Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch in the primary circuit of the supply...
Patent
1987-04-24
1988-07-05
Moore, David K.
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Periodic switch in the primary circuit of the supply...
315241S, 363 19, 363131, H05B 4129, H05B 4134
Patent
active
047557230
ABSTRACT:
A variable frequency DC to DC converter generates a pulsed, variable magnitude output voltage where the frequency of the pulsed output voltage varies with changes in the magnitude of the output voltage. An energy storage capacitor is coupled between the converter coupled inductor and strobe flash lamp or other gaseous discharge tube and is periodically discharged through the flash lamp. A variable impedance device in the form of a capacitor is coupled in series with the flow of current from the coupled inductor into the energy storage capacitor to provide a low impedance current flow path when energy is transferred from the coupled inductor into the capacitor and to provide a high impedance current flow path between the converter DC voltage input terminals and the energy storage capacitor when energy is transferred from the capacitor into the strobe flash lamp.
REFERENCES:
patent: 3331033 (1968-07-01), Johnston
patent: 3417306 (1968-12-01), Knak
patent: 3515974 (1970-06-01), Stich
patent: 3523235 (1970-08-01), Schaefer
patent: 4135233 (1979-01-01), Seiersen
patent: 4321507 (1982-03-01), Bosnak
patent: 4573112 (1986-02-01), Nomata et al.
patent: 4595974 (1986-06-01), Lethellier
patent: 4613797 (1986-09-01), Eggess et al.
patent: 4682081 (1987-07-01), Sikora
Moore David K.
Razavi Michael
Tomar Electronics, Inc.
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