Electricity: power supply or regulation systems – Input level responsive – Using a transformer or inductor as the final control device
Patent
1999-02-13
2000-07-11
Han, Jessica
Electricity: power supply or regulation systems
Input level responsive
Using a transformer or inductor as the final control device
323356, 363142, 363146, G05F 500, H02M 110
Patent
active
060878185
ABSTRACT:
A voltage booster device for increasing the voltage level of power received by a recreational vehicle (RV) from a separate 120-volt power source includes an electrical box, a power cord and female outlet on the box, and an encapsulated transformer within the box. The transformer (e.g., an autotransformer) is adapted to increase the actual voltage level of the separate 120-volt power source a predetermined amount. A relay is provided for switching the transformer, the power cord, and the female outlet between (i) a first circuit configuration that couples power from the power cord to the female outlet via the transformer so that the transformer increases the voltage level by the predetermined amount, and (ii) a second circuit configuration that bypasses the transformer so that the transformer does not increase the voltage level by the predetermined amount. A control circuit controls the relay so that (i) the relay switches to the first circuit configuration when the actual voltage of the separate 120-volt power source falls below a predetermined first threshold level, and (ii) the relay switches to the second circuit configuration when the actual voltage rises above a predetermined second threshold level. One embodiment includes a mounting plate with a rounded end that functions as a handle, and a case-hardened steel loop that receives a security chain.
REFERENCES:
patent: 4937731 (1990-06-01), Konopka
patent: 5859756 (1999-01-01), Pressman et al.
patent: 5973948 (1999-10-01), Hahn et al.
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