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Frustrated by his Aldi multimeter’s backlight turning off after just 15 seconds, [Steg Steg] took matters into his own hands. His solution? He added a manual toggle switch to control the ...

In this case 2 meter 1.5 mm copper wire is enough ... will not fit in a single layer in the inside diameter of the toroid. To keep the parasitic capacitance small we chose the hard way to create the ...