201d kh\u00f4ng cho bi\u1ebft c\u00f3 bao nhi\u00eau thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c n\u1ed1i ti\u1ebfp trong \u0111\u01b0\u1eddng d\u1eabn \u1ee9ng d\u1ee5ng.<\/p>\n

K\u1ebft n\u1ed1i t\u1ed5n th\u1ea5t \u0111i\u1ec7n v\u1edbi m\u1ea1ng nhi\u1ec7t<\/h2>\n

D\u1eef li\u1ec7u t\u1ed5n th\u1ea5t \u01b0\u1edbc t\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m \u0111\u1ea7u v\u00e0o cho m\u00f4 h\u00ecnh nhi\u1ec7t. Nhi\u1ec7t ph\u1ea3i truy\u1ec1n t\u1eeb \u0111i\u1ec3m n\u1ed1i qua v\u1ecf thi\u1ebft b\u1ecb, b\u1ec1 m\u1eb7t l\u1eafp \u0111\u1eb7t v\u00e0 b\u1ed9 t\u1ea3n nhi\u1ec7t v\u00e0o kh\u00f4ng kh\u00ed xung quanh ho\u1eb7c ch\u1ea5t l\u00e0m m\u00e1t. C\u1ea7n thu th\u1eadp d\u1eef li\u1ec7u nhi\u1ec7t ch\u00ednh x\u00e1c t\u1eeb \u0111i\u1ec3m n\u1ed1i \u0111\u1ebfn v\u1ecf thi\u1ebft b\u1ecb ho\u1eb7c d\u1eef li\u1ec7u nhi\u1ec7t t\u01b0\u01a1ng \u0111\u01b0\u01a1ng, \u0111\u1ed3ng th\u1eddi n\u1eafm r\u00f5 c\u00e1c \u0111i\u1ec3m tham chi\u1ebfu. Hi\u1ec7u su\u1ea5t c\u1ee7a b\u1ed9 t\u1ea3n nhi\u1ec7t ph\u1ea3i \u0111\u01b0\u1ee3c \u0111o l\u01b0\u1eddng ho\u1eb7c quy \u0111\u1ecbnh trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n lu\u1ed3ng kh\u00ed v\u00e0 l\u1eafp \u0111\u1eb7t ph\u00f9 h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng l\u1eafp \u0111\u1eb7t c\u1ee5 th\u1ec3.<\/p>\n

\u0110\u1ed1i v\u1edbi ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh, ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n s\u1ef1 t\u0103ng nhi\u1ec7t \u0111\u1ed9 \u0111\u01a1n gi\u1ea3n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 s\u00e0ng l\u1ecdc c\u00e1c ph\u01b0\u01a1ng \u00e1n, nh\u01b0ng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y d\u1ef1a tr\u00ean t\u1ed5n th\u1ea5t v\u00e0 \u0111i\u1ec7n tr\u1edf nhi\u1ec7t \u0111\u1ea1i di\u1ec7n. \u0110\u1ed1i v\u1edbi ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng thay \u0111\u1ed5i, c\u00f3 th\u1ec3 c\u1ea7n ph\u1ea3i xem x\u00e9t \u0111i\u1ec7n tr\u1edf nhi\u1ec7t qu\u00e1 \u0111\u1ed9 v\u00e0 kho\u1ea3ng th\u1eddi gian gi\u1eefa c\u00e1c xung. C\u00e1c xung l\u1eb7p l\u1ea1i c\u00f3 th\u1ec3 t\u00edch t\u1ee5 nhi\u1ec7t ngay c\u1ea3 khi m\u1ed7i xung ch\u1ec9 di\u1ec5n ra trong th\u1eddi gian ng\u1eafn. Tr\u00e1nh ch\u1ec9 d\u1ef1a v\u00e0o th\u00f4ng s\u1ed1 \u0111\u1ecbnh m\u1ee9c tr\u1ea1ng th\u00e1i \u1ed5n \u0111\u1ecbnh \u0111\u1ec3 lo\u1ea1i tr\u1eeb c\u00e1c \u0111\u1ec9nh nhi\u1ec7t l\u1eb7p l\u1ea1i.<\/p>\n

