I can have 3a, 5A or 13A Fuse. Of course there's a variety, you think every PC should have the same size fuse just because its called a PC. Hopefully someone here can point me in the right direction. The fuse is usually located on one corner of the power supply. (From 8am-5pm EST M-F) My mistake was disconnecting it before powering down the computer. It could be the power supply needs changing. What uses 13A/3kW anyway? As jw0752 said it has lethal voltages and the first stage they rectify the mains voltage, filter it and then chop it to arrive at the final voltage, or voltages.. As far as the mains is concerned the PSU is your PC. Please enable cookies on your browser and try again. In general, for a switching-mode power supply, the fuse current rating should be selected at the next convenient current greater than the maximum input current of the switcher. What fuse should there be in the plug for a 130W PSU. Of course there's a variety, you think every PC should have the same size fuse just because its called a PC. If you replace it and attach that power supply to the mainboard, you could very well blow out the mainboard. Remember that fuse blew for a reason. Power Supply/Charger with Access power controllers - 8 fused outputs are selectable for 12VDC @ 4 amp or 24VDC @ 3 amp, outputs are individually selectable for Fail-Safe or Fail-Secure operation or as dry form inCin contacts, fire alarm disconnect is sele Power supplies usually cost around $60 USD, but they tend to be more expensive if … Some do have replaceable fuses. The fuse rating can be calculated by dividing the power used by the appliance by the voltage going into the appliance. If their voltage is normal, the three groups of lights (+ 12V, + 3.3, + 5V) will be on. The service requires full cookie support in order to view this website. I (Amps) = P (Watts) ÷ V (Voltage). I have not removed or opened the power supply, but there's no fuse apparent from the outside. The fuse of any equipment is rated to its peak power consumption and that includes start up surge current and operating efficiency. I=P/V = 24/220 = 0.11 amps. Generally, fuse ac voltage ratings coincide with the utility supply, e.g., 110V, 240V, 415V, etc. All the mains fuse does is isolate the PSU. why not work out the current draw on everything on your pc/printer etc and choose the fuse accordingly. The general power rating on desktops PC seems to be around 260 to 300 watts which to me surgests a 5-7-8 amp fuse needed but I note that when a PC is shipped from new In the box it usually comes with a 10 amp fuse in the plug which kind of contradics things. So asking what my own personal PSU is, is no help. It's rated at 6.67A. However as I said there are only three choices. Either a crappy PSU, or the rest of the system was drawing too much power, or crappy power from the wall. Most of the ones I have seen have fuses soldered to the power board. i used the lasers from the dvd burner to make a laser pistol. If you have … The next most important rating for your 3D printer power supply is output current. It blew the fuse for a reason. Hence motor fuse rating formula, Learn More: What is cable gland? Please enable JavaScript on your browser and try again. What's the power supplies peak wattage rating and efficiency? Also you dont state if it is the fuse on the computer lead or a fuse in an extension lead with multiple appliances running, if it is the computer lead then check the makers website and if the fuse is correct then email them as most are quite helpful. there is no right answer on what fuse everyone should use. Finished Project. The fuse rating can be calculated by dividing the power used by the appliance by the voltage going into the appliance. This process is automatic. www.powerelectronics.com is using a security service for protection against online attacks. The service requires full JavaScript support in order to view this website. www.powerelectronics.com is using a security service for protection against online attacks. Power supply or electricity plays a vital role in the functioning of a computer system. Fuse Rating Calculation for Motor A fuse for a machine is rated on the load that the machine carries when running. In practicality, consider the average maximum draw of any particular generic groups PSU's and match it to nearest fuse above rated just above said average. The total 12 V rating on the power supply must be higher than the current required by such devices so that the PSU can fully serve the system when its other 12 V system components are taken into account. Pulling the drive's power connection, I got a spark and the computer shut down. As previously stated, this will be the limiting factor for your heated bed and the total number of hot ends you are operating. This site uses cookies. Inrush current will clear a closely rated fast blow fuse. An amp (e.g., 5 ohms on +5) should be enough. [Beep Alarm] -- When your power supply test value is beyond normal range, the Power Supply Tester would issue a buzzer alarm, Easy to Know NOTE: The voltage of IDE / SATA / P6 / P8 interface is displayed by the three lights on the left of the power tester. Use an ohm meter to check the fuse. If the fuse tests good, you can put the power supply back together and reinstall it in the PC to test it.
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