Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
186 words
A ballast means adapted to power a gas discharge lamp from a source of AC voltage, said source having a pair of output terminals, said ballast means comprising: a first inductor means connected in series with a capacitor means, thereby to form a first series-circuit; first connect means operable to permit connection of said first series-circuit across said pair of output terminals; a second inductor means connected in series with said gas discharge lamp, thereby to form a second series-circuit; and second connect means operable to connect said second series-circuit in parallel with said capacitor means; whereby, whenever only the first series-circuit is connected with the output terminals, power is drawn from the AC source at a power factor that is substantially the same as the power factor at which power is drawn from the AC source when said second series-circuit is connected in parallel with said capacitor means, the first series circuit having an unloaded Q factor, the first series circuit in combination with said second series circuit having a loaded Q factor, the unloaded Q factor being substantially larger than the loaded Q factor.
Claim 2
Dependent Claim
186 words
A ballast means adapted to power a gas discharge lamp from a source of AC voltage, said source having a pair of output terminals, said ballast means comprising: a first inductor means connected in series with a capacitor means, thereby to form a first series-circuit; first connect means operable to permit connection of said first series-circuit across said pair of output terminals; a second inductor means connected in series with said gas discharge lamp, thereby to form a second series-circuit; and second connect means operable to connect said second series-circuit in parallel with said capacitor means; whereby, whenever only the first series-circuit is connected with the output terminals, power is drawn from the AC source at a power factor that is substantially the same as the power factor at which power is drawn from the AC source when said second series-circuit is connected in parallel with said capacitor means, the first series circuit having an unloaded Q factor, the first series circuit in combination with said second series circuit having a loaded Q factor, the unloaded Q factor being substantially larger than the loaded Q factor.
Claim 3
Dependent Claim
198 words
An arrangement for ballasting a gas discharge lamp, comprising: a source of AC voltage of frequency substantially higher than that of the voltage on an ordinary electric utility power line, said source having a pair of output terminals; a first inductor means connected in series with a capacitor means to form a first series-circuit, this first series-circuit being: (i) connected across said output terminals and (ii) resonant at or near the frequency of said AC voltage; and a second inductor means connected in series with a gas discharge lamp, thereby to form a second series-circuit, this second series-circuit being operable to be connected in parallel with said capacitor means and, when so connected, operative to cause the combination of said first series-circuit and said second series-circuit to be resonant at or near the frequency of said AC voltage; whereby the connection of said series-circuit is accomplished substantially without change in the power factor at which power is drawn from said source, the first series circuit having a first Q factor, the first series circuit in combintion with said second series circuit having a second Q factor, the first Q factor being substantially larger than the second Q factor.
Claim 4
Dependent Claim
198 words
An arrangement for ballasting a gas discharge lamp, comprising: a source of AC voltage of frequency substantially higher than that of the voltage on an ordinary electric utility power line, said source having a pair of output terminals; a first inductor means connected in series with a capacitor means to form a first series-circuit, this first series-circuit being: (i) connected across said output terminals and (ii) resonant at or near the frequency of said AC voltage; and a second inductor means connected in series with a gas discharge lamp, thereby to form a second series-circuit, this second series-circuit being operable to be connected in parallel with said capacitor means and, when so connected, operative to cause the combination of said first series-circuit and said second series-circuit to be resonant at or near the frequency of said AC voltage; whereby the connection of said series-circuit is accomplished substantially without change in the power factor at which power is drawn from said source, the first series circuit having a first Q factor, the first series circuit in combintion with said second series circuit having a second Q factor, the first Q factor being substantially larger than the second Q factor.