Utilities and reference books.
- Directory in .chm format. The author of this file is Pavel Andreevich Kucheryavenko. Most of the source documents were taken from the website pinouts.ru - brief descriptions and pinouts of more than 1000 connectors, cables, adapters. Descriptions of buses, slots, interfaces. Not only computer equipment, but also cell phones, GPS receivers, audio, photo and video equipment, game consoles and other equipment.The program is designed to determine the capacitance of a capacitor by color marking (12 types of capacitors).
Database on transistors in Access format.
Power supplies.
Contact table of the 24-pin ATX power supply connector (ATX12V) with ratings and color coding of wires
| Comte | Designation | Color | Description | |
|---|---|---|---|---|
| 1 | 3.3V | Orange | +3.3 VDC | |
| 2 | 3.3V | Orange | +3.3 VDC | |
| 3 | COM | Black | Earth | |
| 4 | 5V | Red | +5 VDC | |
| 5 | COM | Black | Earth | |
| 6 | 5V | Red | +5 VDC | |
| 7 | COM | Black | Earth | |
| 8 | PWR_OK | Grey | Power Ok - All voltages are within normal limits. This signal is generated when the power supply is turned on and is used to reset the system board. | |
| 9 | 5VSB | Violet | +5 VDC Standby voltage | |
| 10 | 12V | Yellow | +12 VDC | |
| 11 | 12V | Yellow | +12 VDC | |
| 12 | 3.3V | Orange | +3.3 VDC | |
| 13 | 3.3V | Orange | +3.3 VDC | |
| 14 | -12V | Blue | -12 VDC | |
| 15 | COM | Black | Earth | |
| 16 | /PS_ON | Green | Power Supply On. To turn on the power supply, you need to short-circuit this contact to ground (with a black wire). | |
| 17 | COM | Black | Earth | |
| 18 | COM | Black | Earth | |
| 19 | COM | Black | Earth | |
| 20 | -5V | White | -5 VDC (this voltage is used very rarely, mainly to power old expansion cards.) | |
| 21 | +5V | Red | +5 VDC | |
| 22 | +5V | Red | +5 VDC | |
| 23 | +5V | Red | +5 VDC | |
| 24 | COM | Black | Earth |
Power supply diagram ATX-300P4-PFC (ATX-310T 2.03).
ATX-P6 power supply diagram.
API4PC01-000 400w power supply diagram manufactured by Acbel Politech Ink.
Power supply diagram Alim ATX 250Watt SMEV J.M. 2002.
Typical diagram of a 300W power supply with notes on the functional purpose of individual parts of the circuit.
Typical circuit of a 450W power supply with the implementation of active power factor correction (PFC) of modern computers.
API3PCD2-Y01 450w power supply diagram manufactured by ACBEL ELECTRONIC (DONGGUAN) CO. LTD.
Power supply circuits for ATX 250 SG6105, IW-P300A2, and 2 circuits of unknown origin.
NUITEK (COLORS iT) 330U (sg6105) power supply circuit.
NUITEK (COLORS iT) 330U power supply circuit on the SG6105 chip.
NUITEK (COLORS iT) 350U SCH power supply circuit.
NUITEK (COLORS iT) 350T power supply circuit.
NUITEK (COLORS iT) 400U power supply circuit.
NUITEK (COLORS iT) 500T power supply circuit.
PSU circuit NUITEK (COLORS iT) ATX12V-13 600T (COLORS-IT - 600T - PSU, 720W, SILENT, ATX)
PSU diagram CHIEFTEC TECHNOLOGY GPA500S 500W Model GPAxY-ZZ SERIES.
PSU circuit Codegen 250w mod. 200XA1 mod. 250XA1.
Codegen 300w mod power supply circuit. 300X.
PSU circuit CWT Model PUH400W.
PSU diagram Delta Electronics Inc. model DPS-200-59 H REV:00.
PSU diagram Delta Electronics Inc. model DPS-260-2A.
Power supply circuit DTK Computer model PTP-2007 (aka MACRON Power Co. model ATX 9912)
DTK PTP-2038 200W power supply circuit.
EC model 200X power supply circuit.
Power supply diagram FSP Group Inc. model FSP145-60SP.
PSU standby power supply diagram FSP Group Inc. model ATX-300GTF.
PSU standby power supply diagram FSP Group Inc. model FSP Epsilon FX 600 GLN.
Green Tech power supply diagram. model MAV-300W-P4.
Power supply circuits HIPER HPU-4K580. The archive contains a file in SPL format (for the sPlan program) and 3 files in GIF format - simplified circuit diagrams: Power Factor Corrector, PWM and power circuit, autogenerator. If you have nothing to view .spl files, use diagrams in the form of pictures in .gif format - they are the same.
Power supply circuits INWIN IW-P300A2-0 R1.2.
INWIN IW-P300A3-1 Powerman power supply diagrams.
