220V Auto Flyback Ee Core Silicon Steel Transformer 20W 30W

• Customization: Available
• Application: Power, Electronic, Instrument, Lighting, Rectifier, Audio, LED Lamp, Equipment
• Phase: Single
• Model NO.: GWHF
• Cooling Method: Dry-type Transformer
• Winding Type: Separated Winding Transformer
• Certification: ISO9001-2000, ISO9001, CCC, CE
• Usage: Pq Transformer for Microcomputer Equipment
• Frequency Characteristics: High Frequency
• Shape of Core: Grewin Pq High Frequency Transformer
• Brand: Grewin Pq High Frequency Transformer
• Electronic Transformer Color: Yellow, Black
• Frequency Electronic Transformer: Higher Than 20kHz- 200kHz
• Transformer Materials: High Magnetic Flux and Low Loss Magnetic Materials
• Electronic Transformer Application: PCB Circuits, Computer, TV, Monitor, Scanner
• Insulation: UL Insulation System for Class B (130), F (155)
• Magnetic Electronic Transformer: EPC Ep DC Power Magnetic Transformer
• Features: Low Transmission, Strong Anti-Interference, Dist
• RM Etd Ee Electronic Transformer: Windely Used Fax Machines, PBX
• Efd25 Epcs Ee65 RM10 Transformer: DC Magnetic Transformer for Electrical Microwave
• High Frequency Transformer Models Sereis: Ee, Etd, Efd, Er, Ep, Ec, RM, Pq, pH etc.
• Transport Package: Export Standard Carton with Strong Pallet
• Specification: VDE, CE
• Trademark: Grewin transformer
• Origin: Tianjin
• HS Code: 85045000
• Production Capacity: 100000 /Month

Product Description

Flyback Transformer Voltage Electrical Transformer for Power Switching supply

1. Their input voltage can be different to meet requirements of various regions: AC380V-240V-230V-220V-120V-110V-100V.

2. Special designs are also available to meet customers' requirements.

Power Capacity Chart:
Power range (W)Core type using N67* grade material
<5RM4; P11/7; EF12.6; U10
5-10E(F)16; RM5; P14/8
10-20RM6; E(F)20; P18; U15; EFD15
20-50RM8; P22; RM10 ETD29; E25; EFD20
50-100ETD29; ETD34; RM12; P30; EFD25
100-200ETD34; ETD39; ETD44; P36; E30; E42; EFD30
200-500ETD44; ETD49; E55
>500ETD54; ETD59; E65
PQ20. PQ32. PQ35 etc.

The power capacity of each core type varies due to differences in topology, operating frequency and temperature, flux density, and material grade.
* Siemens material grade 

ETD type Transformer Parameters

Model	Output power : W
ETD29	30-90
ETD34	30-90
ETD39	20-500
ETD44	20-800
ETD49	20-800
ETD59	400-2000

Other Related High Frequency Transformer Parameters:

Table1: EE type Transformer Parameters

 

EE type transformer
Part No.	Terminal   Pins	Dimension mm			Type	Electrical parameter
		A	B	C		Inductance	Output power(W)
EE-8.3	6	8.0	8.0	8.3	V	100.0uH	0.2-3.0
EE-10	8	11.5	10.2	10.2	V	80.0uH	0.5-5.0
EE-13	10	12.0	12.5	13.0	V	120.0uH	0.5-8.0
EE-16-1	6	14.8	13.3	16.0	V	90.0uH	1.0-10.0
EEL-16	10	28.5	16.0	21.9	V	600.0uH	2.0-15.0
EE-19-1	8	17.6	16.0	19.0	V	800.0uH	3.0-30.0
EEL19	10	31.5	16.0	21.1	V	1200.0uH	3.0-30.0
EE-25-1	6	20.0	18.2	25.2	V	2000.0uH	3.0-45.0
EEL25	8	35.3	17.5	25.2	V	2800.0uH	3.0-45.0
EE-30	10	21.0	29.2	30.0	H	900.0uH	3.0-50.0
EE-40	14	27.6	30.5	40.0	H	1500.0uH	3.0-55.0
EE-42/15-1	12	33.8	44.0	42.0	H	2000.0uH	3.0-80.0
EE-42/20-1	12	45.0	39.8	42.0	V	1900.0uH	3.0-90.0
EE-55	20	50.0	50.0	55.0	H	3000.0uH	3.0-150.0
EE-65	16	55.2	51.8	65.0	H	4500.0uH	3.0-300.0

