The buzzing is from a loose winding that is moving. The best way is to throw the unit away and get another unit. The other alternative is to break he unit open and paint the coil.
The output of a 12 volt transformer is an alternating current (AC). Your adapter is a 12 volt transformer but it has a built in half wave or, more expensive ones, a full wave bridge rectifier. What this rectifier does is change AC to DC. Bridge rectifiers are cheap to purchase. Connect it to the output of the 12 volt transformer and you will get a DC voltage. Great little project.
A 15-volt transformer can potentially replace a 12-volt transformer for an LED aquarium light, but it may not be advisable. LEDs are typically designed to operate at specific voltage levels, and using a higher voltage could lead to overheating, reduced lifespan, or even damage to the LEDs. It's best to use a transformer that matches the voltage rating specified by the LED manufacturer to ensure safe and optimal performance.
No, the 12 VDC light must have a DC supply and the transformer voltage as well as being 16 volts which is too high, the output is AC.
To change the voltage of a 12-volt battery to a 6-volt output, you can use a voltage regulator or a step-down transformer. A voltage regulator will reduce the voltage to the desired 6 volts, while a step-down transformer will step down the voltage from 12 volts to 6 volts. Both options will help you achieve a stable 6-volt output.
To power ten 12 volt 10 watt lights, you would need a transformer with a total output of at least 120 volts and 100 watts.
No, it will destroy the 3 volt device.
Use a voltage devider or a transformer.
The output of a 12 volt transformer is an alternating current (AC). Your adapter is a 12 volt transformer but it has a built in half wave or, more expensive ones, a full wave bridge rectifier. What this rectifier does is change AC to DC. Bridge rectifiers are cheap to purchase. Connect it to the output of the 12 volt transformer and you will get a DC voltage. Great little project.
Step down transformer.
A 15-volt transformer can potentially replace a 12-volt transformer for an LED aquarium light, but it may not be advisable. LEDs are typically designed to operate at specific voltage levels, and using a higher voltage could lead to overheating, reduced lifespan, or even damage to the LEDs. It's best to use a transformer that matches the voltage rating specified by the LED manufacturer to ensure safe and optimal performance.
No, the 12 VDC light must have a DC supply and the transformer voltage as well as being 16 volts which is too high, the output is AC.
Reduce the primary voltage and the secondary will also drop.
Look at it and find its weight. If it is heavy it contains a transformer and is dimmable. If it is very light and obviously contains no transformer, it can't be dimmed.
To change the voltage of a 12-volt battery to a 6-volt output, you can use a voltage regulator or a step-down transformer. A voltage regulator will reduce the voltage to the desired 6 volts, while a step-down transformer will step down the voltage from 12 volts to 6 volts. Both options will help you achieve a stable 6-volt output.
To power ten 12 volt 10 watt lights, you would need a transformer with a total output of at least 120 volts and 100 watts.
If it is AC then you don't need a formula, you just need a transformer.
The amp rating for a 100VA transformer will vary depending on the actual voltage of the transformer. Transformers have both a primary and a secondary voltage.