The most common malfunction of Inwin power supplies, the diagrams of which are given above, is the failure of the standby voltage generation circuit +5VSB (standby voltage). As a rule, it is necessary to replace the electrolytic capacitor C34 10uF x 50V and the protective zener diode D14 (6-6.3 V). In the worst case, R54, R9, R37, U3 microcircuit (SG6105 or IW1688 (complete analogue of SG6105)) are added to the faulty elements. For the experiment, I tried installing C34 with a capacity of 22-47 uF - perhaps this will increase the reliability of the duty station.
Power supply diagram Powerman IP-P550DJ2-0 (IP-DJ Rev:1.51 board). The standby voltage generation circuit in the document is used in many other models of Power Man power supplies (for many power supplies with a power of 350W and 550W, the differences are only in the ratings of the elements).
JNC Computer Co. LTD LC-B250ATX
JNC Computer Co. LTD. SY-300ATX power supply diagram
Presumably manufactured by JNC Computer Co. LTD. Power supply SY-300ATX. The diagram is hand-drawn, comments and recommendations for improvement.
Power supply circuits Key Mouse Electroniks Co Ltd model PM-230W
Power supply circuits L&C Technology Co. model LC-A250ATX
LWT2005 power supply circuits on the KA7500B and LM339N chip
M-tech KOB AP4450XA power supply circuit.
PSU diagram MACRON Power Co. model ATX 9912 (aka DTK Computer model PTP-2007)
Maxpower PX-300W power supply circuit
PSU diagram Maxpower PC ATX SMPS PX-230W ver.2.03
Power supply diagrams PowerLink model LP-J2-18 300W.
Power supply circuits Power Master model LP-8 ver 2.03 230W (AP-5-E v1.1).
Power supply circuits Power Master model FA-5-2 ver 3.2 250W.
Microlab 350W power supply circuit
Microlab 400W power supply circuit
Powerlink LPJ2-18 300W power supply circuit
PSU circuit Power Efficiency Electronic Co LTD model PE-050187
Rolsen ATX-230 power supply circuit
SevenTeam ST-200HRK power supply diagram
PSU circuit SevenTeam ST-230WHF 230Watt
SevenTeam ATX2 V2 power supply circuit
Moreover, the price of some is slightly more expensive than the power supply itself. This is most likely due to its low price and power sufficient to power not only an office system unit, but also an average gaming system.
The power supply comes in a black cardboard box with orange lettering. The kit includes a power cable, mounting screws, and several short zip ties.
The box contains minimal information: the number and purpose of the pads on the cables, voltage graphs along the lines, a table of currents, and that’s all. Of course, I would like greater characteristics: ATX standard, efficiency, the presence of APFC, noise indicators, there is not even a country of origin.
We open the box - a very sharp, unpleasant smell from plastic or paint. The block itself was never ventilated, but it was better to throw the box away immediately.
The body is made of unpainted metal less than 1 mm thick. A 120 mm fan is hidden behind the grill grill. On the front side there is a fine honeycomb grid, a power connector and a power button, a sticker - 230v. There is a sticker on the case indicating the manufacturer: Chinese company R-Senda.
The set of cables is minimal to provide power to a budget assembly.
The distance to the main ATX connector is 24 pin - 42 cm, the connector is 20 + 4 pin, this cable is the only one braided for two-thirds of the length. The remaining wires are fastened with ties in one place near the connectors.
to 4 pin processor socket - 43 cm
to the PCI-E 6+2pin video card power connector - 51 cm,
two cables for connecting SATA, the first has one connector, the second has two more - 52 cm to the first, and 20 cm to the second, all connectors are straight.
and two cables with four Molex connectors - 38 cm, plus 14 cm to the second, and on the second another 14 cm to the FDD power connector
The wires are marked 18AWG, soft - there will be no problems with installation. The length is enough for normal installation in a case with a top-mounted power supply.
The Super Fan model SDF12025H12S with a plain bearing is responsible for cooling. It is connected to the board via a 2-pin connector. So if there is a noise problem, it will be easy to replace. True, to do this you will have to damage the warranty sticker.
The rotation speed is adjusted depending on the temperature inside the power supply.
At the input there is a separate board with part of the filters.
There is a permanent fuse.
There is no power corrector. But maybe this is for the better; in office installations it will work without problems with any UPS.
There is a sticker on the case stating that the power supply is capable of operating within a voltage range of 220-240 V, which is very low, especially for our networks, so again, I repeat, it is better to connect via a UPS. There are no identification markings on the board.
There are two input capacitors, 200 volt 1000 µF each from Teapo LW series, designed for a temperature of 85 °C. This is a well-known company for the production of capacitors, but unfortunately, capacitors designed for Tmax = 85°C, as a rule, have a shorter lifespan, and are now practically not produced.
The power semiconductor components are located on two curved and perforated aluminum radiators at the top.
