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Your cart is empty. LM7812-12V voltage regulator module integrates rectification, filter components and voltage regulator chip, input AC or DC voltage within a certain range can stably output 6V/9V/12V voltage. With overheating and overcurrent protection.
This product is upgraded according to the user's usage. The output is changed from the single terminal output of the original version to the terminal + 5X2 Pins output. And optimize the PCB design, improve the thermal performance and stability of the product.
Parameter:
Enter the rated voltage parameters:
There is no need to distinguish between the positive and negative terminals at the input.
Output rated voltage parameters:
LM7812 - DC 12V ±0.3V.
Maximum output current: 1.2A Max.
Output mode: terminal + 5x2 pins.
VCC: Connect the output positive.
GND: Connect the output negative terminal.
Dimension : 49 x 26 x 22 mm (LxWxH).
Protection function: overheat protection, overcurrent protection.
Special Note: Do not exceed the rated voltage of the input voltage. Do not overload the output.
Package Inclued:
Three Terminal Voltage Regulator Module（Pack of 2）
Traveller
Reviewed in Canada on July 26, 2024
Described as FainWan 2PCS Three Terminal Voltage Regulator Module LM7805 LM7806 LM7809 LM7812 DC or AC to DC is a bit confusing. I was exepecting to see an order choice for ordering one of the 4 products listed. Very strange.What I got was two 7812 regulators. With the full wave rectifier for AC or DC reverse protected is a 13 to 15 volt input, 12 VDC output voltage regulated power supply. There are bypass and filter caps and a heat sink on the board, so the output is pretty smooth and the full current can be used.Construction is average, through hole on a basic PCB.Useful to have in your kit when you need 12 volts.Wish they had a way to order a particular volage, otherwise this is just a grab bag item good for playing and learning.Overpriced for the build quality at $9.
Roy & Beth
Reviewed in Canada on July 22, 2024
Nothing in the description of these voltage regulators makes any sense. I only ordered them because they would cost me nothing and I wanted to get some clarification for others.Let's start with the description claims. LM7805 LM7806 LM7809 LM7812. Which is it? Which one are you getting? Since there are only two in the pack, it can't be one of each. I can't say what you might receive, but I got two LM7812's.Quote: This product is upgraded according to the user's usage.What is that supposed to mean? As my usage requires a 5-volt regulator, will it automatically upgrade to a LM7805?The description talks about overheating and overcurrent protection. Well, the chip itself has built in protection. Is that what they're talking about because the circuit board certainly does not have any additional current protection? The circuit is the most simple and basic design you can do with a voltage regulator.These voltage regulators utilize a full bridge rectifier at the input. This is needed if you are supplying them with AC voltage, but if using DC, then it becomes just an additional voltage drop across the input. Not a big deal really, and yes, it does give protection from crossing the input terminals. I'll let that one slide.The rest of the description just gives some irrelevant information about regulators that you are not even getting.In conclusion: I got very basic 12-volt regulators (I would rather have gotten 5 volt) which can be used with AC or DC power input. I don't know what you might get. I took off one star for the confusion in the description. I took a second star off because I was hoping to get 5-volt regulators as the last part of the headline description says, "（Pack of 2） (LM7805 DC5V)".I'll just toss these in a drawer someplace as I might use them one day.
Karl Coulombe
Reviewed in Canada on December 7, 2024
Le régulateur "7812" n'était pas connecté, pas de conducteur d'imprimés sur la carte pour le régulateur. Si des fils sont soudés directement sur le régulateur, ça fonctionne.
Steve
Reviewed in the United States on October 23, 2024
PC board missing traces from the positive and negative outputs of the bridge rectifier. The positive leg of the input electrolytic capacitor has no circuit trace connecting it to the Positive input of the 3 terminal regulator like it is suppose to this circuit being a common configuration for this particular regulator.
SoundMan73
Reviewed in the United States on January 7, 2024
I got these to use in a project where I take a step down transformer and convert it to a clean 12VDC. These fit the bill perfectly!Measurements are .80" (20mm) wide 1.7" (44mm) long. Maximum height to the aluminum heatsink is exactly 1" (25mm). The mount holes on these are 15mm x 35mm.This comes with all of the components you need to fully rectify 15-24 VAC to 12VDC. I'm using an old transformer from the original Keurig K-cup coffee makers. They are about 17VAC when fed 120V and output 470 millivolts. Be careful not to go over 1.2 amps!These have both options to either screw down the wires or solder them.100% recommended!
Shawn
Reviewed in the United States on January 23, 2024
I'm not familiar with FainWan but have gotten a few products from the lately and been happy with everything.I actually had some of these regulators already but I was getting low so I snagged them. I plugged into my 24VAC tube headphone amp power supply and got a steady 12V DC from it. No surprise, but what you want is no surprise.Good stuff. It works for DC to DC too, but there are lots more options for those types of conversions, such as the plethora of low V buck converters with variable output voltage.Be aware that this is limited to 1.2A max output. I had a case where I was needing 2A and since I had 3A coming in at 24VAC, I figured I was easily covered but this module won't handle it. Not a fault of the module, but my personal user error.And of course, if you are patient and don't mind the occasional horrible quality, you can source these from Asia much more cheaply. But I've found that a good electronics vendor on Amazon is well worth the price difference.Recommended.
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