Which ammeter DMM or VOM has the higher loading effect Why?

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1183468

2026-04-15 12:51

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A digital multimeter (DMM) typically has a lower loading effect compared to a volt-ohm meter (VOM), particularly older analog models. The loading effect refers to the impact a measuring device has on the circuit being measured; a higher loading effect can alter the circuit's behavior. DMMs generally have higher input impedance, which minimizes the current drawn from the circuit, resulting in less loading. In contrast, VOMs, especially those with lower impedance, can significantly affect circuit performance when measuring current.

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