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12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers

Hangzhou Udwells Technology Co., Ltd.
  • Audited Supplier
  • 2 yrs

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Product Highlights

  • Wide Voltage Range: Supports 12V, 50V, 110V, and 220V input/output configurations.
  • Low Frequency Design: Optimized for low frequency applications in audio amplifiers and instruments.
  • Toroidal Core Type: Ring-shaped core design ensures high efficiency and low magnetic interference.
  • Extensive Power Options: Available from 0.3VA up to 2000VA to suit various load requirements.
  • Full Customization: Offers flexible customization from samples, designs, and full specifications.
  • ISO9001 Certified: Manufacturing process adheres to ISO9001 quality management standards.
  • Dry Type Cooling: Uses dry-type transformer cooling for safe and reliable operation.
  • Multi-winding Capability: Supports multi-winding configurations for complex power distribution needs.

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Product Images of 12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers

12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers pictures & photos
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers pictures & photos
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers pictures & photos
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers pictures & photos
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers pictures & photos
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers pictures & photos
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
  • 12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
  • 12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
    12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
  • 12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
    12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
  • 12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
    12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
  • 12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
    12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
  • 12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
    12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
  • 12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
    12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers

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Product Description

Please click bellow CONTACT US image for more information and quotation.

