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26 Threads found on Smps Testing
hi to all,this av receiver 3d amp,when powered will go on an show "welcome " message and goes to standby,i suspect a fault in the power amp section since it reads +30 and -30 volts and drops.Now since it is a smps power supply and computerised,this may mean at switch on over/under voltage circuits or hardware testing circuit may fail,please i need
Hello to all, i have smps of i/p:230Vac and o/p:12Vdc. the maximum output current is 0.8A. Now i want to test the smps with load connected at o/p by continous keeping smps ON. By calculation, R = V/I, where V=12Vdc and I=0.8A; i connected 15 ohm (2watt) resistor as a load at output side, but after 5min it got burnt. Is my (...)
Hello, We need a 2kW load bank so that we can do full-load-to-no-load transient testing on our 2kW smps. Also, We also need this load bank to load the smps with to see if the smps is stable. As you know, Electronic loads cannot be used for this purpose, because they have an effective capacitance, and that effects the (...)
Laser units are often powered by smps acting in "capacitor discharge unit" (CDU) other words, they are meant to turn on and off. -Its cheaper than making an smps that can drive the full power, because full power is not needed continuously with eg laser diode stacks....they only have to pulse at low duty. If you want to test the smps, p
Hi Everyone. I am now trying to design a smps for 500kHz Full Bridge Class D amplifier. For the Class D amplifier as the load to this smps, it shifts from no load to full load continuously. What are things that I need to consider to go about designing this smps ?
My smps is designed with the help of PIExpert & Its rated for +5V/1A, +24V/500mA. The design is tested with 1st version of PCB design (Bigger one) & its working fine. The same PCB is redesigned for size optimization. Now the PCB is not working. I have assembled 2 PCB of new design & both not working. While testing the output with DSO, the controlle
Hello, I have created a transformer which would be used in my power supply design. I have designed a supply by using just a capacitor of 0.1uF, 400V which is polyster capacitor, a bridge, resistor of 630k/2W in series and then zener diode of 6.3V,1W in series with 330k/1W resistor. Then I have heard that if this circuit will work then we cannot
Hello, We had a 60W offline flyback smps PCB layed out in an extreme rush just to get ?something? ready for a customer by a certain date. (Double sided PCB) We were then expecting the boss to allow us to re-do the PCB with a proper layout, and then test it. However, the boss then said that we must persevere with the badly layed out PCB and try
got an ATX DC-DC PSU M2ATX 160W. It worked well when I first bought it. I've not used it in a long time, and I've never used it for any substantial period of time. Mostly testing ideas. I don't recall it being
Hi everyone, I have done re-engineering work of a product(Microcontroller based dimmer with smps power supply as a single PCB). I designed the PCB and assembled all the components on the PCB. Its turned ON and working. What are the "Hardware Tests" should i do to work the product perfectly? Thanks and Regards, Sundar.A
Hello, Please can you evaluate this method of ensuring that the reading of infra red temperature monitors is correct? (it relates to accurately reading the temperature of components in an smps). Infrared thermometer: When testing an smps, it is essential to do thermal tes
I want to thank you for reading my post in advance on this forum. I appreciate your time, insight, and advice. I have found a lot of information on the internet to help me understand, repair, and fix smps (Switched-mode power supply). I also found out that my used Tektronix 2465DVS oscilloscope is more than enough to help me test smps. In addition
Friends , I Have Attempted To Make a Youtube Video Regarding testing Of Capacitors With Analogue , Digital And ESR Meter .The Main Thing I Wanted To Tell My Indian Electronic Buffs Who Repair Motherboards , LCD , CRT , Laptops ,smps Etc Is How To Use a ESR Meter .I Hope People Who Know Hindi Would Be Able To Comment . The Link -> www.yo
what are the parametrs to be tested while designing an smps..
If i buy a batch of LEDs that are Cree or Osram, or any other type, how do i know that they are really that type? How do i know that they are not cheap, fake imitations from some unknown company? LEDs, and other components , are almost never supplied by the manufacturer, they are supplied by a network of distributors, do we know that all th
Need to test out smps supplies with a phantom load ranging from 100watt to 5kilowatts. Voltages at output are 12V/24V/48VDC only with current limits going to 100Amps .
I have a TV HV transformer and cascade for my 25 kV tester. For 4kV 4W, the solution seems somewhat oversized in my opinion. I rather suggest a reversed off-mains smps transformr driving a Cockcroft Walton multiplier.
is it possible to test a smps transformer to connect directly to the AC No, as already found out by trial. Is the smps transformer is like normal step down transformer It's a step down transformer operating at several 10 kHz. Your question suggests, that you don't have the means to test it, possibly except for m
I wish to do a check on our 41W, isolated flyback power supply to see if the switching FET is always operated within its SOA. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Vin = 410V Max and 370V min. Switching frequency = 67KHz. The switching FET is within the PWM Controller IC. It is the STR2A153D
hello. For 230VAC input , offline flyback transformers (fully isolated), how do you test to see if the transformer provides the necessary degree of isolation between primary and secondary?