Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A

Input Voltage: AC200V-240V
Output Voltage: DC12V
Instantaneous current: 3A
Continuous Current: 1.2A
Working Temperature: -20°C~60°C
Operating Humidity: = 90%RH

12V 3A/5A Electric Door Lock Access Control Power Supply

Access Control Power supply: 220/110VAC input,12VDC 3A/5A output, with Regulatory function with delay, Easy for install, convenient for connect, Dampproof design; Suitable for Access Control system.

Features:
– High Efficiency and good price
– Built-in EMI filter
-100% full load burn-in test
– Low output ripple and noise
– Protection:Over load/Over voltage/Short circuit
– With protective circuit
– Output: 12V,5A 12VDC
– Capable to connect with 12V 7AH backup battery

Uninterruptible PSU

• Metal Case With Key-lock
• 85% High efficiency
• 2 Years Warranty
• Full Protection
  · No delay battery boot up
  · 100% full load burn-it test

FPS 1203N-01B is an UPS power supply, its main output is 13.6V / 3A, while it also provides maximum 1A charge current. It could be used for CCTV surveillance / access control / fire alarm and other security systems.

• Work with different optional modules

Access Control Power Supply PSU 12V 3A

AC input voltage AC110V-240V;

2 ) DC output voltage of 12V;

3 ) Output current 3A ( largest ) ;

4 ) Output voltage accuracy ± 1%;

5 ) ripple voltage Up  ≤ 50mV;

6 ) Output Power : 50W.

7 ) The outer steel Dimensions : 120 * 95 * 38 mm;

8 ) Weight : 0.4kg; Protection Level : 2

9 ) Fourth, the output terminal wiring diagram: Figure

1-3: NO terminal and COM terminal , normally open no output , the key trigger output DC12V, connected electronically controlled lock

( 0-15 seconds delay , a positive , three negative ) ;

2-3: NC terminal and COM terminal , normally closed output DC12V, after the power button is triggered , then the electric or magnetic latch

Power locks ( 0-15 seconds delay , 2 positive, 3 negative ) ;

4-5: DC12V output voltage regulation, 4 is positive , 5 negative ;

5-6: open button input terminal ( for negative power supply ) , which can be accessed switch output ( relay output, low ) control

Electric lock access control system ;

5-7: open button input terminal ( on the positive power supply ) , which can be accessed switch output ( relay output, high level ) control

Electric lock access control system ;

8-9: 12V input voltage door, dedicated to the direct control of the output voltage electric lock access control ;

What does 12v 3a mean?

maximum current

12V 3A means 3A is maximum current you can withdraw from that power adapter. More than 3A, the voltage will be drop to less than 12 (so your devices wont work as well), or just burn the power adapter. … Adapter because your load device has a resistance rating that draws 1.5 amps.

What is a 12v power supply?

12V power supplies (or 12VDC power supplies) are one of the most common power supplies in use today. Linear regulated 12VDC power supplies regulate the output using a dissipative regulating circuit. … They are extremely stable, have very low ripple, and have no switching frequencies to produce EMI.

What are power supply specifications?

Voltage and current specifications

The primary power supply specifications are the voltage and current output parameters. In terms of the voltage, the power supply may be fixed or it may have a variable output. … If the power supply has a variable range then it is necessary to ensure that it covers the required range.

Can I use a 5v power supply on a 12v?

A 5V adaptor cannot drive a 12V device. Also, an adaptor of voltage higher than the device needed would damage your device.

What happens if I use a higher voltage adapter?

Voltage too high – If the adapter has a higher voltage, but the current is the same, then the device will likely shut itself off when it detects an overvoltage. … The device could power on, and just draw more current from the adapter than it’s designed for. This could cause the adapter to overheat or fail

What are the 3 types of power supply?

There are three subsets of regulated power supplies: linear, switched, and battery-based. Of the three basic regulated power supply designs, linear is the least complicated system, but switched and battery power have their advantages.

How does a 12 volt power supply work?

A power supply is used to reduce the mains electricity at 240 volts AC down to some thing more useable, say 12 volts DC. There are two types of power supply, linear and switch mode. … The AC signal is rectified and regulated to produce a high DC voltage. This is then switched on and off rapidly by a FET.

Can I use 12v AC to power 12v DC?

As long as the voltage of the “DC Appliance” is not less than the 12 Volt adapter then it will either work or won’t, all in all it’s a bad idea to experiment, actually it’s a bad idea just to even think about doing it, unless you know about what you are about to do, don’t.