12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
Specification
Output Power
Size(unit:mm)
Install PIC
A
B
C
D
E
F
EI-28x11.5
0.3VA-1.8VA
29. 5
40.0
49.0
25.4
27.0
Φ3.5x5.0
A
27.0
38.0
46.5
25.4
30.0
Φ3.5x5.0
B
EI-35x11.5
0.8VA-2.1VA
36.5
45.0
63.0
29.8
31.5
Φ3.5x5.0
A
31.5
40.0
58.0
29.8
37.0
Φ3.5x5.0
B
El-35x13.5
1.0VA-2.7VA
36.7
45.0
55.0
33.2
31.7
Φ3.5x5.0
A
31.0
40.0
50.0
33.2
37.3
Φ3.5x5.0
B
El-35x15.5
1.5VA-3.5VA
37.0
46.0
55.0
34.2
33.0
Φ3.5x6.5
A
31.0
40.0
50.0
34.2
37.5
Φ3.5x6.5
B
El-35x17.5
2.5VA-4.5VA
37.0
46.0
55.0
36.5
33.0
Φ3.5x6.5
A
31.0
40.0
50.0
36.5
37.5
Φ3.5x6.5
B
El-41x16.5
2.0VA-4.5VA
42.7
53.0
62.0
36.5
36.0
Φ4.0x6.5
A
35.0
46.0
55.0
36.5
43.2
Φ4.0x6.5
B
El-41x20.5
3.0VA-6.0VA
42.7
52.5
62.5
41.2
35.5
Φ4.0x6.5
A
34.5
46.0
56.0
41.2
43.0
Φ4.0x6.5
B
El-41x24.5
5.0VA-8.5VA
42.7
53.0
62.3
49.0
36.0
Φ4.0x6.5
A
34.5
46.0
57.0
49.0
43.0
Φ4.0x6.5
B
El-41x26.5
6.0VA-10.0VA
42.7
53.0
62.3
52.0
36.0
Φ4.0x6.5
A
34.5
46.0
57.0
52.0
43.2
Φ4.0x6.5
B
El-48x20.5
6.0VA-10.0VA
49.7
61.0
69.5
40.0
43.5
Φ4.0x7.5
A
42.0
53.0
63.5
40.0
51.0
Φ4.0x7.5
B
El-48x25.5
10.0VA-15.0VA
50.0
61.0
70.0
42.0
44.0
Φ4.0x7.0
A
42.0
53.0
63.5
42.0
51.0
Φ4.0x7.0
B
El-48x30.0
14.0VA-20.0VA
49.7
61.0
73.0
54.4
43.5
Φ4.0x7.0
A
42.0
53.0
63.0
54.4
51.0
Φ4.0x7.0
B
El-48x35.0
16.0VA-25.0VA
50.0
61.0
74.0
58.5
43.8
Φ4.0x7.0
A
42.0
53.0
65.0
58.5
51.0
Φ4.0x7.0
B
El-54x24.0
12.0VA-17.0VA
56.0
72.0
86.6
49.4
46.8
Φ4.0x7.0
A
45.0
62.0
75.6
49.4
58.0
Φ4.0x7.0
B
El-54x28.0
18.0VA-25.0VA
56.0
72.0
86.0
49.4
48.5
Φ4.0x7.0
A
45.0
62.0
76.0
49.4
58.0
Φ4.0x7.0
B
El-54x30.0
20.0VA-27.0VA
56.0
72.0
86.2
49.8
47.0
Φ4.0x7.0
A
45.0
62.0
76.0
49.8
58.0
Φ4.0x7.0
B
El-57x19.0
8.0VA-12.0VA
59.0
71.0
83.5
41.0
50.5
Φ5.0x8.0
A
50.0
62.0
77.6
41.0
61.0
Φ5.0x8.0
B
El-57x24.5
12.0VA-20.0VA
59.5
71.0
85.6
49.8
49.6
Φ5.0x8.0
A
50.1
62.0
73.5
49.8
61.0
Φ5.0x8.0
B
El-57x30.0
El-57x30.0
59.0
71.0
85.6
52.7
50.4
Φ5.0x8.0
A
49.9
62.0
77.6
52.7
60.0
Φ5.0x8.0
B
El-57x35.0
30.0VA-38.0VA
59.5
71.0
83.5
59.0
52.0
Φ5.0x8.0
A
49.8
62.0
73.5
59.0
61.0
Φ5.0x8.0
B
El-57x40.0
33.0VA-43.0VA
59.5
71.0
83.5
64.0
52.0
Φ5.0x8.0
A
49.8
62.0
73.5
64.0
61.0
Φ5.0x8.0
B
EI-60x25.0
16.0VA-22.0VA
62.2
72.0
83.0
50.0
53.0
Φ5.0x8.0
A
51.0
62.0
74.5
50.0
63.3
Φ5.0x8.0
B
El-60x30.0
22.0VA-33.0VA
62.2
72.0
84.0
53.0
54.2
Φ5.0x8.0
A
51.5
62.0
75.0
53.0
63.5
Φ5.0x8.0
B
El-66x28.0
22.0VA-30.0VA
68.2
82.0
98.0
56.0
58.3
Φ5.0x8.0
A
58.0
71.0
83.6
56.0
70.4
Φ5.0x8.0
B
El-66x32.0
33.0VA-40.0VA
68.2
82.0
94.3
60.0
58.3
Φ5.0x8.0
A
58.1
71.0
84.0
60.0
70.0
Φ5.0x8.0
B
El-66x36.0
40.0VA-55.0VA
68.2
82.0
98.5
65.0
57.8
Φ5.0x8.0
A
58.0
71.0
83.5
65.0
71.0
Φ5.0x8.0
B
El-66x40.0
55.0VA-65.0VA
68.2
81.0
94.0
75.0
58.0
Φ5.0x8.0
A
58.0
72.0
83.5
75.0
71.0
Φ5.0x8.0
B
El-66x45.0
65.0VA-80.0VA
68.2
82.0
93.0
80.0
58.0
Φ5.0x8.0
A
58.1
71.0
82.5
80.0
72.0
Φ5.0x8.0
B
El-76x35.0
35.0VA-65.0VA
78.5
90.0
101.0
65.0
67.5
Φ5.0x8.0
A
66.5
81.0
95.0
50.0
80.5
Φ5.0x8.0
B
El-76x40.0
55.0VA-80.0VA
79.0
