RE: Origin of power symbols 0 and 1?

Subject: RE: Origin of power symbols 0 and 1? Rich, I remember asking this question of a senior BS safety committee officer many years ago. His opinion was that these symbols went back to steam systems indicating the status of the boiler output i.e. the closed valve or the open line. He went

RE: Origin of power symbols 0 and 1?

: Tuesday, October 08, 2002 10:19 AM To: emc-p...@majordomo.ieee.org Subject: Origin of power symbols 0 and 1? I am looking for the origin of the power symbols 0 (off) and 1 (on). The earliest standards that I have are CEE 10 and similar where

Re: Origin of power symbols 0 and 1?

I read in !emc-pstc that Rich Nute ri...@sdd.hp.com wrote (in 200210081719.kaa10...@epgc264.sdd.hp.com) about 'Origin of power symbols 0 and 1?' on Tue, 8 Oct 2002: I am looking for the origin of the power symbols 0 (off) and 1 (on). The earliest standards that I have are CEE 10 and similar

Origin of power symbols 0 and 1?

I am looking for the origin of the power symbols 0 (off) and 1 (on). The earliest standards that I have are CEE 10 and similar where the standard specifies something like: Where a rotary switch is used for power, the 0 position shall be off and the 1 and higher position shall be