At the same time, builders were being thinking about making use of another technique in metal detection identified as pulse induction.[15] Contrary to the beat frequency oscillator or perhaps the induction harmony machines, which both of those used a uniform alternating current in a lower frequency, the pulse induction (PI) https://metaldetector-ace-250-gar11100.fliplife-wiki.com/3477017/not_known_factual_statements_about_via_gold_metal_detector