UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Quick-and-dirty testgear: mains voltage monitor.

Biggles · 24th Aug 2018, 5:12 pm

I just have an analogue panel meter permanently connected across the mains in the workshop, wall mounted and with an in line fuseholder and fuse at about 100mA. The meters are available for direct reading 0-300VAC and as long as you aren't wanting a reading to three decimal points they are fine. They would be ideal for your variac too. On my mains supply, the meter shifts about quite a bit, depending on the time of day. I got mine from ESR Components. I do use one of those little 12V digital modules for monitoring my 12V "ring main" in the workshop. I was initially a bit concerned about RFI from it, but there doesn't appear to be a problem.
Alan.

24th Aug 2018, 5:12 pm	#31
Biggles Rest in Peace Join Date: Feb 2004 Location: Hexham, Northumberland, UK. Posts: 2,234	Re: Quick-and-dirty testgear: mains voltage monitor. I just have an analogue panel meter permanently connected across the mains in the workshop, wall mounted and with an in line fuseholder and fuse at about 100mA. The meters are available for direct reading 0-300VAC and as long as you aren't wanting a reading to three decimal points they are fine. They would be ideal for your variac too. On my mains supply, the meter shifts about quite a bit, depending on the time of day. I got mine from ESR Components. I do use one of those little 12V digital modules for monitoring my 12V "ring main" in the workshop. I was initially a bit concerned about RFI from it, but there doesn't appear to be a problem. Alan.