How does a power supply work?

A power supply unit (or PSU) converts mains AC to low-voltage regulated DC power for the internal components of a computer. Modern personal computers universally use switched-mode power supplies. Some power supplies have a manual switch for selecting input voltage, while others automatically adapt to the mains voltage.

How does a DC power supply work?

DC power supplies use AC mains electricity as an energy source. … A rectifier is used to convert the transformer output voltage to a varying DC voltage, which in turn is passed through an electronic filter to convert it to an unregulated DC voltage.

Should I turn off PC power supply?

If you’re worried about a short circuit or similar, utilize a quality surge protector or universal power supply (UPS) with integrated surge protection. There’s really no reason to. … To be clear, I’m not saying it’s neither good nor bad to turn off your computer then flip the switch on the power supply.

How do I convert 12v to 5v?

Convert 12V DC to 5V DC

1. Step 1: Take All Components As Shown Below and in Pictures. Components required – …
2. Step 2: Connect Input Power Supply. 7805 voltage regulator contain three pins.In which we have to give power supply on pin-1 and pin-2. …
3. Step 3: Output Power Supply. …
4. Step 4: Wiring Is Completed. …
5. Step 5: Checking.

Can I use a power supply with higher voltage?

2 Answers. Higher current (A) is okay because the device won’t use as much, but higher voltage (V) is going to “fry” it. Conversely, lower voltage is unlikely to cause damage since the device simply won’t have enough power, but lower current can cause trouble because the power supply cannot provide enough.

Can I use 19v charger for 12v?

19V is generally going to fry any device that was designed to run at 12V (especially consumer products). And while it’s not very likely it might also catch fire. For a AC adapter to work you will need one with the exact voltage (12V) and an equal or higher current rating (1.5A or more).

Is it OK to use higher amp adapter?

Amperage. … Your computer will use more power, in the form of higher amperage draw, when it’s working hard than when it’s not. (Voltage remains the same regardless.) Thus, as long as you replace your power supply with one capable of providing as much or more amps than the previous supply, you’ll be fine.

Can I use a 24v power supply on a 12v?

Yes and no. The 24V supply can be used but you need to add a series resister to drop the voltage by 12v. … The LED strip light is constant voltage light, so the power supply output voltage have to match the working voltage of the LED strip light.

What if I use the wrong AC adapter?

This is what happens when you use the wrong voltage adapter

They include a current adapter that is lower than the device rating as well as reverse polarity. The latter and voltage adapter higher than the device rating can also damage the device. So, clearly, using the wrong voltage adapter can harm your body.

Are batteries AC or DC?

Batteries only supply DC voltage and wall plugs only supply AC voltage.

How do I choose a power supply?

When buying a power supply, make sure its continuous wattage meets your needs or you’ll likely run into problems when your PC is running a full load. Finally, don’t be worried that buying a higher-rated power supply means you’ll necessarily be using more power.

How do I choose a DC power supply?

This one is pretty simple. If your device needs 9V, you need a 9V power supply. If your device needs 5V, you need a 5V supply. Also, if your device needs a DC voltage (which is the most common), you need a DC output from your power supply.

Why does a PSU fail?

Those high currents are also called “inrush currents,” and in power supplies, the main reason for them is the charge of the bulk cap(s). High voltage and current surges can be the cause of multiple component failures, including fuses, bridge rectifiers, diodes, and FETs.

How do I know if my PC power supply is failing?

There are a few telltale signs of a computer power supply that may be failing.
…
Typical symptoms include:

1. Random computer crashes.
2. Random blue screen crashes.
3. Extra noise coming from the PC case.
4. Recurring failure of PC components.
5. PC won’t start but your case fans spin.

How many volts does a TV use?

120 volts

1-2 of 2 Answers. The tv uses 27 watts of power at 120 volts. You’ll need an inverter to run this tv from a 12-volt electrical supply.

Can you power a DC device with AC?

Active components can be made to work with DC or AC, with much of the same restrictions as passive components. Once a circuit has been made to work with DC, though, applying AC as a signal or a power source can adversely affect output, device life and safety, to name just a few of the categories of interest.

What is the difference between 12v AC and 12v DC?

12V DC is safer than 12V AC. Body resistance decreased when the 12V AC still may cause the dead, 12V DC will not be in 100%. However, the hazard degree of electric shock to the human body mainly depends on the size of the current passing through the human body and the length of the energization time.

Can DC LEDs run on AC?

