{"id":12921,"date":"2024-11-05T10:41:20","date_gmt":"2024-11-05T02:41:20","guid":{"rendered":"https:\/\/boqiled.com\/?p=12921"},"modified":"2025-12-03T17:11:04","modified_gmt":"2025-12-03T09:11:04","slug":"constant-voltage-vs-constant-current-led-drivers-which-one-is-right-for-your-leds","status":"publish","type":"post","link":"https:\/\/boqiled.com\/vi\/constant-voltage-vs-constant-current-led-drivers-which-one-is-right-for-your-leds\/","title":{"rendered":"B\u1ed9 \u0110i\u1ec1u Khi\u1ec3n LED \u0110i\u1ec7n \u00c1p Kh\u00f4ng \u0110\u1ed5i so v\u1edbi D\u00f2ng \u0110i\u1ec7n Kh\u00f4ng \u0110\u1ed5i: Lo\u1ea1i N\u00e0o Ph\u00f9 H\u1ee3p V\u1edbi \u0110\u00e8n LED C\u1ee7a B\u1ea1n?"},"content":{"rendered":"

C\u00f4ng ngh\u1ec7 LED \u0111\u00e3 c\u00e1ch m\u1ea1ng h\u00f3a chi\u1ebfu s\u00e1ng nh\u1edd hi\u1ec7u su\u1ea5t v\u00e0 t\u00ednh linh ho\u1ea1t, nh\u01b0ng vi\u1ec7c ch\u1ecdn sai b\u1ed9 \u0111i\u1ec1u khi\u1ec3n LED<\/a> c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111\u1ed9 s\u00e1ng kh\u00f4ng \u1ed5n \u0111\u1ecbnh, qu\u00e1 nhi\u1ec7t ho\u1eb7c gi\u1ea3m tu\u1ed5i th\u1ecd. \u0110i\u1ec7n \u00e1p kh\u00f4ng \u0111\u1ed5i<\/strong> v\u00e0 B\u1ed9 \u0111i\u1ec1u khi\u1ec3n LED d\u00f2ng kh\u00f4ng \u0111\u1ed5i<\/strong> l\u00e0 hai lo\u1ea1i ch\u00ednh, m\u1ed7i lo\u1ea1i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c \u1ee9ng d\u1ee5ng LED c\u1ee5 th\u1ec3. H\u00e3y kh\u00e1m ph\u00e1 s\u1ef1 kh\u00e1c bi\u1ec7t, l\u1ee3i \u00edch v\u00e0 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng t\u1ed1t nh\u1ea5t \u0111\u1ec3 gi\u00fap b\u1ea1n \u0111\u01b0a ra l\u1ef1a ch\u1ecdn s\u00e1ng su\u1ed1t cho nhu c\u1ea7u chi\u1ebfu s\u00e1ng LED c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n

S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa B\u1ed9 \u0111i\u1ec1u khi\u1ec3n LED \u0111i\u1ec7n \u00e1p kh\u00f4ng \u0111\u1ed5i v\u00e0 d\u00f2ng kh\u00f4ng \u0111\u1ed5i l\u00e0 g\u00ec?<\/h2>\n\n\n\n

B\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111i\u1ec7n \u00e1p kh\u00f4ng \u0111\u1ed5i<\/strong> duy tr\u00ec \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra \u1ed5n \u0111\u1ecbnh trong khi cho ph\u00e9p d\u00f2ng \u0111i\u1ec7n thay \u0111\u1ed5i d\u1ef1a tr\u00ean nhu c\u1ea7u c\u1ee7a \u0111\u00e8n LED \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i. Lo\u1ea1i b\u1ed9 \u0111i\u1ec1u khi\u1ec3n n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf \u0111i\u1ec7n \u00e1p c\u1ed1 \u0111\u1ecbnh, nh\u01b0 12V ho\u1eb7c 24V<\/strong>, v\u00e0 l\u00fd t\u01b0\u1edfng cho c\u00e1c thi\u1ebft l\u1eadp LED n\u01a1i t\u1ea5t c\u1ea3 \u0111\u00e8n LED c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ea5u song song. C\u00e1c \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn bao g\u1ed3m \u0111\u00e8n LED d\u00e2y<\/strong> v\u00e0 m\u1ed9t s\u1ed1 m\u00f4-\u0111un LED, n\u01a1i \u0111i\u1ec7n \u00e1p \u0111\u1ea7u v\u00e0o \u1ed5n \u0111\u1ecbnh l\u00e0 r\u1ea5t quan tr\u1ecdng.<\/p>\n\n\n\n

