Electronic photo flash apparatus operating from alternating current circuits of different voltages
Abstract
Abstract ELECTRONIC PHOTO FLASH APPARATUS POWERED BY ENERGY STORED IN CAPACITORS WHICH ARE CHARGED FROM ALTERNATING CURRENT CIRCUITS OR "MAINS." CIRCUITS ARE PROVIDED TO ENABLE THE CAPACITORS TO BE CHARGED TO APPROXIMATELY THE SAME VOLTAGE EACH TIME, EVEN THOUGH AT TIMES THE APPARATUS MAY BE PLUGGED INTO AN ALTERNATING CURRENT CIRCUIT HAVING ONE OF THE STANDARD VOLTAGES (E.G., 110 OR 115 VOLTS) AND AT OTHER TIMES MAY BE PLUGGED INTO AN ALTERNATING CURRENT CIRCUIT HAVING ONE OF THE OTHER STANDARD VOLTAGES SUBSTANTIALLY DOUBLE THE FIRST MENTIONED VOLTAGE (E.G., 220 OR 230 VOLTS). IN ONE EMBODIMENT, A HAND OPERATED SWITCH IS USED, DEPENDING UPON THE VOLTAGE OF THE MAINS INTO WHICH THE APPARATUS IS PLUGGED. IN ANOTHER EMBODIMENT, THE APPARATUS FUNCTIONS AUTOMATICALLY IN RESPONSE TO THE VOLTAGE INTO WHICH IT IS PLUGGED, AND MANUAL ACTUATION OF A SWITCH IS NOT NECESSARY.
Inventors
- 👤 C Tscheuschner
Bibliographic Details
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |