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What causes 12v dc motor to to drop variably to 2v to 7v under load?
Wiki User
∙ 11y ago
Too much load, or too weak of a supply. When a motor is initially started, it will pull a higher than normal amount of current. A sag may occur if the supply is too small, and then it should rebound after a short period of time. If the voltage stays low, either the supply is well undersized, or the motor is pulling more current than it should (either the load is too heavy for the motor or the motor is damaged or dirty).
Wiki User
∙ 11y ago
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