title: COSEL Power Supply, Noise Filter 2025 Product Catalog

Summary

COSEL Power Supply, Noise Filter 2025 Product Catalog

AC-DC Power Supplies Enclosed TypeInstruction Manual1.7 Output Ripple and Ripple Noise!The measuring method Fig.1.1 is recommended because the outputripple noise may be infl uenced by measurement environment.Table 1.2 Specifi cations of remote ON/OFF (RC-RCG)OutputBetween RC and RCGONL level (0 to 0.5V) or openOFFH level (4.5 to 15V)Oscilloscope+Vout-Vout150mmC1 +LoadTable 1.3 Specifi cations of remote ON/OFF (Case of Fig.1.3)Connection methodFig.1.3 (a)Fig.1.3 (b)Fig.1.3 (c)Output ONOutput OFFBase pinRCGAUXGRCG, AUXGBw:20MHzDifferential probeC1 :22μF of Aluminum electrolytic capacitorFig.1.1 Measuring method for Ripple and Ripple NoiseRemarks :When GND cable of probe with fl ux of magnetic force from powersupply are crossing, ripple and ripple noise might not measurecorrectly.Please note the measuring environment.PowerSupplyProbefPowerSupply150mmfDifferential probe(a) (b) (c)AUX12VRi=1360ΩRCR1※112VRi=1360ΩRC12VRi=1360ΩRCtypVcctyptypRCGRCGRCGAUXGSWAUXAUXGSWRb=1kΩAUXAUXGFig.1.3 Examples of connecting method for remote ON/OFF*1 If an external voltage (VCC) is within the range of 4.5 - 15V, acurrent limiting resistor R1 is not necessary. If it exceeds 15V,connect the current limiting resistor R1.To calculate a current limiting resistance value, please use thefollowing formula.SWBad exampleGood exampleR1[W]=Vcc-(1.1+RiX0.005)0.005Ri : 1360[W]Vcc : External power supplyFig.1.2. Example of measuring output ripple and ripple noise1.8 Remote ON/OFF!A unit has a remote ON/OFF function.!The remote ON/OFF function can be operated by sending signalsto CN3. Please see Table 1.2 and Table 1.3 for specifi cations andFig.1.3 for connecting examples.!Please note the following when using the remote ON/OFF function.1The output stops when a current fl ows to RC.* Reverse logic option (-R) is available. Refer to section 5. Option.2The current fl own to RC is a 15mA max.3If the output voltage is turned off through the remote ON/OFFcircuit, the WRN signals and the PG signals keep”Low”.4Description in this section is based on the assumption that youwill use one unit alone. If you are planning to use the units inparallel operation or use multiple units for a single system,please check necessary voltage and current values.!Please wire carefully. If done incorrectly, the internal componentsof the unit may be damaged.!Remote ON/OFF circuits (RC and RCG) are isolated from input,output, FG and various function terminals.1.9 Remote Sensing!A unit has a built-in remote sensing function.When remote sensing is not used, +S and -S can be left open.!Please see Fig. 1.4 if you use the remote sensing function.!When you use the remote sensing function, please wire from +Sand -S on CN1 or CN2. Harnesses are sold separately.For details, refer to the item of option parts.!When you use the remote sensing, please note the followings.1Wire carefully. When a connection of a load line becomes loose(due to such factors as loose screw), the load current fl ows tothe sensing line and internal circuits of the power supply may bedamaged.2Use a suffi ciently thick wire to connect between the power supplyand the load and keep the line drop at 0.3V or below.3Use a twisted pair wire or a shielded wire as the sensing line.4Do not draw the output current from +S or -S.5When the remote sensing function is used, the output voltage ofthe power supply may show an oscillating waveform or the outputvoltage may dramatically fl uctuate because of an impedanceof wiring and load conditions.Please check and evaluate carefully before using the remotesensing function.If the output voltage becomes unstable, we suggest you to try toconnect C1, C2, C3, R1, R2 and R3.6If the output voltage is unstable because the sensing line islong, adjust R1 and R2. Please contact us for details.HCA-9