The High-voltage differential reference article from the English Wikipedia on 24-Jul-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

High-voltage differential

Some toggle switches control large amounts of voltage. Alternating currents can be stepped up by a transformer to a high voltage. Because of Ohm's law, electrical energy losses are dependent on current flow, not on energy flow. By using transformers, the voltage of the power can be stepped up or stepped down.

Transmission

Efficient electricity transmission and distribution systems operate over long distances at very high voltages. The principles regarding frequency and power level for the first primitive RADAR units used high voltage, high frequency alternating currents.

See also

• General: Toggle switch, Alternating current, Radar, Substation
• People: Nikola Tesla

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