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Product Description:

Why the transformer output voltage is very high: direct measurement of no-load AC voltage is a little high, with the increase in load, the voltage will decrease is normal.

Referring to the above figure, the AC Vo rectified into a pulsed DC V1, then filtered by the capacitor into a DC V2. The capacitor will be charged in the peaks to compensate for the voltage in the valleys (discharged in the valleys to increase the output voltage), so the RMS value of the V2 voltage will be increased, up to the peak of the AC (the capacitor capacity is large enough and the discharge current is small). The peak value of alternating current is two times the RMS value (1.414 times), so the DC voltage after rectification and filtering is the nominal voltage multiplied by 1.414, for example, after rectification and filtering of a 12V transformer, the DC voltage is around 16.968V (not taking into account the voltage drop of the rectifier circuit and the transformer error).

3W Product Parameters.

Product specification:EI41*17
Product power 3W/NA
Input Voltage :220V
Output Voltage:9V
Wire length:17cm
Main material: pure copper enameled wire, high-quality silicon steel sheet
Dimensions: steel plate length 36 high 32 thick 17mm
Installation hole distance:47MM
Product weight:0.11KG

5W Product Parameters.

Product Specification:EI41*20
Product power 5W/NA
Input Voltage :220V
Wire length:13.5cm
Main material: pure copper enameled wire, high-quality silicon steel sheet
Dimension:42*35*40mm
Product weight:0.11KG

10W Product Parameters.

Product Specification:EI48*24
Product power 10W/NA
Input Voltage :220V
Wire length:15cm
Main material: pure copper enameled wire, high-quality silicon steel sheet
Dimension:50*40*42mm
Product weight:0.38KG

20W Product Parameters.

Product Specification:EI57*30
Product power 20W/NA
Input Voltage :220V
Wire length:15cm
Main material: pure copper enameled wire, high-quality silicon steel sheet
Dimension:60*52*50mm
Installation hole distance:72mm
Product weight:0.7KG

30W Product Parameters.

Product Specification:EI66*33
Product power 30W/NA
Input Voltage :220V
Wire length:15cm
Main material: pure copper enameled wire, high-quality silicon steel sheet
Dimension:68*62*58mm
Installation hole distance:82mm
Product weight:0.95KG

Warm Tips

1. Transformer output for alternating current (AC), not divided into positive and negative poles, the need for DC output, please buy with caution.
2. Transformers are used in a wide range, and the load capacity of different sizes, we can not know a variety of We can not know the transformer requirements of various equipments. You have to check the input and output voltage, AC and DC power, external dimensions, and the appearance of the same.

Package Including:

According to your choice.You can choose the value you want from the drop-down box above.

Due to different batches, there may be size errors. Please understand！

Payment:

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Shipping:

We Ship to Worldwide.

Orders processed within 24-48 hours of payment verification. it will take 15-25 days for delivery. but Customs will random inspection some parcel, so that's why some parcel need more than four weeks to arrive. Shipping time is only estimated and not guaranteed.

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Package to USA will Shipping by E-Package with Tracking Number(7-15 Days to Delived). To other Countries will shipping by Post Air Mail without tracking number(ONLY when the order is over 20USD will supply Tracking Number Shipping Way!)(15-35 Days to Delived)

Items are shipped via China Post Air Mail.

Guarantee:

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If you are not satisfied when you receive your item, please return it within 7 days for a replacement or money back. Please contact me before you return it.

Not accept returning of electronic components.

Full refund after we receive our original item, Note: Return shipping is to be paid by the Buyer.

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