A CDI box can be tested using a device called an ohm meter, which measures electrical resistance. The ohm meter can be attached to either input or export wires, ensuring that the CDI box is both receiving power and transmitting it.
Continue ReadingBegin by checking the owner's manual for the CDI box to find the device's electrical resistance specs. If the CDI box is in good working order, the readings on the ohm meter should match these specs. Beginning with the input wire, plug the ohm meter in, and turn over the engine to which the CDI box is attached. Make a note of the readings. If they are within the range listed in the manual, proceed to check the output wire.
Learn more about Car Parts & MaintenanceOhm's law is mainly used when building electrical devices to determine the amount of resistance needed to establish a certain current with a certain amount of voltage. Without Ohm's law, the circuit may have too much or too little current or voltage.
Full Answer >You can bypass a capacitor-discharge ignition (CDI) box temporarily for troubleshooting purposes. Since a CDI box transmits voltage from the pick-up coil in the stator to the ignition coil and does not generate continuous sparks, it cannot store enough voltage to keep the engine running.
Full Answer >The three formulas associated with Ohm’s law are the equations that demonstrate the relationships between voltage, current and resistance and follow from the formula for determining voltage by multiplying current by resistance. Knowing any two of these variables enables the calculation of the third unknown variable.
Full Answer >An Ohm's Law calculator is used to substitute values into an equation that compares voltage to resistance to determine electrical current. On a DC circuit, it is a straightforward ratio, but even with AC, it can be used for an approximation. Ohm's Law can also help determine power consumption.
Full Answer >