This, as with most forms of electrical welding, simply completes a circuit through which a DC current is passed.

A DC current of 3 to 20 mA is typically required for CW operation.

The resulting DC current can then be used to power an external load.

DC current does not cause the coils to make eddy currents in the disk, so this causes reduced rotation and a lower bill.

Even simple mechanical meters can have mechanical flags that are dropped by magnetic tampering or large DC currents.

During the journey down the regeneration column, a DC current is passed across the electrochemical cell of which the adsorbent forms the anode.

They will hold their position when a DC current is applied to both the stator and the rotor windings.

DC current would require conductor-contact, or visible sparks, at both ends.

However, in an inductive grid the metal is continuous, and hence DC currents can exist.

A DC current is passed through the cell and the NaCl splits into its constituent components.