The interface between module and sink matters. Surface flatness, thermal interface material, mounting pressure and assembly procedure can change contact resistance. Infineon’s module installation guide emphasizes material and geometric effects on thermal transfer. The exact proposed module’s mounting manual must define the actual process.<\/p>\n

\u0110\u1eebng nh\u1ea7m l\u1eabn gi\u1eefa \u201cm\u1ea5t h\u01b0\u1edbng v\u1ec1 ph\u00eda tr\u01b0\u1edbc\u201d v\u1edbi \u201cch\u1eb7n ng\u01b0\u1ee3c\u201d<\/h2>\n

D\u1eef li\u1ec7u v\u1ec1 \u0111i\u1ec7n \u00e1p thu\u1eadn gi\u00fap \u01b0\u1edbc t\u00ednh t\u1ed5n hao khi \u0111i-\u1ed1t d\u1eabn \u0111i\u1ec7n. C\u00e1c th\u00f4ng s\u1ed1 v\u1ec1 \u0111i\u1ec7n \u00e1p ngh\u1ecbch ph\u1ea3n \u00e1nh kh\u1ea3 n\u0103ng ng\u0103n ch\u1eb7n d\u00f2ng \u0111i\u1ec7n theo chi\u1ec1u ng\u01b0\u1ee3c l\u1ea1i c\u1ee7a \u0111i-\u1ed1t trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n quy \u0111\u1ecbnh. Hai th\u00f4ng s\u1ed1 n\u00e0y kh\u00f4ng th\u1ec3 thay th\u1ebf cho nhau. M\u1ed9t m\u00f4-\u0111un c\u00f3 th\u1ec3 c\u00f3 ch\u1ec9 s\u1ed1 t\u1ed5n hao d\u1eabn \u0111i\u1ec7n h\u1ea5p d\u1eabn nh\u01b0ng l\u1ea1i kh\u00f4ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u00e1c y\u00eau c\u1ea7u v\u1ec1 \u0111i\u1ec7n \u00e1p ho\u1eb7c kh\u1ea3 n\u0103ng ch\u1ed1ng s\u1ed1c \u0111i\u1ec7n c\u1ee7a m\u1ea1ch.<\/p>\n

\u0110\u1ec3 \u0111\u00e1nh gi\u00e1 \u1ee9ng vi\u00ean m\u1ed9t c\u00e1ch c\u00f4ng b\u1eb1ng, h\u00e3y tr\u00ecnh b\u00e0y c\u00e1c th\u00f4ng s\u1ed1 nh\u01b0 t\u1ef7 l\u1ec7 ho\u1ea1t \u0111\u1ed9ng \u0111i\u1ec7n \u00e1p, t\u1ef7 l\u1ec7 ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed9t bi\u1ebfn, d\u1ea1ng s\u00f3ng d\u00f2ng \u0111i\u1ec7n v\u00e0 h\u00e0nh vi nhi\u1ec7t trong c\u00e1c c\u1ed9t ri\u00eang bi\u1ec7t. M\u1ed7i th\u00f4ng s\u1ed1 \u0111\u1ec1u c\u00f3 b\u1eb1ng ch\u1ee9ng d\u1ef1a tr\u00ean m\u00f4 h\u00ecnh ch\u00ednh x\u00e1c ri\u00eang. N\u1ebfu \u0111ang xem x\u00e9t \u1ee9ng d\u1ee5ng ch\u1ed1ng \u0111\u1ea3o chi\u1ec1u, h\u00e3y x\u00e1c minh m\u1ee9c \u0111i\u1ec7n \u00e1p ng\u01b0\u1ee3c d\u1ef1 ki\u1ebfn v\u00e0 c\u00e1c k\u1ecbch b\u1ea3n s\u1ef1 c\u1ed1 thay v\u00ec k\u1ebft lu\u1eadn r\u1eb1ng m\u00f4-\u0111un ph\u00f9 h\u1ee3p ch\u1ec9 d\u1ef1a tr\u00ean \u0111i\u1ec7n \u00e1p thu\u1eadn th\u1ea5p.<\/p>\n