92.0
104.0
70.0
66.9
Φ5.0x8.0
A
66.5
81.0
95.0
70.0
81.0
Φ5.0x8.0
B
El-76x42.5
70.0VA-100.0VA
79.0
92.0
105.0
75.0
68.0
Φ5.0x8.0
A
66.5
81.0
95.0
75.0
81.0
Φ5.0x8.0
B
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
Specification
Output power
Size(unit:mm)
Install PIC
A
B1
B2
C
D
E
F
EI-76x56.0
90.0VA-150VA
76.0
64.0
74.0
86.0
95.0
69.0
Φ5.0x8.0
C
63.5
50.5
74.0
86.0
95.0
78.0
Φ5.0x8.0
D
EI-76x66.0
120VA-190VA
76.0
64.0
84.0
96.0
105.0
69.0
Φ5.0x8.0
C
63.5
50.5
84.0
96.0
105.0
78.0
Φ5.0x8.0
D
EI-86x43.0
70.0VA-120VA
86.0
71.0
68.0
83.0
75.0
71.5
Φ5.0x8.0
C
71.5
57.0
68.0
83.0
75.0
87.0
Φ5.0x8.0
D
EI-86x45.0
110VA-150VA
86.0
71.0
70.0
85.0
80.0
72.0
Φ5.0x8.0
C
71.5
57.0
70.0
85.0
80.0
87.0
Φ5.0x8.0
D
EI-86x55.0
130VA-200VA
86.0
71.0
80.0
95.0
85.0
73.0
Φ5.0x8.0
C
71.5
57.0
80.0
95.0
85.0
88.0
Φ5.0x8.0
D
EI-96x32.0
55VA-80VA
96.0
80.0
57.0
72.0
55.0
82.0
Φ5.0x8.0
C
80.0
64.0
57.0
72.0
55.0
96.5
Φ5.0x8.0
D
EI-96x40.0
100VA-150VA
96.0
80.0
65.0
80.0
65.0
82.0
Φ5.0x8.0
C
80.0
64.0
65.0
80.0
65.0
96.5
Φ5.0x8.0
D
EI-96x45.0
130VA-180VA
96.0
80.0
70.0
85.0
70.0
82.0
Φ5.0x8.0
C
80.0
64.0
70.0
85.0
70.0
96.5
Φ5.0x8.0
D
EI-96x50.0
160VA-220VA
96.0
80.0
75.0
90.0
75.0
82.0
Φ5.0x8.0
C
80.0
64.0
75.0
90.0
75.0
96.5
Φ5.0x8.0
D
EI-96x56.0
200VA-250VA
96.0
80.0
82.0
97.0
82.0
82.0
Φ5.0x8.0
C
80.0
64.0
82.0
97.0
82.0
96.5
Φ5.0x8.0
D
EI-105x38.0
90.0VA-130VA
105.0
87.5
56.0
68.0
63.0
91.0
Φ5.0x10.0
C
87.5
70
56.0
68.0
63.0
105.0
Φ5.0x10.0
D
El-105x56.0
130VA-280VA
105.0
87.5
74.0
86.0
81.0
91.0
Φ5.0x10.0
C
87.5
70
74.0
86.0
81.0
105.0
Φ5.0x10.0
D
EI-114x50.0
200VA-260VA
114.0
95.0
78.0
94.0
90.0
96.0
Φ5.0x10.0
C
96.0
77.0
78.0
94.0
90.0
114.0
Φ5.0x10.0
D
El-114x60.0
250VA-360VA
114.0
95.0
88.0
104.0
110.0
96.0
Φ5.0x10.0
C
96.0
77.0
88.0
104.0
110.0
114.0
Φ5.0x10.0
D
EI-114x70.0
350VA-500VA
114.0
95.0
98.5
114.5
120.0
96.0
Φ5.0x10.0
C
96.0
77.0
98.5
114.5
120.0
114.0
Φ5.0x10.0
D
EI-133x50.0
250VA-360VA
133
111
75
100
105
111
Φ5.0x10.0
C
111
89
75
100
105
133
Φ5.0x10.0
D
EI-133x60.0
300VA-600VA
133
111
85
110
115
111
Φ5.0x10.0
C
111
89
85
110
115
133
Φ5.0x10.0
D
EI-133x70.0
500VA-800VA
133
111
95
120
120
111
Φ5.0x10.0
C
111
89
95
120
120
133
Φ5.0x10.0
D
EI-152x50.0
400VA-600VA
152
127
82
110
113
127
Φ6.0x15.0
C
127
102
82
110
113
152
Φ6.0x15.0
D
El-152x60.0
500VA-800VA
152
127
92
120
123
127
Φ6.0x15.0
C
127
102
92
120
123
152
Φ6.0x15.0
D
El-152x70.0
700VA-1000VA
152
127
102
130
133
127
Φ6.0x15.0
C
127
102
102
130
133
152
Φ6.0x15.0
D
El-162x50.0
500VA-700VA
162
135
84
113
115
135
Φ6.0x18.0
C
135
108
84
113
115
162
Φ6.0x18.0
D
El-162x60.0
700VA-900VA
162
135
94
123
125
135
Φ6.0x18.0
C
135
108
94
123
125
162
Φ6.0x18.0
D
El-162x70.0
800VA-1200VA
162
135
104
130
133
135
Φ6.0x18.0
C
135
108
104
130
133
162
Φ6.0x18.0
D
El-162x85.0
1000VA-1800VA
162
135
120
145
150
135
Φ6.0x18.0
C
135
108
120
145
150
162
Φ6.0x18.0
C
El-162x90.0
1600VA-2000VA
162
135
125
150
155
135
Φ6.0x18.0
D
135
108
125
150
155
162
Φ6.0x18.0
C

