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By definition, this is the equivalent of a continuous power dissipation of 1 mW , i.e., the power consumed if a voltage of 0.775 V is applied to a telephone line with 600 Ohm nominal impedance. [ 1 ] In the Bell System , central offices provided this type of service on a dedicated telephone number (102 type Milliwatt line) for remote subscriber ...
Various tables and calculators are available that provide a means of determining the appropriate resistor values for achieving particular loss values, such as that published by the NAB in 1960 for losses ranging from 1/2 to 40 dB, for use in 600 ohm circuits.
In audio, 0 dBm often corresponds to approximately 0.775 volts, since 0.775 V dissipates 1 mW in a 600 Ω load. [16] The corresponding voltage level is 0 dBu, without the 600 Ω restriction. Conversely, for RF situations with a 50 Ω load, 0 dBm corresponds to approximately 0.224 volts, since 0.224 V dissipates 1 mW in a 50 Ω load.
The name twin lead is most often used to refer specifically to 300 Ω (Ohm) ribbon cable, the most common type, but on occasion, twin lead is used to refer to any type of parallel wire line. Parallel wire line is available with several different values of characteristic impedance such as twin lead ribbon cable (300 Ω ), window line (300 Ω ...
By day, WGSO is powered at 600 watts, using a non-directional antenna. But 990 AM is a clear channel frequency so WGSO must reduce power at night to 310 watts to avoid interference to other stations.
While the 49ers and Rams battled with an eye towards the playoffs, other teams are hoping to land the top draft pick in April.
Dell OptiPlex Series 4 DT, SFF and USFF Chassis. OptiPlex (a portmanteau of "optimal" and "-plex") is a line of business-oriented desktop and all-in-one computers made for corporate enterprises, healthcare, the government, and education markets.
Basically, Ohm's law was well established and stated that the current J and voltage V driving the current are related to the resistance R of the material. The inverse of the resistance is known as the conductance.
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