title: COSEL Power Supply, Noise Filter 2025 Product Catalog

Summary

COSEL Power Supply, Noise Filter 2025 Product Catalog

AC-DC Power Supplies PCB Mount TypeInstruction Manual!The specifi ed ripple and ripple noise are measured by the methodintroduced in Fig.2.13.3 FunctionF1R1AC1+Vout50mmMeasuringboard3.1 Input voltage rangeSK1C1(TUHS25)CbcAC2+BC+-BCOscilloscopeBW:100MHz-VoutRCCoCoaxial CableFLoad!The range is from AC85V to AC264V or DC120V to DC370V(please see SPECIFICATIONS for details).!In case of less than AC85V or DC120V, it is possible to operatecontinuously by input voltage derating as shown in ?Derating”.!In cases that conform with safety standard, input voltage range isAC100-AC240V (50/60Hz) and DC120-DC370V.3.2 Overcurrent protectionFig.2.13 Method of Measuring Output Ripple and Ripple noise!When connect the output to FG of an equipment, a noise may becomebig. The noise can be reduced by connecting external fi lterand grounding capacitor on the input side.F1C1R1L1AC1+VoutSK1LoadAC2+BC-BC-VoutC11C12+C13CbcFig.2.14 Recomemended circuit of connect output to FG!Overcurrent protection is built-in and comes into effect over 105%of the rated current.Overcurrent protection prevents the unit from short circuit andovercurrent condition. The unit automatically recovers when thefault condition is cleared.!When the output voltage drops at overcurrent, the average outputcurrent is reduced by hiccup operation of power supply.3.3 Overvoltage protection!The overvoltage protection circuit is built-in and comes into effectat 110% to 160% of the rated output voltage. When the load factoris less than 30%, output voltage may be increased more thanmaximum voltage depending on the failure mode.!Please note that devices inside the power supply might fail whenvoltage more than rated output voltage is applied to output pin ofthe power supply. This could happen when the customer tests theovervoltage performance of the unit.3.4 Isolation!For a receiving inspection, such as Hi-Pot test, increase (decrease)the voltage gradually for a start (shut down). Avoid usingHi-Pot tester with timer because it may generate voltage a fewtimes higher than the applied voltage, at ON/OFF of a timer.3.5 Reducing standby power!A circuit reducing standby power is built in TUHS.(standby power of AC100V input : 0.5W max)The load factor: Io=0-30%, the internal switch element is intermittentoperated, and the switching loss is decreased. The specificationof the Ripple/Ripple Noise changes by this intermittentoperation. The value of the ripple/ripple Noise when intermittentoperates changes in the input voltage and the output current.Please contact us for details.TUHS-18