View Single Post
  #20   Report Post  
Posted to sci.electronics.repair
[email protected] jfeng@my-deja.com is offline
external usenet poster
 
Posts: 125
Default Vintage equipment voltage measurement

On Sunday, August 19, 2018 at 11:30:00 AM UTC-7, mike wrote:
What's so hard about putting a resistor in parallel with your meter?

Even better would be to understand why they specified VOMs with 20k/V sensitivity, and the implications with modern instruments.

Back in those days, the commonly-available multimeters were 1k/V and 20k/V VOMs and 11 Meg VTVMs. The cheaper 1k/V would load down the circuit and give an erroneously low voltage reading. With the 20k/V VOM and the VTVM, this error was usually smaller than the inaccuracy in the analog meter movement.