\u1ed1ng Teflon<\/a><\/span> ho\u1eb7c g\u1ed1m.<\/span><\/p>\n\u0110\u1ec3 k\u1ebft n\u1ed1i d\u1ec5 d\u00e0ng, h\u00e3y l\u1eafp \u0111\u1ea7u n\u1ed1i BNC tr\u00ean \u0111i\u1ec7n c\u1ef1c b\u00ean ngo\u00e0i. \u0110\u1eb7t b\u00ean ngo\u00e0i BNC v\u1ecf ho\u1eb7c t\u1ea5m ch\u1eafn \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi \u0111i\u1ec7n c\u1ef1c b\u00ean ngo\u00e0i v\u00e0 sau \u0111\u00f3 d\u00e2y d\u1eabn b\u00ean trong c\u1ee7a \u0111\u1ea7u n\u1ed1i BNC \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi \u0111i\u1ec7n c\u1ef1c b\u00ean trong s\u1eed d\u1ee5ng m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i k\u1ebft n\u1ed1i \u0111\u1ea7u n\u1ed1i BNC v\u1edbi \u0111\u1ea7u v\u00e0o triax c\u1ee7a \u0111i\u1ec7n k\u1ebf.<\/span><\/p>\nPh\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m:<\/strong><\/em><\/span> \u0110\u1ec3 th\u1eed nghi\u1ec7m, m\u1ed9t s\u1ee3i c\u00e1p c\u00f3 v\u1ecf b\u1ecdc \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 k\u1ebft n\u1ed1i \u0111i\u1ec7n k\u1ebf v\u1edbi c\u1ed1c Faraday. M\u1edf Electrometer, ch\u1ecdn ch\u1ee9c n\u0103ng Coulomb, sau \u0111\u00f3 t\u1eaft “Zero Check”. Nh\u1ea5n “Rel” \u0111\u1ec3 hi\u1ec3n th\u1ecb d\u01b0\u1edbi d\u1ea1ng s\u1ed1 kh\u00f4ng. \u0110\u1eb7t v\u1eadt \u0111\u00e3 t\u00edch \u0111i\u1ec7n c\u1ea7n th\u1eed v\u00e0o c\u1ed1c Faraday. Ghi ngay s\u1ed1 \u0111\u1ecdc \u0111i\u1ec7n t\u00edch tr\u00ean \u0111i\u1ec7n k\u1ebf.<\/span><\/p>\nKh\u00f4ng \u0111\u1ee3i s\u1ed1 \u0111\u1ecdc \u1ed5n \u0111\u1ecbnh, v\u00ec d\u00f2ng ph\u00e2n c\u1ef1c \u0111\u1ea7u v\u00e0o c\u1ee7a \u0111i\u1ec7n k\u1ebf s\u1ebd li\u00ean t\u1ee5c \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ea7u v\u00e0o c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u0111ang s\u1ea1c. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng khi \u0111i\u1ec7n t\u00edch ch\u01b0a bi\u1ebft c\u00f3 th\u1ee9 t\u1ef1 piccoulomb. N\u1ebfu \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c h\u01b0\u1edbng d\u1eabn c\u01a1 th\u1ec3, n\u00f3 s\u1ebd ph\u00f3ng \u0111i\u1ec7n ngay khi ti\u1ebfp x\u00fac v\u1edbi c\u00e1c \u0111i\u1ec7n c\u1ef1c. \u0110\u1ec3 chu\u1ea9n b\u1ecb cho ph\u00e9p \u0111o ti\u1ebfp theo. B\u1eadt “Ki\u1ec3m tra b\u1eb1ng kh\u00f4ng” \u0111\u1ec3 \u0111\u1eb7t l\u1ea1i thi\u1ebft b\u1ecb v\u1ec1 kh\u00f4ng.<\/span><\/p>\n