This may be a dumb question but I'm curious. Is it mainly the schottky's/transistors and transformers?
-
-
Re: What mainly determines a power supplies efficiency?
The Switchers, the PFC Parts (if present), and the secondary rectifiers are the main parts responsible for the efficiency. The secondary rectifiers should have a low voltage drop, and the Transistors (both PFC and the switchers) should have both fast switch times and a low RDS-on (resistance when switched fully on)I love putting bad caps and flat batteries in fire and watching them explode!!
No wonder it doesn't work! You installed the jumper wires backwards
Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium
Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 Pro -
Re: What mainly determines a power supplies efficiency?
Doesn't the topology affect efficiency a lot?Comment
-
Re: What mainly determines a power supplies efficiency?
Yes, it does. I was referring to parts which were easily replaceable.I love putting bad caps and flat batteries in fire and watching them explode!!
No wonder it doesn't work! You installed the jumper wires backwards
Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium
Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 ProComment
-
Re: What mainly determines a power supplies efficiency?
Thanks for the reply! I wonder if you could get an old half bridge up to 80% efficiency
Comment
-
Hi,
Back after a long hiatus with some old power supplies that need repairing. I've recently picked up a couple of 386SX systems, two 486DX systems, a SiliconGraphics Indy and an iMac G3 that either have verified leaking capacitors in their power supplies, or are likely to in the near future. For the sake of simplicity, instead of tackling all at once, I'm starting with the 386's and one of the 486's.
The 386's power supplies are Seasonic SS4040A's, with caps that are visibly leaking, and 9 replacement caps per unit are required. Most appear to be from the Rubycon... -
All,
I recently purchased for a colleague and myself two used HP Docking Stations. They are for home use and are exact model as the ones we use at work for our laptops. We are both Software Developers.
Anyways these docks are HP Model 5TW10UT#ABA.
Unfortunately they did not come with there Power supplies (PSU) and I got them reasonable from eBay.
I purchased 2 new from Amazon After Market Power Supplies(PSU). Same Voltage and Same Amperage and in fact it mentions on the Amazon page they are supported for these docks as well.
h... -
Here is the eBay website link where I bought them from
https://www.ebay.com/itm/276135936202
I have been waiting for these switching power supplies to come well they came in today so I took one apart and found that it Capcon and EIite and another brand that is on my list of capacitors to replace on site it has several 0.47uf @ 50 volts ESR value twice the reading of a new one 10 UF @ 50 volts almost twice the ESR value of a new one 47 UF @ 59 volts with double the ESR value 100 UF almost the same as a new one it got replaced for good measure Iit was a brand if I see them... -
ISL95836 Laptop PWM Controller Datasheet
The ISL95836 Pulse Width Modulation (PWM) controller IC
provides a complete solution for IMVP-7/VR12 compliant
microprocessor and graphic processor core power supplies. It
provides the control and protection for two Voltage Regulators
(VRs). The first VR, typical for Vcore, incorporates 2 integrated
drivers and can operate in 3-, 2- or 1-phase configurations. The
second VR, typical for graphics, incorporates 1 integrated
driver and can operate in 2- or 1-phase configurations. The two
VRs share...11-05-2024, 03:31 PM -
Back in 2020 i bought a (2nd hand) compact ATX psu to replace my current one. My PC case only fits very short ATX power supplies so i didn't really have the choice of buying a decent 80Plus unit. The current unit is a modded YoungYear unit that i made a thread about a while ago:
A "nice" YoungYear unit? - Badcaps
The "new" unit is a KDM-M6480 480W psu, the 480W number is a typical KDM bullshit claim of course, but the 24A rating on the 12V rail seemed reasonable and the "Active PFC" claim gave me a bit of hope that this was going to be decent-ish....
Comment