So s\u00e1nh c\u00e1c \u1ee9ng vi\u00ean t\u1ea1i c\u00f9ng m\u1ed9t v\u1ecb tr\u00ed c\u00f4ng t\u00e1c<\/h2>\n
Tr\u01b0\u1eddng so s\u00e1nh<\/th>D\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o c\u1ee7a d\u1ef1 \u00e1n<\/th>B\u1eb1ng ch\u1ee9ng m\u1eabu<\/th><\/tr><\/thead>
D\u1ea1ng s\u00f3ng hi\u1ec7n t\u1ea1i<\/td>C\u01b0\u1eddng \u0111\u1ed9, th\u1eddi gian k\u00e9o d\u00e0i v\u00e0 t\u1ea7n su\u1ea5t l\u1eb7p l\u1ea1i<\/td>\u0110\u01b0\u1eddng cong k\u1ef3 h\u1ea1n ho\u1eb7c m\u00f4 h\u00ecnh t\u1ed5n th\u1ea5t<\/td><\/tr>
Nhi\u1ec7t \u0111\u1ed9<\/td>Ph\u1ea1m vi d\u1ef1 ki\u1ebfn c\u1ee7a \u0111i\u1ec3m n\u1ed1i v\u00e0 m\u00f4i tr\u01b0\u1eddng xung quanh<\/td>D\u1eef li\u1ec7u thu\u1eadn chi\u1ec1u theo nhi\u1ec7t \u0111\u1ed9 c\u1ee5 th\u1ec3<\/td><\/tr>
T\u00f4 p\u00f4<\/td>C\u00e1c thi\u1ebft b\u1ecb d\u1eabn \u0111i\u1ec7n trong t\u1eebng tr\u1ea1ng th\u00e1i<\/td>S\u01a1 \u0111\u1ed3 m\u1ea1ch b\u00ean trong<\/td><\/tr>
\u0110\u01b0\u1eddng d\u1eabn nhi\u1ec7t<\/td>Giao di\u1ec7n, b\u1ed3n r\u1eeda v\u00e0 lu\u1ed3ng kh\u00ed<\/td>Tr\u1edf kh\u00e1ng nhi\u1ec7t v\u00e0 h\u01b0\u1edbng d\u1eabn l\u1eafp \u0111\u1eb7t<\/td><\/tr>
C\u00e1c y\u1ebfu t\u1ed1 g\u00e2y c\u0103ng th\u1eb3ng kh\u00e1c<\/td>\u0110i\u1ec7n \u00e1p ng\u01b0\u1ee3c v\u00e0 c\u00e1c s\u1ef1 c\u1ed1 t\u0103ng \u00e1p \u0111\u1ed9t ng\u1ed9t<\/td>C\u00e1c ch\u1ec9 s\u1ed1 \u0111\u00e1nh gi\u00e1 trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n li\u00ean quan<\/td><\/tr><\/tbody><\/table><\/figure>\n

C\u1ea7n ghi ch\u00e9p l\u1ea1i c\u00e1c gi\u1ea3 \u0111\u1ecbnh t\u00ednh to\u00e1n v\u00e0 qu\u00e1 tr\u00ecnh \u0111i\u1ec1u ch\u1ec9nh c\u1ee7a t\u1eebng b\u1ea3ng d\u1eef li\u1ec7u. N\u1ebfu m\u1ed9t s\u1ea3n ph\u1ea9m thay th\u1ebf s\u1eed d\u1ee5ng b\u1ed1 c\u1ee5c b\u00ean trong ho\u1eb7c v\u1ecf b\u1ecdc kh\u00e1c, \u0111\u01b0\u1eddng d\u1eabn nhi\u1ec7t c\u00f3 th\u1ec3 thay \u0111\u1ed5i ngay c\u1ea3 khi \u0111\u01b0\u1eddng cong d\u00f2ng \u0111i\u1ec7n-\u0111i\u1ec7n \u00e1p tr\u00f4ng t\u01b0\u01a1ng t\u1ef1. B\u1ed9 ph\u1eadn mua s\u1eafm n\u00ean tr\u00e1nh vi\u1ec7c thay th\u1ebf s\u1ea3n ph\u1ea9m ch\u1ec9 d\u1ef1a tr\u00ean m\u1ee9c s\u1ee5t \u00e1p qu\u1ea3ng c\u00e1o th\u1ea5p h\u01a1n.<\/p>\n