Ng\u01b0\u1ee3c l\u1ea1i, B\u1ed9 \u0111i\u1ec1u khi\u1ec3n d\u00f2ng kh\u00f4ng \u0111\u1ed5i<\/strong> gi\u1eef d\u00f2ng \u0111i\u1ec7n \u0111\u1ea7u ra \u1ed5n \u0111\u1ecbnh trong khi cho ph\u00e9p \u0111i\u1ec7n \u00e1p \u0111i\u1ec1u ch\u1ec9nh khi c\u1ea7n. C\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n n\u00e0y \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 theo d\u00f2ng \u0111i\u1ec7n c\u1ee5 th\u1ec3 m\u00e0 ch\u00fang cung c\u1ea5p, nh\u01b0 350mA, 700mA ho\u1eb7c 1A<\/strong>, v\u00e0 ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng LED c\u00f4ng su\u1ea5t cao. B\u1eb1ng c\u00e1ch duy tr\u00ec d\u00f2ng \u0111i\u1ec7n nh\u1ea5t qu\u00e1n, c\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n n\u00e0y ng\u0103n ng\u1eeba qu\u00e1 nhi\u1ec7t v\u00e0 h\u1ed7 tr\u1ee3 tu\u1ed5i th\u1ecd c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb chi\u1ebfu s\u00e1ng LED c\u00f4ng su\u1ea5t cao.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

T\u00f4i c\u00f3 c\u1ea7n B\u1ed9 \u0111i\u1ec1u khi\u1ec3n LED \u0111i\u1ec7n \u00e1p kh\u00f4ng \u0111\u1ed5i hay d\u00f2ng kh\u00f4ng \u0111\u1ed5i kh\u00f4ng?<\/strong><\/h2>\n\n\n\n

Vi\u1ec7c ch\u1ecdn b\u1ed9 \u0111i\u1ec1u khi\u1ec3n LED ph\u00f9 h\u1ee3p ph\u1ee5 thu\u1ed9c v\u00e0o \u1ee9ng d\u1ee5ng chi\u1ebfu s\u00e1ng v\u00e0 lo\u1ea1i LED c\u1ee7a b\u1ea1n. B\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111i\u1ec7n \u00e1p kh\u00f4ng \u0111\u1ed5i<\/strong> th\u01b0\u1eddng d\u1ec5 l\u1eafp \u0111\u1eb7t h\u01a1n, khi\u1ebfn ch\u00fang ph\u1ed5 bi\u1ebfn trong c\u00e1c thi\u1ebft l\u1eadp d\u00e2n d\u1ee5ng v\u00e0 t\u1ef1 l\u00e0m nh\u01b0 d\u1ea3i LED c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 s\u00e1ng<\/strong> v\u00e0 \u0111\u00e8n trang tr\u00ed. C\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n n\u00e0y th\u01b0\u1eddng c\u00f3 gi\u00e1 ph\u1ea3i ch\u0103ng h\u01a1n v\u00e0 c\u00f3 th\u1ec3 c\u1ea5p ngu\u1ed3n cho nhi\u1ec1u \u0111\u00e8n LED \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i song song.<\/p>\n\n\n\n

\"\"
B\u1ed9 \u0111i\u1ec1u khi\u1ec3n LED TRIAC c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 s\u00e1ng \u0111i\u1ec7n \u00e1p kh\u00f4ng \u0111\u1ed5i BQ-100TNAV 12V<\/figcaption><\/figure>\n\n\n\n

M\u1eb7t kh\u00e1c, B\u1ed9 \u0111i\u1ec1u khi\u1ec3n d\u00f2ng kh\u00f4ng \u0111\u1ed5i<\/strong> l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u \u0111\u1ed9 s\u00e1ng ch\u00ednh x\u00e1c v\u00e0 hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh theo th\u1eddi gian, nh\u01b0 chi\u1ebfu s\u00e1ng ki\u1ebfn tr\u00fac, bi\u1ec3n hi\u1ec7u th\u01b0\u01a1ng m\u1ea1i ho\u1eb7c m\u00e0n h\u00ecnh LED. B\u1eb1ng c\u00e1ch gi\u1eef d\u00f2ng \u0111i\u1ec7n \u1ed5n \u0111\u1ecbnh, ch\u00fang cung c\u1ea5p \u00e1nh s\u00e1ng nh\u1ea5t qu\u00e1n tr\u00ean c\u00e1c \u0111\u00e8n LED m\u1eafc n\u1ed1i ti\u1ebfp v\u00e0 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u1ee7a \u0111\u00e8n LED c\u00f4ng su\u1ea5t cao.<\/p>\n\n\n\n