Please click bellow CONTACT US image for more information and quotation.
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
Specification
Ⅰ. Specifications and Selection
1 Q: We need a 220V to 12V step down transformer. What specifications will be needed for production?
A: Please provide the following key parameters, the more detailed the better:
Input Voltage (Primary Voltage): For example, AC 220V. Is there an allowable fluctuation range (e.g. ±10%)?
Output Voltage and Current (Secondary Voltage & Current): For example, AC 12V, what current (A) or power (VA/W) is needed? If there are multiple output groups, please list the voltage current of each group.
Rated Power (Rated Power): The unit is VA (volt-ampere) or W (watt). This is one the most important parameters, determining the transformer's load-carrying capacity.
Frequency (Frequency): 50Hz or 60Hz?
Construction (Construction): Is it toroidal, EI type (frame-type), or R-type? Is there a special installation method (such vertical, horizontal, with a base, with a cover)?
Insulation Grade (Insulation Class): For example, Class A (105°C), Class (120°C), Class B (130°C), which is related to the transformer's heat resistance and lifespan.
 
2. Q: What is the difference between the power unit VA and W? How should I choose?
A: For purely resistive loads (such light bulbs, heating tubes), VA ≈ W. For inductive or capacitive loads (such as motors, appliances), W (real power) < VA ( power). To ensure safety, please select according to the apparent power (VA) of the load and leave a margin of 20%-30%. For example, 100W motor, it is recommended to choose a transformer of 120VA-150VA.
 
3. Q: Toroidal transformer or traditional EI transformer, which one should I choose?
A: The main differences are as follows, please choose according your priorities:
Characteristics
Toroidal transformer
EI Transformer
Efficiency
High (no air gap in magnetic circuit)
Lower
Leakage Magnetism/ Interference
Very little (magnetic field enclosed)
Larger
Volume and Weight
Smaller and lighter (for the same power)
Larger and heavier
Production Process
More complex
Mature and simple, easy to maintain
Application Scenarios
High-end audio, precision instruments occasions with high EMI requirements
General industrial equipment, conventional power supplies, cost-sensitive applications
Cost
Higher
Lower, cost-effective

Please click bellow CONTACT US image for more information and quotation.
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers
12V 50 0 50V 110V 220V Low Frequency Laboratory Power Supply Toroidal Transformer for Audio Amplifiers

About the Supplier

This supplier has been audited by TÜV Rheinland. Verify the report on the official TÜV Rheinland website with ID "MIC-ASI2431790". Items marked "verified" are certified.

