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Can you substitute 12V. AC 40va Transformer for 12V. AC 1000ma. Home service-out door fountain?
Yes, the output current of a 40va transformer at 12 volts is 3.33 amps. The replaced unit had an output of 1 amp making it a 12va transformer. By doing this exchange there will be three times the capacity of the new transformer over the old transformer.
A transformer is rated at 12V-0-12V and 250mA so what does the 250mA mean and how do you calculate the fuse for the primary winding without knowing the VA rating?
A: The VA rating is there 6v/a the power fuse to blow is 6watts. 050a fuse
What is the turn ratio of a transformer if the primary voltage is 240V and the secondry is 12V volts?
240 / 12 = 20
If a dc voltage of 12v is added to the secondary of step down transformer and rating of transformer is 220 input and 12v output what will be the result from primary of transformer?
Adding a DC voltage to the secondary of a transformer will not have an effect on the primary side, as transformers work on the principle of electromagnetic induction which is based on alternating current. The primary side of the transformer will still operate based on the input AC voltage of 220V. The DC voltage on the secondary side will not be transferred to the primary side.
Why differential relay is not used for 11kv transformers?
It depends what you mean by an '11-kV transformer'; do you mean a primary transformer (33/11-kV transformer) or a distribution transformer (11-kV/400-230-V transformer). Differential protection IS offered on primary transformers.
Can a 12V 800MA adapter be used in place of a 12V 500 Ma adapter?
Yes
Can I exchange a 12V 400MA transformer with a 12V 1.25 amp transformer without damaging the unit?
if used for charging-NO if used for supply voltage-yes
How can I convert 110v to 12v using a transformer?
To convert 110v to 12v using a transformer, you would need a transformer with a turns ratio of 9.17:1. This means the primary winding (110v) would have 9.17 times more turns than the secondary winding (12v), allowing for the voltage conversion. Make sure to select a transformer with the appropriate power rating to handle the load at 12v.
Can i use 12v -0-12v to 230v step up transformer to get more voltages let say 2000v?
If you exceed the rated voltage of your transformer, there is a high possibility that its insulation will break down and you will ruin that transformer.
Construct a circuit of 230v to 12v converter other than a transformer?
NO
Can you substitute 12V. AC 40va Transformer for 12V. AC 1000ma. Home service-out door fountain?
Yes, the output current of a 40va transformer at 12 volts is 3.33 amps. The replaced unit had an output of 1 amp making it a 12va transformer. By doing this exchange there will be three times the capacity of the new transformer over the old transformer.
What does a dual voltage power supply do?
It convert 220v or 115 to -12v and +12v by using many components and step down transformer.
How many 12V 50W bulbs can you run on a 20-60VA transformer?
A 60VA transformer can run only one 50W bulb.
A transformer is rated at 12V-0-12V and 250mA so what does the 250mA mean and how do you calculate the fuse for the primary winding without knowing the VA rating?
A: The VA rating is there 6v/a the power fuse to blow is 6watts. 050a fuse
Say the power consumption of my 12v devise is 80 mA or less and the instructions say use a 12v 300 mA power supply and I use a 12v 800mA OK or not?
Generally, yes. If your devise will only draw 80mA, it will do it whether it is connected to a supply that is capable of supplying 300mA or 800mA. The amperage rating on the power supply is the highest current that it is rated for. It will easily and safely provide less current. The load that is connected to the power supply will determine the actual amount of current.
If a centre tap transformer rated as 12V-0-12V 1Athen what will be the secondary current of that perticular transformer?
The output voltage of a transformer is not connected to the maximum rated current. You state that the transformer is rated at 12-0-12 at a current of 1A, therefore the maximum (rated) current on the secondary would be 1A. Normally, transformers are rated in VA (volt amps) which is simply voltage x current, the voltage across the two 12v terminals would be 12+12 volts, making the rating of the transformer 24VA.
Can you use a 14.5 DC power cord on a 12V computer monitor?
No. If the transformer outputs 14.5V it is very unwise to hook it up to a 12V Monitor. The transformer needs to be able to output 12v, the polarity needs to be correct (e.g. tip + tip -), and it must be rated to provide at LEAST the required amount of amperage.
