Method and circuit for operating an electrical flash-tube
OwnerJohn Hobart Zentmyerinventor
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Abstract
A relatively infinitely incremental mode of obtaining any desired brightness of flash from an electrically operable flash-tube is attained by employing plural capacitors, each having a charging source of selectable voltage level and a unilaterally conductive element between the capacitor and the flash-tube. The unilaterally conductive element is poled to pass the charge on the associated capacitor during the discharge cycle regardless of the voltage of the charge on other of the plural capacitors involved.
Claims9
The method of variably adjusting the brightness of the flash of an electrical flash tube which comprises the steps of;
- a. charging plural capacitors to different electrical potentials, such that the charge on each capacitor is sufficient to produce significant light from said flash tube
- b. triggering a discharge in an electrical flash-tube, and
- c. discharging each of said plural capacitors through individual unidirectionally conductive elements into said flash-tube to produce significant light therefrom.
A flash-tube electrical circuit, comprising;
- a. a triggerable electrical flash-tube (1 or 38),
- b. plural separate capacitors (4,etc.,20,21,etc.) having comparable capacitances,
- c. separate means to charge a capacitor (5,etc.,23,etc.), individually connected to each said separate capacitor, at least one of said means being variable, and
- d. separate unidirectionally conductive means (8,etc.,22,25,etc.) individually connected to each said separate capacitor and collectively to said flash-tube,
- whereby, upon said flash-tube being triggered, each said separate capacitor is discharged through a said unidirectionally conductive means and through said flash-tube.
Dependencies are inferred from the claim text.