\"B\u1ea3ng
H\u00e3y xem x\u00e9t t\u1ed5n th\u1ea5t truy\u1ec1n th\u1eb3ng, \u0111\u01b0\u1eddng d\u1eabn nhi\u1ec7t v\u00e0 \u1ee9ng su\u1ea5t ch\u1eb7n nh\u01b0 nh\u1eefng ki\u1ec3m tra b\u1eb1ng ch\u1ee9ng ri\u00eang bi\u1ec7t.<\/figcaption><\/figure>\n

X\u00e1c th\u1ef1c t\u1eadp h\u1ee3p \u0111\u00e3 c\u00e0i \u0111\u1eb7t<\/h2>\n

C\u00e1c t\u00ednh to\u00e1n tr\u00ean b\u00e0n th\u1eed nghi\u1ec7m h\u1ed7 tr\u1ee3 vi\u1ec7c l\u1ef1a ch\u1ecdn, nh\u01b0ng th\u1eed nghi\u1ec7m nhi\u1ec7t \u0111\u1ed9 khi l\u1eafp \u0111\u1eb7t s\u1ebd gi\u00fap ki\u1ec3m tra c\u00e1c gi\u1ea3 \u0111\u1ecbnh v\u1ec1 t\u1ed5n th\u1ea5t v\u00e0 kh\u1ea3 n\u0103ng l\u00e0m m\u00e1t. X\u00e1c \u0111\u1ecbnh d\u1ea1ng s\u00f3ng d\u00f2ng \u0111i\u1ec7n, nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng xung quanh, l\u01b0u l\u01b0\u1ee3ng kh\u00f4ng kh\u00ed, \u0111i\u1ec3m \u0111o v\u00e0 th\u1eddi gian \u0111\u1ea1t \u0111\u1ebfn tr\u1ea1ng th\u00e1i c\u00e2n b\u1eb1ng nhi\u1ec7t cho th\u1eed nghi\u1ec7m. S\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c nh\u00e0 s\u1ea3n xu\u1ea5t ph\u00ea duy\u1ec7t \u0111\u1ec3 li\u00ean h\u1ec7 nhi\u1ec7t \u0111\u1ed9 v\u1ecf t\u1ea3n nhi\u1ec7t ho\u1eb7c b\u1ed9 t\u1ea3n nhi\u1ec7t \u0111\u00e3 \u0111o \u0111\u01b0\u1ee3c v\u1edbi c\u00e1c \u0111i\u1ec1u ki\u1ec7n t\u1ea1i \u0111i\u1ec3m n\u1ed1i.<\/p>\n

N\u1ebfu k\u1ebft qu\u1ea3 kh\u00e1c v\u1edbi d\u1ef1 \u0111o\u00e1n, h\u00e3y ki\u1ec3m tra d\u00f2ng \u0111i\u1ec7n \u0111o \u0111\u01b0\u1ee3c, \u0111\u01b0\u1eddng d\u1eabn d\u1eabn \u0111i\u1ec7n b\u00ean trong, l\u1edbp ch\u1ea5t b\u00f4i tr\u01a1n v\u00e0 lu\u1ed3ng kh\u00ed qua b\u1ed9 t\u1ea3n nhi\u1ec7t tr\u01b0\u1edbc khi \u0111i\u1ec1u ch\u1ec9nh m\u00f4 h\u00ecnh. Ghi l\u1ea1i quy tr\u00ecnh l\u1eafp r\u00e1p cu\u1ed1i c\u00f9ng \u0111\u1ec3 c\u00e1c l\u1ea7n l\u1eafp r\u00e1p ti\u1ebfp theo c\u00f3 th\u1ec3 t\u00e1i t\u1ea1o \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh. M\u1ed9t nguy\u00ean m\u1eabu ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng khi l\u1edbp ch\u1ea5t b\u00f4i tr\u01a1n \u0111\u01b0\u1ee3c b\u00f4i b\u1eb1ng tay m\u1ed9t c\u00e1ch \u0111\u1eb7c bi\u1ec7t c\u1ea9n th\u1eadn kh\u00f4ng ph\u1ea3i l\u00e0 b\u1eb1ng ch\u1ee9ng \u0111\u1ee7 \u0111\u1ec3 \u0111\u01b0a v\u00e0o s\u1ea3n xu\u1ea5t.<\/p>\n

