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US 4,054,815 AGranted
Circuit arrangement for igniting a gas discharge flash tube
AssigneeSiemens Aktiengesellschaft
InventorsErnst-Ludwig Hoene, Werner Rech, Josef Zimlich
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AssigneeSiemens Aktiengesellschaft
InventorsErnst-Ludwig Hoene, Werner Rech, Josef Zimlich
Estimating the term…
A circuit arrangement for igniting a gas discharge flush tube in which the flash tube is arranged in the circuit of a voltage source in parallel to a flash capacitor and the flash tube is connected to an ignition voltage generator which emits high voltage pulses during operation of the circuit arrangement. The ignition voltage generator has a low impedance, in particular low inductance, and the high voltage pulses produced thereby initiate ignition of and at least approximately adiabatically head a plasma channel in the flash tube. The ignition voltage generator is fundamentally capacitive. In one embodiment of the invention it comprises a second voltage source for charging a second capacitor connected in parallel with the flash tube, whereas in another embodiment the ignition voltage generator contains a piezoelectric crystal or a pyro electric crystal.
A circuit arrangement for igniting a gas discharge flash tube which has only two electrodes, comprising:
In a photo copying machine of the type in which a gas discharge flash tube, which has only two electrodes, is ignited to cause copying of an original in the copying process, the improvement therein comprising:
A circuit arrangement for igniting a two-electrode gas discharge flash tube comprising:
Dependencies are inferred from the claim text.