Ei Core Structure Electronic 220V-240V to 12V 18V 24V Transformer

• Application: Power, Electronic, Instrument, Lighting, Rectifier, Audio, UPS
• Phase: Single
• Core: Core-type Transformer
• Cooling Method: Dry-type Transformer
• Winding Type: Auto-transformer
• Certification: ISO9001-2000, ISO9001, CCC
• Model NO.: EI 41
• Usage: Single-phase Transformer, Rectifier Transformer, Power Transformer
• Frequency Characteristics: Low Frequency
• Shape of Core: EI
• Brand: OEM
• Primary: Customized
• Secondary: 12V,18V,24V,30V
• Capacity Range: 12W~24W
• Frequency: 50/60Hz
• Weight: 0.25kg
• Transport Package: Carton on Pallet
• Specification: EI-41
• Trademark: OEM
• Origin: China
• HS Code: 8504319000
• Production Capacity: 800000PCS/Month

Product Description

EI Core Structure Electronic 220V-240V to 12V 18V 24V Transformer

Audio transformer features:

• Used in audio products, for example, hi-fi equipment, power amplifier, loudspeaker are audio transformers.
• Usually C-core audio transformer and EI audio transformer would be better in sound effect.
• Welcome custom-designed transformers

Basic Data: 

• Input voltage: 100/120/220/230/240V (+/- 10%)
• Output power: 0.5VA - 2000VA
• Frequency: 50/60Hz
• Complies with: UL/CSA/European/CQC standards
• Audio equipment, small/medium/large home electric appliances
• Insulation grade: Class A, Class B, Class F
• various types are avaiable

Model Number	Power (VA)	Adjusting Rate(%)	Efficiency(%)	Exterior and Installing Dimension(mm)					Weight(kg)
				A	B	C	D	E
EI 28×12	0.5	30	71	30	31	27	40	-	0.068
EI 35×15	1.5	25	75	37	35	32	44	-	0.110
EI 41×16	3	20	78	43	42	35	54	-	0.165
EI 41×20	4	20	78	43	38	36	55	-	0.476
EI 48×24	8	18	80	50	42	42	60	-	0.588
EI 48×30	20	17.1	80.5	50	52	42	60	-	0.68
EI 57×24	22	17	80.8	59	47	50	72	-	0.69
EI 57×30	25	16.8	81.2	59	52	50	72	-	0.72
EI 57×37	35	16	82	59	62	50	72	-	0.887
EI 66×28	25	15.8	83	68	53	60	55	-	0.987
EI 66×36	37	15.8	84	68	65	60	55	-	1.586
EI 66×45	50	13	85.1	68	75	60	55	-	1.35
EI 76×33	60	12.9	85.5	78	56	68	65	-	1.3
EI 76×45	80	11.1	86	78	78	68	65	-	1.768
EI 76×65	140	11	86	78	94	68	65	-	1.976

Features: 
1) High efficiency, good silicon sheet & copper wire 
2) Low heat generation
3) 3 frames or full isolation bobbin
4) The cores are lapped by silicon steel sheet and treated by insulation 
5) Clean appearance and convenient installation
6) Reasonable and favorable price.

Application: 
This single-phase transformer is widely applied to the little power of DVD, hi-fi stereo, TV, small adaptor, beauty equipment, instruments and Apparatuses equipment, stage light, lighting control circuit, air-conditioning equipment control circuit, medical equipment, monitoring equipment, automation equipment control circuit, machinery and equipment, energy-efficient equipment, etc. 

Testing Items:
No-load Test(No-load Current, No-load Voltage, No-load Loss)
Load Test (Load Voltage, Temperature-rise)
Inductive Voltage Test, DC Resistance Test,  Safety Test

Operating environment:
1) Temperature: The ambient temperature can not over +40°C.
2) Altitude: Mounting location can not exceed the altitude of 2000m
3) Relative humidity: Maximum 90%
4) The site not attack by rain and snow
5) The medium which no explosion danger, no corroding metal, no electrical breakdown

Welcome OEM Transformers.
 

Please send the following information via e-mail for quote

• Specifications including bobbin, core, dimensiona and winding drawing
• Additional requirements
• Estimated order quantity

FAQ

Q1. Are you manufacturer in China?
  Yes, we have 20+ years experience in supplying transformers and inductors.

Q2. What is your MOQ?
  Usually our MOQ is 1000pcs.

Q3. Can I place a sample order?
  Yes, please kindly contact us for more details.

Q4. What's the delivery time for samples?
  Usually 3 - 6 working days.

Q5. What's the lead time for mass production?
  Normally 15-30 working days, based on your order quantity.

Q6. What's the payment term?
  We accept T/T, L/C, Western Union and Paypal etc.

Q7. Can you make customized products?
  Yes, of course. We will do as per customer's design.

Q8. Is OEM accepted?
  Yes, welcome OEM project. 

Q9. Is it ok to print my logo on the label? 
  No problem, we can make it as your designated.  

Q10. Can your factory print our brand on the product?
  Yes, we can add customer's logo/brand on the product with the authorization from customers.