Lighting Transformers

Lighting transformers are, just as the name implies, transformers that are specifically utilized to work with lighting. They are typically referred to as dimmer switches. By using the ability of a transformer to alter the voltage going through a circuit, a light can be made brighter or dimmer. Lighting transformers are used in a variety of different applications, not just for brightening and dimming lights. Essentially, because they do allow the voltage across a line to be varied, they can used for any number of applications where voltage does have to be changed a bit to accommodate various devices.

There will be a primary voltage rating, a secondary voltage rating and maximum and minimum power ratings. There may also be a minimum frequency rating and a maximum frequency rating.


Primary Voltage Rating

The primary voltage rating is the voltage that can be applied to the primary side of the transformer under normal operating conditions. This needs to be maintained within the stated limits for safety purposes.


Secondary Voltage Rating

The secondary voltage rating is the voltage that will be obtainable from the secondary coil under normal operating conditions with the primary voltage rating applied to the primary coil.


Power Rating: This describes the maximum amount of power that can be applied to the transformer without causing a malfunction or without putting the transformer in danger of malfunctioning. If this number is exceeded, the transformer may overheat or other damage may occur, such as the degrading of the insulation in the windings. Ideally, the entire system to which the transformer is attached should have a lower wattage than the maximum power rating of the transformer itself.

Types of lightning transformers


Electronic: Electronic transformers are designed for low-voltage applications. These do have some advantages over other types of transformers. They typically operate at lower temperatures and are more compact. These transformers are limited to 300 W of power.


Isolation Transformers: Isolation transformers separate one circuit from another. They are typically used in applications where sensitive equipment needs to be isolated from a potentially dangerous amount of voltage or current traveling across a primary power source. These types of transformers may be used in lighting applications where there is a very high voltage line involved and where the low-voltage circuit needs to be adequately separated for safety purposes.


Magnetic: Magnetic Transformers rely upon the relationship between magnetism and electricity to transform voltage and current. By inducing a magnetic field in the secondary coil, an electrical current is induced in the coil. The number of windings determine the amount of voltage in the secondary coil. These types of transformers have been in use for a very long time and, over that time, they have become very advanced and efficient.

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Description Price Primary Voltage Rating Secondary Voltage Rating Power Rating Dimensions Length Width Depth Maximum Temperature Weight Type Construction Mounting Type Number of Phases Standards Met
RS Stock No. 158-7227
Mfr. Part No.HIT 105
BrandBlock
PHP2,346.21
Each
units
230V ac 11.5V ac 105W 166 x 76 x 77mm 166mm 76mm 77mm +40°C 2kg Isolation - - - -
RS Stock No. 811-7140
Mfr. Part No.94386
BrandGE
PHP428.31
Each
units
220 → 240V 12V 20 → 60W 109 x 40 x 20.5mm 109mm 40mm 20.5mm - - - - - 1 IEC 61347-1, IEC 61347-2-3
RS Stock No. 856-106
Mfr. Part No.12080
BrandSunnex
PHP2,745.00
Each
units
415V ac 12 V ac 60W - - - - - - - - - - -
RS Stock No. 575-964
Mfr. Part No.12060
BrandSunnex
PHP2,263.71
Each
units
230V ac 12 V ac 60W 99 x 69 x 72mm 99mm 69mm 72mm - - - - - - -
RS Stock No. 881-3318
Mfr. Part No.119T340
BrandGrasslin
PHP4,766.02
Each
units
120V - 300W - - - - - - - Enclosed Surface - -
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