Module with isolated analogue inputs having low leakage current

摘要

The module has multiple input pathways, each isolated with the aid of an optical isolation static relay (1a, 1b, 2a, 2b, 3a, 3b, 4a, 4b) e.g. OptoMos (RTM: customer premises equipment) controlled selectively with the aid of a control unit (6). The module comprises a multiplexer (5) furnished with multiple channels (5a-5h), each controlled to open and to close. The channel of the multiplexer is placed in series with isolated input pathways (1-4) of the module. The multiplexer is of low-voltage analogue type comprising a control unit (7). An independent claim is also included for a programmable controller.