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B\u1ed9 \u0111i\u1ec1u khi\u1ec3n LED c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 s\u00e1ng 0-10v d\u00f2ng kh\u00f4ng \u0111\u1ed5i BQ-060ANPC 1500<\/figcaption><\/figure>\n\n\n\n

S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa LED CC (d\u00f2ng kh\u00f4ng \u0111\u1ed5i) v\u00e0 CV (\u0111i\u1ec7n \u00e1p kh\u00f4ng \u0111\u1ed5i) l\u00e0 g\u00ec?<\/strong><\/h2>\n\n\n\n

\u0110\u00e8n LED t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c lo\u1ea1i b\u1ed9 \u0111i\u1ec1u khi\u1ec3n kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o thi\u1ebft k\u1ebf v\u00e0 nhu c\u1ea7u \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang. LED CC<\/strong> (d\u00f2ng kh\u00f4ng \u0111\u1ed5i) y\u00eau c\u1ea7u ngu\u1ed3n cung c\u1ea5p d\u00f2ng \u0111i\u1ec7n \u1ed5n \u0111\u1ecbnh \u0111\u1ec3 tr\u00e1nh c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 nh\u1ea5p nh\u00e1y ho\u1eb7c \u0111\u1ed9 s\u00e1ng kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u. C\u00e1c \u0111\u00e8n LED n\u00e0y \u0111\u01b0\u1ee3c h\u01b0\u1edfng l\u1ee3i t\u1eeb v\u00e0 b\u1ed9 \u0111i\u1ec1u khi\u1ec3n d\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ed5i<\/strong> trong c\u00e1c m\u00f4i tr\u01b0\u1eddng n\u01a1i \u0111\u1ed9 s\u00e1ng nh\u1ea5t qu\u00e1n v\u00e0 \u0111\u1ed9 tin c\u1eady l\u00e0 thi\u1ebft y\u1ebfu.<\/p>\n\n\n\n

\"s\u01a1
D\u00f2ng kh\u00f4ng \u0111\u1ed5i l\u00e0 g\u00ec?<\/figcaption><\/figure>\n\n\n\n

LED CV<\/strong> (\u0111i\u1ec7n \u00e1p kh\u00f4ng \u0111\u1ed5i), m\u1eb7t kh\u00e1c, ho\u1ea1t \u0111\u1ed9ng t\u1ed1t nh\u1ea5t v\u1edbi ngu\u1ed3n cung c\u1ea5p \u0111i\u1ec7n \u00e1p c\u1ed1 \u0111\u1ecbnh. Ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c thi\u1ebft l\u1eadp LED c\u00f4ng su\u1ea5t th\u1ea5p, \u0111\u01a1n gi\u1ea3n n\u01a1i \u0111i\u1ec7n \u00e1p \u0111\u1ea7u v\u00e0o \u1ed5n \u0111\u1ecbnh \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t nh\u1ea5t qu\u00e1n. V\u00ed d\u1ee5 bao g\u1ed3m d\u1ea3i LED v\u00e0 c\u00e1c \u0111\u00e8n LED \u0111\u1ea5u song song kh\u00e1c, n\u01a1i vi\u1ec7c th\u00eam ho\u1eb7c b\u1edbt \u0111\u00e8n LED kh\u1ecfi m\u1ea1ch l\u00e0 \u0111\u01a1n gi\u1ea3n m\u00e0 kh\u00f4ng c\u00f3 r\u1ee7i ro dao \u0111\u1ed9ng hi\u1ec7u su\u1ea5t.<\/p>\n\n\n\n

\"\u0111i\u1ec7n
\u0110i\u1ec7n \u00e1p kh\u00f4ng \u0111\u1ed5i l\u00e0 g\u00ec?<\/figcaption><\/figure>\n\n\n\n

T\u1ea1i sao d\u00f2ng kh\u00f4ng \u0111\u1ed5i t\u1ed1t h\u01a1n \u0111i\u1ec7n \u00e1p kh\u00f4ng \u0111\u1ed5i trong m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng?<\/strong><\/h2>\n\n\n\n