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Hangzhou Udwells Technology Co., Ltd.
Hangzhou Udwells Technology Co., Ltd.
Hangzhou Udwells Technology Co., Ltd.
Hangzhou Udwells Technology Co., Ltd.
Hangzhou Udwells Technology Co., Ltd.
Hangzhou Udwells Technology Co., Ltd.
Hangzhou Udwells Technology Co., Ltd.
Hangzhou Udwells Technology Co., Ltd.

About Our Factory & Business Background

verified Business Type
Manufacturer/Factory & Trading Company
Address
Room 2412, Building 9, Ideal Yintai City, Nanyuan Street, Linping District, Hangzhou, Zhejiang, China
verified Plant Area
80 square meters
verified Number of Employees
3
verified Registered Capital
500,000 RMB
verified Terms of Payment
T/T
verified International Commercial Terms(Incoterms)
FOB, EXW, CIF
verified Average Lead Time
Peak Season Lead Time: within 15 workdays, one month
Off Season Lead Time: within 15 workdays, one month
verified Nearest Port
Shanghai Port, Ningbo Port
verified Minimum Order Quantity
2000 Pcs
verified Supply Chain Partners
5

Our Production Capability & Technical Expertise

verified Main Products
LED Driver, Transformer
verified Production Lines
27
verified Production Machines
PCBA Line, Assembling Line, Winding Machine
verified QA/QC inspectors
1 people
verified Inspection Type for Finished Products
100% inspection(Visual inspection & Function inspection)
verified Inspection Method for Finished Products
Have instruction but no written records
verified Customization Options
Customization from Samples, Customization from Designs, Full Customization, Flexible customization, Minor Customization
verified ODM Service Available
Yes
verified OEM Service Available
Yes
verified R&D Engineers
1 people
verified Traceability of Raw Materials
Yes

Our Industry Experience & Global Business Record

verified Year of Establishment
2021-11-11
verified Export Year
3 Years
verified Main Markets
Europe
verified Repeat Buyers Choice
80%~100%
verified Number of Foreign Trading Staff
3
verified Overseas Agent/Branch
No
verified New Products Launched in Last year
Yes

Our Certifications, Standards & Industry Recognition

verified Cooperated with Fortune 500
No

FAQ

What specifications are needed for a 220V to 12V step down transformer?
Please provide Input Voltage with fluctuation range, Output Voltage and Current, Rated Power (VA/W), Frequency (50Hz/60Hz), Construction type (Toroidal/EI/R), Installation method, and Insulation Grade.
What is the difference between VA and W?
For resistive loads, VA equals W. For inductive or capacitive loads, W is less than VA. Select based on apparent power (VA) and leave a 20%-30% margin for safety.
Which should I choose: Toroidal or EI transformer?
Toroidal transformers offer high efficiency, low leakage, and low interference, suitable for high-end audio. EI transformers are smaller, lighter, cheaper, and easier to maintain for general industrial use.
What are the available power ranges?
The product range spans from 0.3VA to 2000VA, covering various models like EI-28 to El-162 series.
Is customization available for this transformer?
Yes, full customization is available including options from samples, designs, and flexible minor customization.
What is the minimum order quantity?
The minimum order quantity is 2000 pieces.
What are the lead times for production?
Lead time is within 15 workdays or one month for both peak and off-peak seasons.
What payment terms are accepted?
The accepted payment term is T/T (Telegraphic Transfer).

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