In most applications, LEDs are driven by a DC power supply, but AC offers several significant advantages. Lynk Labs has developed technology that allows LEDs to be driven directly from an AC supply. A new approach is to develop AC-LEDs, which can operate directly from an AC power supply.

Is opening a PSU dangerous?

The big tank capacitors inside a psu are dangerous yes, because they can store a few hundred volts for a very long time and give you a nasty shock. … I would advise however, that whenever you open up any equipment that is mains powered, you assume the capacitors hold a charge.

Is a power supply input or output?

3 Answers. The labelled power on a PC power supply is the Total power output of the device. It is NOT the input power specification. The input power requirement is impacted by the efficiency and the power factor of the supply and will always be higher than the label on the power supply.

What is the main function of a DC power supply?

DC power supplies are power supplies which produce an output DC voltage. Power supplies are devices that deliver electric power to one or several loads. They generate the output power by converting an input signal into an output signal (in this case, a DC output).

What is the difference between AC power supply and DC power supply?

In direct current (DC), the electric charge (current) only flows in one direction. Electric charge in alternating current (AC), on the other hand, changes direction periodically. The voltage in AC circuits also periodically reverses because the current changes direction.

Is 12v AC or DC?

AC means Alternating Current and DC means Direct Current. AC and DC are also used when referring to voltages and electrical signals which are not currents! For example: a 12V AC power supply has an alternating voltage (which will make an alternating current flow).

Is it bad to unplug computer every night?

Computers

Make it a habit to unplug your computer every night. Not only is this a real energy saver, but it also can protect your computer from serious damage. It’s not an old wives’ tale — a power surge caused by lightning can completely fry your computer.

Should I turn off PSU before unplugging?

Long story short: the switch is almost optional if the computer’s off, but it’s still good practice to use it anyway. No need to… just buy a nice surge protector power-bar. The more you keep unplugging your pc the more stress you gonna put on the socket of the PSU. Eventually you are

Is it OK to leave your computer on 24 7?

The logic was that the surge of power when turning the computer on would shorten its lifespan. While this is true, leaving your computer on 24/7 also adds wear and tear to your components and the wear caused in either case will never impact you unless your upgrade cycle is measured in decades.

What resistor do I need to drop 12v to 5v?

PLace two resistors in series with the 2nd resistor value (5/7) of the first resistor value. Place the resistors between 12v and ground and then you will get 5v at the point between them. This is a very crude way of doing it. It is unregulated so the voltage out will be dependent of voltage in.

How do I convert 7805 to 12v to 5v?

12V battery to 5V 1.5A DC converter

I use the 7805 power supply with the 12V battery. To reduce the constant voltage of 5 volts. Testing pure IC-7805 not over 1A current. It requires a transistor to increase the output current up

Will 5v trigger a 12v relay?

Is it a lighted switch. There is no other reason for the voltage being cut down by the switch other than you having it wired through the lamp in the switch.

Will 5v trigger a 12v relay?

Is it a lighted switch. There is no other reason for the voltage being cut down by the switch other than you having it wired through the lamp in the switch.

Can I plug 12v into 9v?

In most cases, you cannot use a 12V adapter to power a 9V guitar pedal. Using a 12V adapter on a pedal designed to only handle 9V can completely destroy it. There are some guitar pedals built to handle voltages higher than 9V. … Check the pedal’s manual before you try plugging a 12V adapter into any pedal.

What happens if you use the wrong voltage?

It will lead to electrical burned and may cause serious consequences such as fire if the input voltage is higher than the normal. But if the input voltage is below the rated voltage, the electrical appliance can’t work normally or simply failed to work, and it may also cause damage to the motor.

Does higher voltage mean faster charging?

Greater current and higher voltages charge batteries faster, but there’s a limit to what they can take. Smartphone batteries charge when a current passes through them. Greater current and higher voltages charge batteries faster, but there’s a limit to what they can take.

Will a 12 volt power supply charge a battery?

No, you can’t charge a 12 volt battery with a 12 volt power supply because the charging voltage always needs to be greater than the battery voltage (12 volts).

How many amps do I need to charge a 12 volt battery?

10 amps

A 12-volt automotive battery, for instance, takes a while to charge. In fact, fast charging for this kind of battery is not recommended. 10 amps are the recommended current. This is a slow charge.

How do you convert 19v to 12v?

The simplest way is a 12 v battery and a resistor from its positive terminal to the 19 v positive supply. Connect the load accross the battery. And the other terminal of the 19 v to the other terminal of the battery

Do amps matter for a power supply?

