This standard is applicable to carbon resistor columns (carbon columns) used as variable resistors in various aviation voltage regulators and TD4 series voltage regulators.
JB/T 2664.2-1999 history
2010JB/T 2664.2-2010 Column with carbon resistance chips of voltage regulator.Part 2:Column with carbon resistance chips of speciel voltage regulator
1999JB/T 2664.2-1999 Column with carbon resistance chips of speciel voltage regulator