(EP785823-A1)      The device includes an outlet from which material to be charged can be sprayed, and a high voltage generator (28). Also provided are a housing (10) including a compartment (14) in which material to be sprayed can be stored or for reception of a cartridge (16) contg. material to be sprayed. The material has properties, e.g. resistivity, suitable for electrostatic spraying. The generator is a solid state device with a large array of discrete voltage producing elements, e.g. photovoltaic elements.    The photovoltaic elements are serially connected to produce a high voltage output in response to irradiation by light or other electromagnetic radiation such as IR. Irradiation is provided by a radiation producing device such as a light emitting diode LED (40) forming part of a low voltage circuit including user operable switch (44) and low voltage source. The spraying device may be suitable for hand held use or portable. Pref. a removable cap is provided for selectively exposing and shielding the array to/from ambient radiation.    USE/ADVANTAGE -   Also for spraying of cosmetics, room fragrance, deodorants, insecticides and pesticides, dispensing of medical formulations for e.g. skin treatment. Photovoltaic cells may be mfr. to common design and then customised. No bulky battery is required.    (JP10506838-W)      The device includes an outlet from which material to be charged can be sprayed, and a high voltage generator (28). Also provided are a housing (10) including a compartment (14) in which material to be sprayed can be stored or for reception of a cartridge (16) contg. material to be sprayed. The material has properties, e.g. resistivity, suitable for electrostatic spraying. The generator is a solid state device with a large array of discrete voltage producing elements, e.g. photovoltaic elements.    The photovoltaic elements are serially connected to produce a high voltage output in response to irradiation by light or other electromagnetic radiation such as IR. Irradiation is provided by a radiation producing device such as a light emitting diode LED (40) forming part of a low voltage circuit including user operable switch (44) and low voltage source. The spraying device may be suitable for hand held use or portable. Pref. a removable cap is provided for selectively exposing and shielding the array to/from ambient radiation.    USE/ADVANTAGE -   Also for spraying of cosmetics, room fragrance, deodorants, insecticides and pesticides, dispensing of medical formulations for e.g. skin treatment. Photovoltaic cells may be mfr. to common design and then customised. No bulky battery is required.    (US5992771-A)      The device includes an outlet from which material to be charged can be sprayed, and a high voltage generator (28). Also provided are a housing (10) including a compartment (14) in which material to be sprayed can be stored or for reception of a cartridge (16) contg. material to be sprayed. The material has properties, e.g. resistivity, suitable for electrostatic spraying. The generator is a solid state device with a large array of discrete voltage producing elements, e.g. photovoltaic elements.    The photovoltaic elements are serially connected to produce a high voltage output in response to irradiation by light or other electromagnetic radiation such as IR. Irradiation is provided by a radiation producing device such as a light emitting diode LED (40) forming part of a low voltage circuit including user operable switch (44) and low voltage source. The spraying device may be suitable for hand held use or portable. Pref. a removable cap is provided for selectively exposing and shielding the array to/from ambient radiation.    USE/ADVANTAGE -   Also for spraying of cosmetics, room fragrance, deodorants, insecticides and pesticides, dispensing of medical formulations for e.g. skin treatment. Photovoltaic cells may be mfr. to common design and then customised. No bulky battery is required.    (EP785823-B1)      The device includes an outlet from which material to be charged can be sprayed, and a high voltage generator (28). Also provided are a housing (10) including a compartment (14) in which material to be sprayed can be stored or for reception of a cartridge (16) contg. material to be sprayed. The material has properties, e.g. resistivity, suitable for electrostatic spraying. The generator is a solid state device with a large array of discrete voltage producing elements, e.g. photovoltaic elements.    The photovoltaic elements are serially connected to produce a high voltage output in response to irradiation by light or other electromagnetic radiation such as IR. Irradiation is provided by a radiation producing device such as a light emitting diode LED (40) forming part of a low voltage circuit including user operable switch (44) and low voltage source. The spraying device may be suitable for hand held use or portable. Pref. a removable cap is provided for selectively exposing and shielding the array to/from ambient radiation.    USE/ADVANTAGE -   Also for spraying of cosmetics, room fragrance, deodorants, insecticides and pesticides, dispensing of medical formulations for e.g. skin treatment. Photovoltaic cells may be mfr. to common design and then customised. No bulky battery is required.