Current is supplied by a power supply or charger. … It will try and take as much current as it needs. So if a product requires 2.1Amps then the power supply should be able to supply 2.1Amps or more. If the power supply can supply more than 2.1Amps this doesn’t matter as the product will only take 2.1Amps.

Is higher or lower amps better?

Higher voltage is better when current has to travel long distances. A low amp and high voltage system allows you to reduce the amount of electrical current, so less of it is lost as it travels through wires, while still delivering the same amount of horsepower at the end.

What is the difference between 5v 1a and 5v 2a?

Yes, literally the charging time will be halved with a 2A charger to charge a device which requires current higher than 1A. A higher Ampere rated charger is capable of providing a higher current. … Using the 5V 1A charger to operate a device that is normally charged with a 5V 2A charger is a bad idea.

Can I use 2a charger for 1a?

The current draw (Amperes) is controlled by the device you plug in. So if you plug a 1A device into a 2A charger, it will still only draw 1A. … If you plug a 2A device into a 1A charger, you will only get 1A. The device will charge more slowly (1/2 speed roughly) but everything will be fine.

Is 12v better than 24v?

Other things being equal, that would cause losses on 24v to be half those on 12v. It is clear from this that a 24v system is always better than a 12v system – provided you can physically fit two batteries. … The amount of energy in the batteries is amps x hours x volts. Consider a 12v 60 Ampere Hour battery.

Can I connect 12v led to car battery?

Answering your question: you can’t use a 12v battery to power a 12v led strip directly. a fully charged lead acid will have 13.8v which will burn out your led strip if you are doing so. You don’t need a current limited device.

Can a 12 volt motor run on 18 volts?

No. You are applying too much voltage to the motor. This will cause too much current to flow, and in turn, burn out the motor. If it is rated for 12 volts, it should get at the most 10% more or 13.2 volts.

What happens if amps are too high?

A higher voltage than a device is designed for will most likely blow up some components, but amperage is derived from how much current is actually drawn, based on the device’s resistance, so having “too much” is not a problem and will do no harm.

Can I use a 90 watt charger on a 120 watt laptop?

You should not use a 90 Watt brick if you need a 120 Watt brick. While I talked about charging currents, The max output requirement is based on Charging current required by a depleted battery pak + Operating current required by the laptop under full load.

Can a charger be too powerful?

Yes, it is absolutely safe to charge a device with a charger that has more current capacity than needed. Since the voltage is held constant (5V), the only factor that determines current draw is the load (another term for resistance) the device places on the charger.

Which is more dangerous AC or DC?

A.C. is More Dangerous than D.C.

A.C. is said to be four to five times more dangerous than D.C. For one thing, A.C. causes more severe muscular contractions. … The frequency of the AC has a lot to do with the effect on the human body. Unfortunately, 60 cycles is in the most harmful range.

Will 12v AC LED run on DC?

There is no such thing as an AC LED. There is a circuit inside which probably incorporates a bridge rectifier and current limiting resistor. If so, it will work just fine on 12 volts DC. … Yes, because LED’ s really are a Direct current device light that is hooked up to a circuit.

Can I use 12v AC instead of 12v DC?

As long as the voltage of the “DC Appliance” is not less than the 12 Volt adapter then it will either work or won’t, all in all it’s a bad idea to experiment, actually it’s a bad idea just to even think about doing it, unless you know about what you are about to do, don’t.

Can I power 12v AC with 12v DC?

If it is for example, a typical 7812 12V regulator, it needs at least 14V to work properly. If its a lower voltage regulator (say, unlikely 9V or 5V) it might work fine. With AC, current flows through 4 diodes, feeding DC only uses 2. So they have to handle double the current (which may or may not be fine).

Can 12v AC kill you?

The resistance of the human body is anywhere from 100,000 ohms (dry skin) to 1,000 ohms (open wound). In the former case, you’d need 50,000Volts to reach 500mA, in the latter case, it would be 500Volts. So, no, 12 volts won’t kill you. … Because 12 volts is not dangerous even though the battery be capable of 500,000 ma!

Can I use 12v for 5v?

Current is decided by Ohms law, I=V/R. With 12V your device will draw double the current and gets heated up because all current limiting values of your device are calculated for 5V source. … Most TTL ICs which are rated for 5V have a max acceptable voltage limit at 7V.

Can I use a 5v power supply on a 12v?

A 5V adaptor cannot drive a 12V device. Also, an adaptor of voltage higher than the device needed would damage your device.

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Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A

Access Control Power Supply PSU 12V 3A