 

Table2:EPC type Transformer Parameters

 

Model	Dimension (mm)			VA		Weight
	A	B	C	f=50KHz	f=100KHz	g
EPC-9.5	10	5.5	10	1.1	2.5	9
EPC-13	14	9	14	5	8	11
EPC-17	19	11	18	14	20	18
EPC-19	20	13	21	18	27	21
EPC-25	27	17	26	36	59	29
EPC-27	29	17	36	52	75	35

Table3: ER type Transformer Parameters
 

ER Transformer Specification
Model	PIN	Dimension
		A	B	C+/-0.5	D+/-0.5	E	F
ER25.5	8	19.5	19.7	12.5	4	5	25.5
ER28	12	30.5	23	17.5	4	5	31
ER28	12	23.1	28.2	25	4	5	29.1
ER28	12	36	27	20	4	5	30
ER28	12	26.3	37.1	30	4	5	30.2
ER33	14	37.5	28	22.5	4	5	36
ER35	14	43.5	28	22.5	4	5	35.5
ER35	16	29.1	40.3	35.4	4	5	40.3
ER39	16	46	31.1	25	4	5	43.1
ER39	16	33	41.5	30.85	4	7.5	42.3
ER40	16	48	31.1	25	4	5	43.1
ER4215	14	45.5	30	25	4	5	42
ER4220	14	44	37.5	36	4	5	42

Table4: PQ type Transformer Parameters
 

COILFORMER DIMENSIONS (mm)
TYPE	A	B	C	D	E	F	G	H	I	J	K	L	M	N	O
PQ20/16	23.15	17.35	23.15	20.3	2.5	9	3.8	5.1	17.9	9.7	7.82	10.8	2.4	0.6	7.35
PQ20/20	23.15	17.35	23.15	20.3	2.5	9	3.8	5.1	22	13.85	12	10.8	2.4	0.6	7.35
PQ26/20	26.6	21.85	29.75	25.4	-	12.3	3.8	7.6	21.5	11.05	9	14.2	2.4	0.65	7.2
PQ26/25	26.6	21.85	29.75	25.4	-	12.3	3.8	7.6	26.05	15.65	13.55	14.2	2.4	0.65	7.2
PQ32/20	32.15	26.7	34.3	30.5	-	13.85	5.1	7.6	22.35	11.05	8.9	15.9	2.8	0.75	7.2
PQ32/30	32.15	26.7	34.3	30.5	-	13.85	5.1	7.6	32.15	20.85	18.7	15.9	2.8	0.75	7.2
PQ35/35	35.00	31.0	39.0	-	-	15	-	-	37.4	-	22.4	16.9	-	1	5

1).Features:
 Has a strong anti-interference, distributed capacitance, impedance, attenuation of low transmission, firm
structure,can fine-tune the inductance, etc., are widely used in fax
machines, PBX.

 
2). Applicable frequency range: 20 to 100kHz :
Operating frequency: higher than 200kHz
High magnetic flux and low loss magnetic materials
With low leakage inductance and high efficiency .