H\u00e3y ghi ch\u00e9p l\u1ea1i m\u1ecdi thay \u0111\u1ed5i v\u1ec1 thi\u1ebft k\u1ebf c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t nhi\u1ec7t: qu\u1ea1t kh\u00e1c, g\u00f3i m\u00f4-\u0111un, thanh d\u1eabn \u0111i\u1ec7n, th\u00e0nh v\u1ecf ho\u1eb7c v\u1eadt li\u1ec7u l\u1eafp \u0111\u1eb7t. Ngay c\u1ea3 m\u1ed9t s\u1ef1 \u0111i\u1ec1u ch\u1ec9nh c\u01a1 h\u1ecdc nh\u1ecf c\u0169ng c\u00f3 th\u1ec3 l\u00e0m thay \u0111\u1ed5i lu\u1ed3ng kh\u00ed ho\u1eb7c ch\u1ea5t l\u01b0\u1ee3ng ti\u1ebfp x\u00fac. H\u00e3y ki\u1ec3m tra l\u1ea1i th\u1eed nghi\u1ec7m li\u00ean quan thay v\u00ec cho r\u1eb1ng k\u1ebft qu\u1ea3 tr\u01b0\u1edbc \u0111\u00f3 v\u1eabn gi\u1eef nguy\u00ean.<\/p>\n

Ph\u1ea3i l\u00e0m g\u00ec khi c\u00e1c \u0111\u01b0\u1eddng cong ch\u01b0a ho\u00e0n ch\u1ec9nh<\/h2>\n

M\u1ed9t s\u1ed1 trang s\u1ea3n ph\u1ea9m ch\u1ec9 li\u1ec7t k\u00ea d\u00f2ng \u0111i\u1ec7n danh \u0111\u1ecbnh v\u00e0 m\u1ed9t \u0111i\u1ec3m \u0111i\u1ec7n \u00e1p thu\u1eadn. \u0110i\u1ec1u n\u00e0y l\u00e0 ch\u01b0a \u0111\u1ee7 \u0111\u1ec3 x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh nhi\u1ec7t chi ti\u1ebft cho m\u1ed9t d\u1ea1ng s\u00f3ng thay \u0111\u1ed5i. H\u00e3y y\u00eau c\u1ea7u nh\u00e0 cung c\u1ea5p cung c\u1ea5p \u0111\u01b0\u1eddng cong \u0111\u1ea7y \u0111\u1ee7, c\u00e1c h\u1ec7 s\u1ed1 t\u1ed5n hao ho\u1eb7c ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n \u1ee9ng d\u1ee5ng \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t. Gi\u1ea3i th\u00edch ph\u1ea1m vi d\u00f2ng \u0111i\u1ec7n v\u00e0 ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec3m n\u1ed1i m\u00e0 d\u1ef1 \u00e1n y\u00eau c\u1ea7u; n\u1ebfu kh\u00f4ng, nh\u00e0 cung c\u1ea5p c\u00f3 th\u1ec3 g\u1eedi t\u00e0i li\u1ec7u v\u1eabn b\u1ecf s\u00f3t v\u00f9ng quan tr\u1ecdng.<\/p>\n

N\u1ebfu ch\u1ec9 c\u00f3 s\u1eb5n d\u1eef li\u1ec7u \u0111i\u1ec3n h\u00ecnh, h\u00e3y coi k\u1ebft qu\u1ea3 \u0111\u00f3 l\u00e0 \u01b0\u1edbc t\u00ednh s\u00e0ng l\u1ecdc s\u01a1 b\u1ed9. C\u1ea7n d\u00e0nh m\u1ed9t bi\u00ean \u0111\u1ed9 kh\u00f4ng ch\u1eafc ch\u1eafn r\u00f5 r\u00e0ng v\u00e0 l\u00ean k\u1ebf ho\u1ea1ch th\u1ef1c hi\u1ec7n th\u1eed nghi\u1ec7m nhi\u1ec7t \u0111\u1ed9. Kh\u00f4ng \u0111\u01b0\u1ee3c ghi nh\u00e3n nhi\u1ec7t \u0111\u1ed9 t\u00ednh to\u00e1n l\u00e0 \u201cnhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a \u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o\u201d. N\u1ebfu kh\u00f4ng th\u1ec3 x\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c \u01b0\u1edbc t\u00ednh c\u00f3 c\u01a1 s\u1edf, h\u00e3y t\u1ea1m ho\u00e3n vi\u1ec7c l\u1ef1a ch\u1ecdn thay v\u00ec thay th\u1ebf b\u1eb1ng m\u1ed9t \u0111\u01b0\u1eddng cong thu\u1eadn ti\u1ec7n t\u1eeb m\u00f4-\u0111un kh\u00e1c. Ngay c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb c\u00f3 v\u1ecf b\u1ecdc t\u01b0\u01a1ng t\u1ef1 c\u0169ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c chip v\u00e0 k\u1ebft n\u1ed1i b\u00ean trong kh\u00e1c nhau.<\/p>\n