Voltage stabilization is group, one choke is responsible for stabilizing the voltage +3.3 V, and the second is responsible for simultaneously +5 V, +12 V and -12 V.
At the output there are capacitors from Asia "X
On the reverse side we see quite high-quality soldering.
I checked the power supply on my computer; this cannot be called a full-fledged test (especially after the review of the power supply from Zephon), after all, it is not a test laboratory:
Motherboard - MSI Z77A-G43
Processor – Core i7 2600K
Memory – two 4GB sticks
Video card – Palit GTX460
2 hard drives and one SSD
The video card has two 6-pin power connectors, so the second connector had to be connected via an adapter. The motherboard has an 8-pin processor power supply, but it started without problems on a 4-pin contact.
The system consumes just over 300 W under load, so there should be enough power on the +12V line. By the way, it is divided into two virtual lines.
I ran four tests in total:
1 – offline
2 – connected to the computer without load
3 - OSST program in power supply test mode
4 – when overclocking the CPU to 4 GHz
The tests were carried out using a Chinese-made digital multimeter for 150 rubles).
As we can see from the graphs, all voltages are within normal limits, and the power supply copes well with such a fairly productive system. In addition to test programs, I played with toys. Although, to guarantee peace of mind, it is still better to take a power supply with a power reserve for such a system.
The fan turned out to be noisy; when connected autonomously without load, it was not audible, but when connected to a computer, the noise from the propeller drowned out all the other fans in the case.
Budget-friendly, well-made power supply. Quite reliable, time-tested.
It has practically no competitors in its price category.
By the way, I have already met with this power supply earlier, about which I had a question. The computer has been running for two years under extreme conditions). Pulls i3 and HD 6770, connected to the network without a UPS, with a voltage of 180-200V most of the time. A year ago I cleaned it of a huge layer of dust; the computer was glitching, but after cleaning it continued to work successfully.
I think the use of this model in ready-made assemblies, and in cases with a power supply included, is quite justified. But if you are assembling a system unit yourself, then it is better to take a closer look at other models.
Pros:
Low price
Time-tested reliability
Compliance with the declared characteristics
No voltage drops under load
Minuses:
Little information on the box
Noisy fan
Insufficient number of connectors
Unpleasant smell
Thanks to DNS for the opportunity to learn new devices, develop, and communicate with like-minded people.
Sometimes in such reviews, your discussions of the device in the comments are more valuable than the text of the review itself. And it pleases!
If your computer's power supply fails, do not rush to get upset; as practice shows, in most cases repairs can be done on your own. Before moving directly to the methodology, we will consider the block diagram of the power supply and provide a list of possible faults; this will significantly simplify the task.
The figure shows an image of a block diagram typical for switching power supply system units.
Designations indicated:
To carry out repairs, we will also need to know the pinout of the main power connector, it is shown below.
To start the power supply, you need to connect the green wire (PS_ON#) to any black zero wire. This can be done using a regular jumper. Note that some devices may have color markings that differ from the standard ones; as a rule, unknown manufacturers from the Middle Kingdom are guilty of this.
It is necessary to warn that without load significantly reduces their service life and can even cause breakdown. Therefore, we recommend assembling a simple load block; its diagram is shown in the figure.
It is advisable to assemble the circuit using resistors of the PEV-10 brand, their ratings are: R1 - 10 Ohms, R2 and R3 - 3.3 Ohms, R4 and R5 - 1.2 Ohms. Cooling for the resistances can be made from aluminum channel.
It is not advisable to connect a motherboard or, as some “craftsmen” advise, a HDD and CD drive as a load during diagnostics, since a faulty power supply can damage them.
We list the most common malfunctions characteristic of switching power supply system units:
After the power supply is removed from the system unit and disassembled, first of all, it is necessary to inspect it to detect damaged elements (darkening, changed color, loss of integrity). Note that in most cases, replacing the burnt part will not solve the problem; you will need to check the piping.
If none are found, proceed to the following algorithm of actions:
If a faulty transistor is found, then before soldering in a new one, it is necessary to test its entire wiring, consisting of diodes, low-resistance resistances and electrolytic capacitors. We recommend replacing the latter with new ones that have a larger capacity. Good results are obtained by shunting electrolytes using 0.1 μF ceramic capacitors;
It is not uncommon for an apparently normal capacitor to turn out to be unusable when tested. Therefore, it is better to test them with a multimeter that has a capacitance measurement function, or use a special device for this.
Video: correct repair of an ATX power supply.
https://www.youtube.com/watch?v=AAMU8R36qyE
Note that non-working output capacitors are the most common fault in computer power supplies. In 80% of cases, after replacing them, the performance of the power supply is restored;
In conclusion, we will give some tips on improving the power supply, which will make its operation more stable:
Such a minor modification will significantly extend the life of the computer power supply.