 3).Applications:

 1.PCB circuits
2.,computer, TV,
3.monitor, scanner,
4.duplicator, mobile adapters,
5.printer and other equipments and
instruments.
UL insulation system for Class B (130), F (155), H (180)

4). Can make other customized Ferrite transformers:

Power range: core type using N67 grade material
<5: RM4, P11/7, EF12.6 and U10
5 to 10: E (F) 16, RM5 and P14/8
10 to 20: RM6, E (F) 20, P18, U15 and EFD15
20 to 50: RM8, P22, RM10 ETD29, E25 and EFD20
50 to 100: ETD29, ETD34, RM12, P30 and EFD25
100 to 200: ETD34, ETD39, ETD44, P36, E30, E42 and EFD30
200 to 500: ETD44, ETD49 and E55
>500: ETD54, ETD59 and E65


Table4: EFD type Transformer Parameters

Model	Pin	Dimension
		A	B	C	D	E
EFD-12	8	6	17	20	3.0	13.5
EFD-15	10	7.3	18.2	21.35	2.5	15
EFD-15	10	7.5	19.3	22.6	3.0	16.7
EFD-20	10	9.4	25.3	27.7	3.75	21.7
EFD-20	12	9.7	24	26.8	3	20
EFD-25	10	13.4	29.7	35.4	5	25
EFD-25	10	12.6	29.7	31.5	5	25
EFD-30	12	12.6	31.6	35.5	5	30

5)Advantage:
1.UL, CUL, CE,IEC ISO9001:2015
2.We offer custom-made transformers, OEM and ODM are welcome
3.We deliver the quality you expect at consistently competitive prices
4.Transformer quality lifetime:10 Years.
5.Specialty Sales service:5 -10 Years
6.Transformers Test: 100% test before the shipment

1).Features:

 Has a strong anti-interference, distributed capacitance, impedance, attenuation of low transmission, firm

structure,can fine-tune the inductance, etc., are widely used in fax

machines, PBX.

2). Applicable frequency range: 20 to 100kHz :

Operating frequency: higher than 200kHz
High magnetic flux and low loss magnetic materials
With low leakage inductance and high efficiency .

 3).Applications:

PCB circuits, computer, TV, monitor, scanner, duplicator, mobile adapters, printer and other equipments and instruments.UL insulation system for Class B (130), F (155), H (180).

4). Can make other customized Ferrite transformers:

Power range: core type using N67 grade material
<5: RM4, P11/7, EF12.6 and U10
5 to 10: E (F) 16, RM5 and P14/8
10 to 20: RM6, E (F) 20, P18, U15 and EFD15
20 to 50: RM8, P22, RM10 ETD29, E25 and EFD20
50 to 100: ETD29, ETD34, RM12, P30 and EFD25
100 to 200: ETD34, ETD39, ETD44, P36, E30, E42 and EFD30
200 to 500: ETD44, ETD49 and E55
>500: ETD54, ETD59 

5)Technical capabiliies:

Over 50 sets toroidal/annular coil winding machines, 3 EI type transformer lines,2 sets of vacuum annealing furnaces.
6)Advantage:
1.UL, CUL, CE, ISO9001:2008
2.We offer custom-made transformers, OEM and ODM are welcome
3.We deliver the quality you expect at consistently competitive prices
4.Transformer quality lifetime:10 Years.
5.Specialty Sales service:5 -10 Years
6.Transformers Test: 100% test before the shipment

7)About us:

1). Tianjin Grewin Technology Co.,ltd. has always laying great emphasis on our core business philosophy "Quality and Honesty First ".

2)product procedure:
The following picture showed you about all finished transformer production line and package with export standard carton and strong pallets:



3).Terms of Shipment:
Within 10 working days after received related prepayment or L/C.
 

4).Payment terms:

(1). T/T 100% or 50% deposit by T/T in advance, balance amount to be paid 7 days before

delivery.

(2). By irrevocable L/C at sight, to be issued immediately against confirmed order.

(3). Payment by T/T, if order amount is less than USD 20,000.

5).Flow chart of trading activities:
 

NO	Step	Days need
1	Request for quotation	1 day
2	Making quotations	1 day
3	Offer and counter offer	3 days
4	Sending and receiving samples	3-10 days
5	Sample confirmation	3 days
6	Placing a firm order	1 day
7	Paying and receiving the down payment	1-4 day
8	Factory production & Quality inspection	15-20 days
9	Paying and receiving the balance	4 days
10	Delivery of goods	1 days

PLZ Contact us:

TIANJIN GREWIN TECHNOLOGY CO.,LTD

Tel: [phone]
 
Web: transformer.en.made-in-china.com