| 摘要 |
The invention concerns the electrical circuitry of the network section of a dentistry set, which allows connection of the dentistry to network power of different voltage levels, without the necessity of additional application of transformers and changes to the setup of electrical components connected to the network power source. The essence of the invention is that the network power is fed to the terminal (10), which is connected, on the basis of the nominal value of the network power, to the relevant input of the network transformer (13), whereas this input of network transformer (13) must correspond to the supplied network power. Electrical components (1, 2, 3 to k) are connected on the basis of their nominal voltage to the input (4, 5, 6 to n-1) of the network transformer (13), making this circuitry universal for various nominal values of network power.<IMAGE>
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