title: COSEL Power Supply, Noise Filter 2025 Product Catalog

Summary

COSEL Power Supply, Noise Filter 2025 Product Catalog

AC-DC Power Supplies Enclosed TypeInstruction Manual1.6 Output Ripple and Ripple Noise!Output ripple noise may be infl uenced by the measuring environment.The measuring method shown in Fig. 1.1 is recommended.!Output ripple and ripple noise is the value measured by the methodshown in Fig.1.1.+Vout-VoutOsiloscope/Ripple noise meterBw:20MHzC1C2150mm+LoadDifferential probeC1 : Film capacitor 0.1μFC2 : Aluminum electrolytic capacitor 22μFFig.1.1 Measuring method of Ripple and Ripple NoiseRemarks :When measuring output ripple or ripple noise with an oscilloscope,do not have the oscilloscope’s GND cable cross the magnetic fl uxfrom the power supply. Otherwise there may be electrical potentialgenerated on the GND cable and the measurement result may notbe accurate.150mm1.9 Low Power Consumption? PJA100F, PJA150F!These power supplies are designed for low power consumption at noload. (No load power consumption: 1.5W typ)!When the load factor is 0- 30%, the switching power loss is reduced byburst operation, which will cause ripple and ripple noise to go beyondthe specifications.!Ripple and ripple noise during burst operation will change dependingon the input voltage and the output current. Consult us for advice onhow to reduce ripple and ripple noise.!When there is a need to measure the stand-by power consumption,measure it by using the average mode of the tester. The measuringenvironment may influence the result. Consult us for more details.1.10 Remote ON/OFF!The ?R option is available for these models. With the ?R option,remote ON/OFF is possible. See“6 Options and Others”for moredetails.1.11 Remote Sensing? PJA100F, PJA150F, PJA300F!These models do not have the remote sensing function.? PJA600F, PJA1000F, PJA1500F!The ?W option is available. With the ?W option, remote sensing ispossible. See“6 Options and Others”for more details.Bad exampleGood exampleFig.1.2 Example of measuring output ripple and ripple noise1.7 Output Voltage Adjustment!The output voltage can be adjusted within the specifi ed range byturning the built-in potentiometer clockwise (up) or counterclockwise(down).!Please operate the potentiometer slowly.1.12 LV Alarm? PJA100F, PJA150F, PJA300F!These models do not have the LV alarm function.? PJA600F, PJA1000F, PJA1500F!The ?W option is available. With the ?W option, the power supplycan give an LV alarm. See“6 Options and Others”for more details.? PJA300F, PJA600F, PJA1000F, PJA1500F!With the option ?V, the power supply comes with an external potentiometerinstead of a built-in potentiometer. (See 6 Options andOthers).1.8 Isolation!For a receiving inspection, such as Hi-Pot test, gradually increase(decrease) the voltage for the start (shut down). Avoid using Hi-Pot tester with the timer because it may generate voltage a fewtimes higher than the applied voltage, at ON/OFF of a timer.PJA-19