B\u1ed9 \u0111i\u1ec1u khi\u1ec3n d\u00f2ng kh\u00f4ng \u0111\u1ed5i<\/strong> mang l\u1ea1i l\u1ee3i \u00edch khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn \u01b0u ti\u00ean cho c\u00e1c \u1ee9ng d\u1ee5ng chi\u1ebfu s\u00e1ng \u0111\u00f2i h\u1ecfi kh\u1eaft khe. B\u1eb1ng c\u00e1ch duy tr\u00ec d\u00f2ng \u0111i\u1ec7n \u1ed5n \u0111\u1ecbnh, c\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n n\u00e0y \u0111\u1ea3m b\u1ea3o m\u1ed7i \u0111\u00e8n LED trong chu\u1ed7i ho\u1ea1t \u0111\u1ed9ng \u1edf \u0111\u1ed9 s\u00e1ng t\u1ed1i \u01b0u, kh\u00f4ng b\u1ecb qu\u00e1 nhi\u1ec7t. M\u1ee9c \u0111\u1ed9 ki\u1ec3m so\u00e1t n\u00e0y l\u00e0 thi\u1ebft y\u1ebfu trong c\u00e1c thi\u1ebft l\u1eadp c\u00f4ng su\u1ea5t cao, n\u01a1i ngay c\u1ea3 nh\u1eefng dao \u0111\u1ed9ng nh\u1ecf trong d\u00f2ng \u0111i\u1ec7n c\u0169ng c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 s\u00e1ng v\u00e0 tu\u1ed5i th\u1ecd. \u0110\u1ed1i v\u1edbi c\u00e1c l\u1eafp \u0111\u1eb7t th\u01b0\u01a1ng m\u1ea1i ho\u1eb7c c\u00f4ng nghi\u1ec7p, d\u00f2ng kh\u00f4ng \u0111\u1ed5i l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 b\u1ec1n<\/strong> c\u1ee7a h\u1ec7 th\u1ed1ng LED theo th\u1eddi gian.<\/p>\n\n\n\n

Tuy nhi\u00ean, b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111i\u1ec7n \u00e1p kh\u00f4ng \u0111\u1ed5i v\u1eabn c\u00f3 th\u1ec3 l\u00fd t\u01b0\u1edfng trong c\u00e1c m\u00f4i tr\u01b0\u1eddng \u0111\u01a1n gi\u1ea3n h\u01a1n, \u0111\u1eb7c bi\u1ec7t khi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u1edbi \u0111\u00e8n LED \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p \u0111i\u1ec7n tr\u1edf \u0111\u1ec3 ki\u1ec3m so\u00e1t d\u00f2ng \u0111i\u1ec7n. Trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p n\u00e0y, b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111i\u1ec7n \u00e1p kh\u00f4ng \u0111\u1ed5i<\/strong> cung c\u1ea5p hi\u1ec7u su\u1ea5t chi\u1ebfu s\u00e1ng \u0111\u00e1ng tin c\u1eady m\u00e0 kh\u00f4ng c\u1ea7n qu\u1ea3n l\u00fd d\u00f2ng \u0111i\u1ec7n ph\u1ee9c t\u1ea1p.<\/p>\n\n\n\n

\u01afu \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a B\u1ed9 \u0111i\u1ec1u khi\u1ec3n LED \u0111i\u1ec7n \u00e1p kh\u00f4ng \u0111\u1ed5i so v\u1edbi d\u00f2ng kh\u00f4ng \u0111\u1ed5i<\/strong><\/h2>\n\n\n\n
Lo\u1ea1i b\u1ed9 \u0111i\u1ec1u khi\u1ec3n<\/strong><\/th>\u01afu \u0111i\u1ec3m<\/strong><\/th>Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/strong><\/th><\/tr><\/thead>
\u0110i\u1ec7n \u00e1p kh\u00f4ng \u0111\u1ed5i<\/strong><\/td>D\u1ec5 l\u1eafp \u0111\u1eb7t, ph\u00f9 h\u1ee3p cho \u0111\u1ea5u song song, l\u00fd t\u01b0\u1edfng cho thi\u1ebft l\u1eadp c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 s\u00e1ng v\u00e0 th\u01b0\u1eddng c\u00f3 gi\u00e1 ph\u1ea3i ch\u0103ng<\/td>C\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111\u1ed9 s\u00e1ng kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u n\u1ebfu \u0111\u00e8n LED kh\u00f4ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u1ea5u h\u00ecnh \u0111i\u1ec7n \u00e1p kh\u00f4ng \u0111\u1ed5i (CV)<\/td><\/tr>
D\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ed5i<\/strong><\/td>\u0110\u1ea3m b\u1ea3o \u0111\u1ed9 s\u00e1ng \u1ed5n \u0111\u1ecbnh v\u00e0 tu\u1ed5i th\u1ecd cao, l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng su\u1ea5t l\u1edbn<\/td>Th\u01b0\u1eddng \u0111\u1eaft h\u01a1n v\u00e0 y\u00eau c\u1ea7u c\u1ea5u h\u00ecnh LED c\u1ee5 th\u1ec3<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u1ee8ng d\u1ee5ng t\u1ed1t nh\u1ea5t cho t\u1eebng lo\u1ea1i b\u1ed9 \u0111i\u1ec1u khi\u1ec3n LED<\/strong><\/h2>\n\n\n\n