YJ93A programmable DC standard voltage source is a high-resolution intelligent DC standard voltage source,

Capable of outputting a wide voltage range, high power, and high accuracy DC standard voltage under computer or manual control,

It is a necessary instrument for establishing an automatic testing system and verification system with YS66 programmable AC standard voltage source and YJ98 programmable AC/DC standard current source.

Specially suitable as a standard instrument for directly calibrating DC digital voltmeters, pointer voltmeters, recording instruments, etc，

Widely used in metrology, instrumentation, quality supervision and other departments of industrial and mining enterprises, scientific research, national defense and military units.