The radioisotope power sources based on the principle of the tritium beta-radiation power conversion sequentially into light and electric energy have been investigated. The spectral characteristics of used radio luminescent light sources, the spectral and electric characteristics of semiconductor photo converters have been analyzed. The experimental nuclear battery cells have been developed, based on which the battery with the short circuit current values U = 2.5V and I=1.2 µA at no-load voltage, respectively, has been assembled. The battery can be used as a power source for used household electronic devices with low power consumption.
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