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The new ExaPen from Rotkee opens up electrical diagnostic testing allowing you to load test wires that are difficult to access connected. The ExaPen applies a 1 kilo-ohm resistor to the circuit which will help diagnose voltage drop on identify high resistance circuits. The ExaPen also features a PWM (Pulse With Modulation) output which allows you to adjust positive and negative duty cycle up to 20 amps! (this prototype maxed out at 15 amps). The tool is very safe to use and utilizes an electronic fuse which checks the circuit as you test; unlike a thermal fuse which requires an increase in current before it pops (risky). The tool also features some very basic oscilloscope features, like a graphing multimeter and low spec oscilloscope. Check it out!
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