Hello Luis, one way to change the range without opening meter is to use two 4/1 radio transformers: - first transformer high side to the TX, and low side to one and of the meter - second transformer
Hi Luis, the range is determined by athe thickness of the heater wire betweemn the terminals. there is a thermocouple welded to the centre of this wire and there may be a coil of wire between the t/c
Hi Rik, A nice drawing, remindes me to the early times of the internet and before ;-) As Alan suggested, what about a single core working as a current transformer? BTW ferrite cores, i have got my pa
Thank you for the comments Rik, Alan, Stefan The idea of external transformers seems better than digging inside this venerable instrument. And permits an easy two scale configuration If a single tran
Hi Luis, a single transformer, as suggested by Alan, will do the job. 73, Rik ON7YD - OR7T Van: [email protected] <[email protected]> namens VIGILANT Luis Fernández
Hello Louis, <<< Stefan. Don't blame me if I call you .....Lord of Rings :-))))) >>> If I remember correct it gave only one Ring and that one was bad enough on its own! 73, Roelof, pa0rdt
Some detailed pictures of the instrument https://dl.dropboxusercontent.com/u/7162072/Fotos%20varias/MF/IMG_20160505_083944.jpg Thermocouple details https://dl.dropboxusercontent.com/u/7162072/Fotos%2
