Power supply for hard drive 12v.
Properties
Description
Comes with cables
From us you can buy a power supply for 3.5" HDD 5.25" BD DVD CD IDE SATA 5V 12V up to 2A at a price of 780 RUR. with the possibility of ordering installation and repair services. You can pay for the purchase of a power supply for 3.5" HDD 5.25" BD DVD CD IDE SATA 5V 12V up to 2A in cash, electronic money, bank card, by bank account, cash on delivery or by bank transfer. It is possible to deliver the goods using our courier services in Moscow, using a courier company or by Russian Post. In addition, a pick-up point in Moscow is at your service.
1) Delivery by courier in Moscow.Carried out by our online store’s own couriers. To use delivery, you must select this method of receiving your order when making a purchase. Delivery is usually carried out on the next business day after placing the order (if a courier is available, delivery can be carried out on the same day).
The cost of delivery in Moscow (within the Moscow Ring Road) is:
319 rubles for goods with a total value of up to 1000 rubles;
279 rubles for goods with a total value of up to 3,000 rubles
249 rubles for goods with a total value from 3,000 to 12,000 rubles;
The cost of delivery in Moscow (outside the Moscow Ring Road) is:
350 rubles for goods with a total value of up to 1000 rubles;
300 rubles for goods with a total value of 1,000 to 12,000 rubles;
For goods costing over 12,000 rubles, delivery within Moscow is free.
2)Receipt of goods at company offices. If you have chosen this method of receiving the goods, after registration, wait for a call from the manager to confirm the availability and reservation of the goods in the warehouse. You can also reserve goods for pickup by phone.
3)Sending through a courier company. You can order delivery from any of the courier companies presented on the website. Delivery is carried out to the recipient's address or to the delivery points of courier companies.
Exact delivery times and costs depend on your choice courier service, weight and volume characteristics of the order and distance of the delivery point. Delivery time and cost are calculated automatically in the shopping cart when placing an order.
4)Sending by Russian Post. Carried out according to the post office code and recipient's address. Post restante shipments are made only upon prepayment.
You can pay for your purchase in the following ways:
1) Cash upon receipt at the company office or by courier delivery.
2) Electronic money on the site - Yandex.Money, WebMoney (service operator - Yandex company), Qiwi (by wallet number after agreement with the manager).
3) By bank card on the website (service operator - Yandex company).
4) By bank account (you can pay the bill at the bank or through a client bank).
5) Cash on delivery when sending to the regions. Payment is made to the courier company. No prepayment required.
How to pay for an order for legal entities?
1) For non-cash payment You must issue an invoice by selecting the appropriate payment type during checkout. After issuing an invoice for the product you have chosen, it is reserved for 5 banking days, including the day the invoice is issued. The goods are shipped only after receipt of 100% advance payment for the order to the company's bank account. Upon shipment, we will provide you with the entire set of documents (please note, we work without VAT).
2) Pay for your order in cash(purchase is made to the organization) . Please note that in this case you must have a power of attorney to receive goods from Tekhnomir LLC, or a seal of the organization. When making a purchase, you will be given a complete set of shipping accounting documents (please note: we work without VAT).
Product warranty
We strive to resolve any problem with a product purchased in our store as quickly as possible.
In the event of a malfunction in any purchased product, we undertake to exchange it or return the full price paid for it during the entire warranty period.
The following applies in our store: warranty periods for goods (if these terms are not indicated directly on the website of a specific product):
Matrices, screens, covers assembled with a matrix, displays, touchscreens, touchscreens assembled with a matrix, inverters, microcircuits, coolers, cables - 3 months from the date of receipt of the goods.
Batteries, power supplies, storage devices, RAM, drives- 3 months from the date of receipt.
Cables and accessories, connectors, Consumables - no guarantee.
Return of goods of good quality within 14 (30**) days not counting the day of receipt (including those purchased by mistake)
Any buyer who purchased a product in our store has the right to return or exchange a product of good quality without traces of installation and use within 14 (30**) days after receiving it (for regional buyers, it is important to send the item back by carrier within 14 (30**) days after receiving it). In this case, the product will be replaced with a similar one or 100% of the amount paid for the product will be refunded. Delivery costs, as well as commission in case of cash on delivery are additional services and in warranty obligations not included! Re-sending the desired item will cost an additional fee.
**applies to products from sections " Touchscreens (sensors) for tablets and smartphones" And " Matrix + sensor modules for tablets and smartphones" due to the need to test them before installation in the device.
To return an item you must:
Return of faulty (defective) goods in case of detection of a defect during the entire warranty period
Any customer has the right to exchange defective goods during the entire warranty period, in this case:
1) the client has the right to receive the full cost of the goods, including the cost of delivery and the amount of cash on delivery, if he wants to return the goods.
2) in case of replacement of goods, delivery of goods (both from the client and to the client) is carried out at our expense.
To exchange goods you need:
Report the shipment details to the manager (full name, shipping method, invoice number, date, etc.)
Provide a copy or original of the invoice confirming the purchase of the goods, warranty card(or a copy).