C\u00e1ch so\u1ea1n y\u00eau c\u1ea7u b\u00e1o gi\u00e1 m\u00f4-\u0111un \u0111i-\u1ed1t<\/h2>\n

Vui l\u00f2ng g\u1eedi s\u01a1 \u0111\u1ed3 m\u1ea1ch, d\u1ea1ng s\u00f3ng d\u00f2ng \u0111i\u1ec7n d\u1ef1 ki\u1ebfn, t\u1ef7 l\u1ec7 d\u1eabn \u0111i\u1ec7n, y\u00eau c\u1ea7u v\u1ec1 \u0111i\u1ec7n \u00e1p ch\u1eb7n, \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng v\u00e0 ph\u01b0\u01a1ng \u00e1n l\u00e0m m\u00e1t, c\u00e1c h\u1ea1n ch\u1ebf v\u1ec1 v\u1ecf b\u1ecdc c\u0169ng nh\u01b0 c\u00e1c b\u1eb1ng ch\u1ee9ng c\u1ee5 th\u1ec3 c\u1ea7n thi\u1ebft. H\u00e3y xem qua d\u00f2ng m\u00f4-\u0111un \u0111i-\u1ed1t<\/a> \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c ph\u01b0\u01a1ng \u00e1n th\u01b0\u01a1ng m\u1ea1i. C\u00e1c D\u00f2ng s\u1ea3n ph\u1ea9m MDA c\u1ef1c d\u01b0\u01a1ng chung<\/a> v\u00e0 D\u00f2ng s\u1ea3n ph\u1ea9m ch\u1ed1ng \u0111\u1ea3o chi\u1ec1u MD300A<\/a> \u0111\u00f3 l\u00e0 nh\u1eefng \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u kh\u00e1c nhau v\u1ec1 c\u1ea5u tr\u00fac m\u1ea1ng, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 nh\u1eefng khuy\u1ebfn ngh\u1ecb c\u00f3 th\u1ec3 thay th\u1ebf l\u1eabn nhau.<\/p>\n

Vui l\u00f2ng y\u00eau c\u1ea7u \u0111\u01b0\u1eddng cong d\u1ef1 b\u00e1o theo m\u00f4 h\u00ecnh ch\u00ednh x\u00e1c, d\u1eef li\u1ec7u nhi\u1ec7t, s\u01a1 \u0111\u1ed3 m\u1ea1ch b\u00ean trong v\u00e0 h\u01b0\u1edbng d\u1eabn l\u1eafp \u0111\u1eb7t qua Li\u00ean h\u1ec7 v\u1edbi RITOKS<\/a>. Y\u00eau c\u1ea7u nh\u00e0 cung c\u1ea5p x\u00e1c \u0111\u1ecbnh nh\u1eefng gi\u00e1 tr\u1ecb n\u00e0o l\u00e0 gi\u00e1 tr\u1ecb \u0111i\u1ec3n h\u00ecnh, gi\u00e1 tr\u1ecb gi\u1edbi h\u1ea1n hay gi\u00e1 tr\u1ecb c\u00f3 \u0111i\u1ec1u ki\u1ec7n. Ch\u1ec9 khi \u0111\u00f3, k\u1ef9 s\u01b0 m\u1edbi c\u00f3 th\u1ec3 so s\u00e1nh h\u00e0nh vi nhi\u1ec7t \u1edf c\u00f9ng \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh.<\/p>\n

