RECTIFIER FOR SEVERAL OUTPUT VOLTAGES FOR MULTI-LIMIT MEGOHMMETERS

摘要

The invention relates to the protection of transformers. The purpose of the invention - preventing incorporation rectifier with diodes malfunction. A rectifier for multiple output voltages for mnogopredelnyh megohm meters comprises a bridge with the series connected diodes in each arm, the intermediate terminals of which are connected with contacts of the switch, the protection unit, two optocoupler and two power source contacts of the switch in adjacent arms of the bridge are connected through the sources and the light emitter photocouplers , light-receivers are connected to the protection unit in the new rectifier into several output voltages for mnogopredelnyh megohm meters is that it. optro- provided with additional contact and the power source, the number equal to the number of diodes comprises additional switch contacts which are opened and closed in a sequence and at a predetermined combination relative to each other in each arm of the bridge diodes are connected in series through the contacts of the switch and more power supplies light emitter photocouplers connected in parallel across contacts of the switch diodes, and a plus power supply is connected to a diode cathode, and the negative - to the anode of freshly top iemniki optocouplers are connected to the protection unit 4 and