Deliver the goods to our office (Moscow) or ensure the goods are sent to our address from Russia (the method of delivery of the returned goods is agreed with our manager!)
Refunds for goods are made in a way convenient for you and for us after receiving the goods in agreement with our manager.
Note! The method of returning goods from Russia is agreed with our managers.
Sometimes you have to connect 3.5″ external hard drives or DVD-ROMs to different computers. This does not have to be done very often, but in several different places, geographically distant (relatively) from each other. And if I still carry the cord of a USB-SATA converter with me, it’s easier to buy power supplies and put them in those places where they may be needed, next to the used DVDs and HDDs. The blocks described below were purchased for these purposes.
From the description on the website:
size: 11.7 x 3.2cm x 4.3cm
cable length: 42cm
input voltage range: ac 100v-240v 50-60Hz
output voltage: dc 12v and 5v
weight: approximately 120g
The currents are indicated as 2A for 5 and 12 V. I didn’t really hope for 2A, I deliberately bought some of the cheapest samples. I’m not going to load them with high currents, and at a low price, it wouldn’t be such a shame if they were stolen or burned by colleagues. Photo from the seller's website:
In reality, the buildings turned out to be somewhat different. I won't say better or worse. Cases are like cases.
Molex connectors are missing one of the ground pins. On one of the power supplies, the 12 V contact somehow sits suspiciously deep... but there seems to be a contact.
First of all, I look at the output voltages under load on the most power-hungry hard drive I have - the SCSI server Seagate Barracuda ST15150N. It consumes more than 1A for each voltage and if it starts you can hear it!!! I especially keep it for testing power supplies during repairs.
The voltages are normal, but if you look at it with an oscilloscope... I can’t vouch for the accuracy of the measurements, the oscilloscope belongs to the office and is already pretty worn out. Set to 10mV per division.
This is 5 volts.
And this is 12 volts (under load).
I don’t like pulsations, I’ll try to see how I can improve the parameters of the blocks without much investment...
It often happens that some parts (especially the inductor) are provided on the boards, but not installed by the economical Chinese, by installing which you can significantly improve the output parameters.
We open the power supply, everything is sadder with it. It is assembled according to the standard circuit of a flyback switching power supply. Everything is simplified to the point of disgrace. The 22μFx400V capacitor is a bit small, but oh well.
The primary circuits do not even have a filter (at least there is a fuse). There are no chokes in the secondary circuits (and there is not even space for them), and small capacitors. There is a 16-volt capacitor in the 12 V circuit. In my opinion, this is not enough.
The soldering is very mediocre, although everything works, in some places you have to solder it to be safe. The ground contact is hanging in the air...
There are places on the board for soldering wires, but everything is soldered from below, directly to the board traces.
There is space for installing two Schottky diodes in parallel.
Yes, the power supplies correspond to the price. It’s unlikely that they will be significantly improved, but I’ll try to do everything I can.
I use places to install parallel diodes to place the inductor.
To do this, I trim the tracks on the board and resolder the output wires.
Then I replace the capacitors. I use what I have at hand, Low ESR 105 0 and for higher voltages, I shunt them with ceramics.
Probably, something else could be done, but I don’t see much point.
I assemble everything into the case and connect the load.
Now it's 5 volts.
And so on 12 volts.
The pulsations became much less, which is what I wanted.
Conclusion: in their original state, such power supplies are not recommended for use and are even dangerous for connected devices...
After modification it didn't become much better, but still better. But considering the cost of such power supplies, after a little modification, and being aware of the risk, they can be used, especially if they will have to be used periodically and their long-term operation in 7x24 mode is not planned.
I didn’t draw the diagram, I found a very similar one on the Internet.
You might be interested:
Adapters for light bulbs from E27 to E14
Soldering iron stand with spring holder and two containers
I bought a USB to SATA adapter on ebay - http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=111210536778&ssPageName=ADME:L:OC:US:3160, and a separate power supply for it - it turns out cheaper than set.
I didn’t test all of this together, I checked only the power supply with a tester - it works, and took it apart to avoid surprises. Here is a photo:
I want to say right away that the power supply comes with such devices, but people complain that they burn and take the hard drive with them to VALHALLA. This power supply is designed for 5 and 12 volts, I checked it and it is. The build quality is a C grade, and as always you need to finish it by applying thermal paste to the radiator, it’s already there in the photo. I haven’t checked how it works with the disk, when I check it I’ll write a report about adapter (I’d like to say right away about its disadvantages - there is only SATA and no power connector for the drive, so a separate power supply is needed, there are more expensive square adapters - without these disadvantages, when using SATA drives - you don’t need a separate power supply.) and power supply. Seller, if you believe the reviews, he sells thousands of these, which is why he chose it (He has similar ones with a wave-like pattern on the body, but they are cheaper, so the quality is probably worse). I have a lot of power cords, but I had to make the SATA-MOLEX adapter myself - I saved 30 rubles. Yes, I’ll write why I bought it - I have a lot of old screws, but I don’t have a portable hard drive, and this gadget solves this problem.
