2results about How to "Reduce output voltage" patented technology

The invention provides an analog quantity safety barrier circuit, a safety barrier system and an industrial cabinet. The analog quantity safety barrier circuit comprises a safety side circuit and a danger side circuit which are electrically isolated through transformers, the danger side circuit comprises a first signal coupling unit and a second signal coupling unit, and the input ends of the first signal coupling unit and the second signal coupling unit receive signals from a safety side through corresponding signal transformers respectively; the input ends of the first rectifying and filtering unit and the second rectifying and filtering unit are correspondingly connected to the output ends of the first signal coupling unit and the second signal coupling unit respectively, and the power supply ends receive energy from the safety side through corresponding power supply transformers respectively; and the series boosting unit is configured to take the direct-current output voltage of the first rectifying and filtering unit as the reference ground potential of the second rectifying and filtering unit, so that the output voltages of the first rectifying and filtering unit and the second rectifying and filtering unit are connected in series and superposed to form a composite power supply for supplying power to a dangerous-side field transmitter. According to the analog quantity safety barrier circuit, the power consumption of the analog quantity safety barrier circuit can be reduced.

The utility model relates to circuit board technical field discloses a kind of standby power consumption devices of reducing circuit board, comprising: rectifier filter module, transformer, feedback adjustable resistance group, feedback regulation module and power supply module.The input end of rectifier filter module is connected with external power supply end, and the output end of rectifier filter module is connected with the primary coil of transformer;The output end of feedback regulation module is connected with the primary coil of rectifier filter module and transformer, and the primary coil of transformer is equipped with auxiliary winding voltage port;Feedback adjustable resistance group is connected with auxiliary winding voltage port and the input end of feedback regulation module;The secondary coil of transformer is connected with the input end of power supply module;When determining the current resistance of feedback adjustable resistance group, feedback regulation module adjusts the voltage of auxiliary winding voltage port, to reduce the power supply voltage output by power supply module, to reduce load power consumption, to reduce the standby power consumption of complete machine, facilitate to carry out the test of different power consumption demand, reduce test cost.