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By the nature of its unique design, the EP15A stores considerable reserve energy internally. Reserve energyis used to replace bad or the lack of full power coming out of your wall socket. This Reserve Power is used by the EP15A to correct two common deficiencies that cripple audio and video systems.
For example, a large audio power amplifier may demand 45 amps of peak current. It is plugged into an outlet that is connected to the breaker panel by wires. When the amplifier demands current, these wires unavoidably create a voltage drop over their length. For a 15 amp branch circuit, Ohm’s law dictates that a peak current of 45 amps would produce a 18 volt drop! In other words, an outlet that measured 120 volts with no load would deliver only 102 volts under this brief overload condition. The EP15A uses its Reserve Power to satisfy the peak current demands of the amplifier, while correcting the peak voltage to its full value. Reserve Power effectively compensates for voltage drop from losses in the wiring allowing the power amplifier to deliver its full dynamic capability and to fill in the missing audio details.
The second situation is a “transient” drop or “sag” in the incoming line voltage. These are most often caused by a heavy load elsewhere on the utility power distribution system, often inside your own building. A common example is the sag caused by the start-up of a refrigerator, washing machine, vacuum cleaner or other household appliance utilzing a large motor. These motors typically draw very high currents for a short time as they accelerate to operating speed. Due to voltage drop in premises wiring, lights in the house are often observed to dim briefly when this occurs. Sometimes the effect of such a “sag” can be noticed in other equipment, such as a brief shrinkage of the TV image or brief dropout in the audio. Under this condition, the EP15A uses Reserve Power to fill in the sag, supplying constant and undisturbed output power. In fact, when such sags are severe, the unit can supply over 7,000 watts of power for 10ms (over half a cycle at 60Hz) and 5,000 watts for a full cycle at 60Hz. The reserve energy is sufficient to supply its full 1,500 watts rated output for 50ms or 3 full cycles at 60Hz. Even longer term sags or “brownouts” can be corrected as long as the incoming voltage doesn’t fall below 90 volts.
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The EP15A stores “reserve energy” over the full line voltage waveform and returns it as usable current during the peak of the waveform where audio equipment uses it. By supplying Reserve Power when it is needed, severe peak waveform distortion is avoided and audio video equipment can realize its optimum performance.
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Reserve Power is used to reconstruct the EP15A output voltage to its proper level when the outlet voltage (EP15A input) is low for any reason. Reserve Power assures that optimum performance is maintained.
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| Reserve Power is used to restore sinusoidal shape to the EP15A output voltage when the outlet voltage is distorted for any reason. Waveform correction and output filtering remove unwanted harmonics that can affect audio and video purity. |
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