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I would see if one of the local motor rewinders can either offer a small quantity of shellac or suggest a local source, fortunately it is the stator as the type of shellac is more critical for the rotor and is usually baked, especially with the high centrifugal forces of a Universal motor. Al.

Years ago I attempted to search for standards for Electrical Control for Machinery, in both Canadian and US. The only thing I could find apart from the E.Code was the NFPA79, which most MTB's seem to abide by in N.A. As far as component standards, the DIN standard appears to have become the...

The way I interpret the JIC description of a N.O or N.C. switch Held Closed or open, is that the circuit that operates on the switch is de-activated, power off condition? M.

Wouldn't a slight variation to the 'off the shelf' condition be a N.C. limit switch held open symbol, or N.O. held closed symbol? Normally closed, and N.O. HELD closed are different symbols, and is still used as per the old JIC standard for device designation. M.

Great! Thanks M.

I know this is a long shot, but does anyone keep the old issues of Electronic Design? I am looking for Aug 2004, I need the source code that was evidentally printed along with an article on a low rpm tach using a PIC. Unfortunately the back issue on line do not show the code, although they refer...

Another ref is NFPA79 'Electrical Standards For Industrial Machinery' based on the electrical code. M.

In N.America there is the NFPA79 'Electrical Standards for Industrial Machinery', copies can be obtained from the NFPA site. M.