With the Fisher v Whites XLT you still have to take account that the Fisher has 18 volts and the Whites only twelve.Then add efficiency of design. Fisher brought out the Impulse P.I. running on a few AA's when other pulse machines used brick sized battery packs. But Dave Johnson wanted to bring down overall detector weight and one way to do this was by reducing the current required. In this case he scavenged back some of the current going round the coil.
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9-Volt Battery Powered Detectors
- Thread starter berryman
- Start date