C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n

\u0110i\u1ec7n \u00e1p thu\u1eadn th\u1ea5p h\u01a1n c\u00f3 ph\u1ea3i l\u00fac n\u00e0o c\u0169ng \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c m\u00f4-\u0111un m\u00e1t h\u01a1n kh\u00f4ng?<\/h3>\n

Kh\u00f4ng ph\u1ea3i t\u1ef1 \u0111\u1ed9ng. C\u1ea7n so s\u00e1nh c\u00e1c thi\u1ebft b\u1ecb \u1edf c\u00f9ng d\u1ea1ng s\u00f3ng d\u00f2ng \u0111i\u1ec7n v\u00e0 c\u00f9ng nhi\u1ec7t \u0111\u1ed9, sau \u0111\u00f3 t\u00ednh \u0111\u1ebfn \u0111\u01b0\u1eddng d\u1eabn nhi\u1ec7t c\u1ee7a v\u1ecf b\u1ecdc v\u00e0 h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t. M\u1ed9t \u0111i\u1ec3m \u0111i\u1ec7n \u00e1p thu\u1eadn duy nh\u1ea5t kh\u00f4ng th\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec3m n\u1ed1i khi thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t.<\/p>\n

T\u00f4i c\u00f3 th\u1ec3 nh\u00e2n \u0111i\u1ec7n \u00e1p danh \u0111\u1ecbnh v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n trung b\u00ecnh kh\u00f4ng?<\/h3>\n

Only if that approximation is consistent with the manufacturer’s method and the current\/temperature conditions. A varying waveform often needs integration or a validated loss model rather than one point.<\/p>\n

M\u1ed9t \u0111\u01b0\u1eddng cong \u0111i\u1ec3n h\u00ecnh c\u00f3 \u0111\u1ee7 \u0111\u1ec3 \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t cu\u1ed1i c\u00f9ng kh\u00f4ng?<\/h3>\n

Y\u00eau c\u1ea7u cung c\u1ea5p c\u01a1 s\u1edf thi\u1ebft k\u1ebf v\u00e0 m\u1ecdi th\u00f4ng s\u1ed1 t\u1ed1i \u0111a do nh\u00e0 s\u1ea3n xu\u1ea5t khuy\u1ebfn ngh\u1ecb. Vi\u1ec7c ph\u00ea duy\u1ec7t cu\u1ed1i c\u00f9ng ph\u1ea3i t\u00ednh \u0111\u1ebfn c\u00e1c y\u1ebfu t\u1ed1 bi\u1ebfn \u0111\u1ed9ng, \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t v\u00e0 ph\u01b0\u01a1ng ph\u00e1p l\u1eafp \u0111\u1eb7t c\u1ee5 th\u1ec3.<\/p>\n

T\u00f3m l\u1ea1i<\/h2>\n

\u0110i\u1ec7n \u00e1p thu\u1eadn ch\u1ec9 h\u1ed7 tr\u1ee3 vi\u1ec7c \u01b0\u1edbc t\u00ednh t\u1ed5n hao c\u1ee7a \u0111i-\u1ed1t khi d\u1ea1ng s\u00f3ng d\u00f2ng \u0111i\u1ec7n, nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u01b0\u1eddng d\u1eabn c\u1ee7a thi\u1ebft b\u1ecb \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh. Ph\u00f9 h\u1ee3p c\u00e1c \u0111\u01b0\u1eddng cong \u0111i\u1ec7n c\u1ee7a m\u00f4 h\u00ecnh ch\u00ednh x\u00e1c v\u1edbi \u0111\u01b0\u1eddng d\u1eabn nhi\u1ec7t v\u00e0 x\u00e1c th\u1ef1c c\u1ee5m linh ki\u1ec7n \u0111\u00e3 l\u1eafp \u0111\u1eb7t. Kh\u00f4ng \u0111\u01b0a c\u00e1c \u01b0\u1edbc t\u00ednh t\u1ed5n hao ch\u01b0a \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 v\u00e0o b\u1ea3ng k\u00ea v\u1eadt li\u1ec7u v\u00e0 n\u00eau r\u00f5 nh\u1eefng b\u1eb1ng ch\u1ee9ng c\u00f2n thi\u1ebfu.<\/p>\n

T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n