| 摘要 |
The electronic analogue-to-digital converter for measuring direct voltage and current designed to function together with a chipset, with galvanic separation between input and output circuits, containing an input circuit connected with a filter through an analogue multiplexer. The output of the filter is connected with the input of the analogue-to-digital converter. Converter data outputs are connected with data inputs of three memory chips through a second transoptor galvanic separation system. Data outputs of the memory chip 3 are directly connected with inputs of a data buffer which are also linked with outputs of the data multiplexer, while the multiplexer inputs are connected with data outputs of memory chips 1 and 2. Outputs of the data buffer are connected with control inputs of the analogue multiplexer through memory chip 4, a third transoptor galvanic separation system and a controller. An output of an address decoder is connected with the memory chip 4, the data multiplexer, the data buffer and an interrupt multivibrator. Additionally, the address decoder, the data buffer and the interrupt multivibrator are connected with the chipset. The circuit is distinctive in that control outputs (LSD), (NSD) and (MSD) of the analogue-to-digital converter (A/C) are connected with data-saving inputs of the three systems.<IMAGE>
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