Electric lamp and discharge devices: systems – Condenser in the supply circuit – Condenser in shunt to the load device and the supply
Patent
1980-01-21
1982-05-18
La Roche, Eugene R.
Electric lamp and discharge devices: systems
Condenser in the supply circuit
Condenser in shunt to the load device and the supply
315151, 315171, 315173, 315240, H05B 4132
Patent
active
043307370
ABSTRACT:
There is disclosed herein an electronic flash system which obviates the need for the typical large capacity main capacitor as the power source for the flashtube. The system includes a conventional flashtube, trigger circuit for ionizing the flashtube and control circuit for turning on and off an electronic switching element which applies the main operating power to the flashtube. The ignition circuit for the flashtube uses a relatively small capacitor which is charged to a high voltage level for first igniting the flashtube and causing it to commence emission of light. Once ignited, a medium voltage power supply supplies the necessary current level for the required length of time to continue the production of the flash of light. The system also enables the use of a relatively small electronic switch as well as a relatively small voltage converter for charging the ignition capacitor.
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La Roche Eugene R.
Vivitar Corporation
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