Toroidal Power Transformers
Power Transformers are made with tape wound cores. The tape wound
cores provide an almost perfect magnetic circuits to minimize losses,
fringing, leakage, distortion, and provide good magnetic shielding. It
also decreases the magnetization force required to produce a given flux
density. It is much more efficient than E-type lamination cores, but will
have somewhat higher cost as the windings need to be done on the core
itself, rather than on a bobbin. The tape material is made of insulated,
high permeability silicon iron, with a typical thickness of 4 mils ( 0.004").
Other materials types such as 50% nickel iron alloy, Molybdenum permalloy
or supermendor are also available with increased cost.
Coil Winding Specialist
(CWS) has designed a series of low cost standard tape wound transformers
as shown in the table "Toroidal
Power Transformer - How to order ". All these transformers are
designed to meet all international safety requirements ( UL, CSA, TUV,
etc). Customer can order these standard transformers in small quantities
for testing and prototyping.
Please click on the
link below to view the complete specifications and standard off the shelf
parts and ordering infromation.
- 10VA to
750VA Power levels
- Low magnetic
- Very low
no load losses and magnetizing current
- High Efficiency
due to the toroidal structure
- Meets UL,
CSA, VDE Requirements
breakdown: Over 3000V, 1 min between primary and secondary
System: Class B, 130°C
- Easy installation
with various input voltages: 100V, 110V, 117V, 120V, 220V, 230V,
240V. All in 50 - 400Hz
with single primary winding. Dual primary is available as an option
- 100% factory
tested for all parameters
hardware accessory options are
available upon request.
Hardwares include :-
Silicone rubber pads
Plastic washer (UL-94V0)
of the standardized transformers listed in the following table
can meet your needs, we can provide custom design to meet your
specific needs with a minimal NRE charge.
Power Transformers - How to order
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CWS reserves the right at any time and from time to time to make changes to design, technical specification, or construction of any product listed on this website without notice. CWS also reserves the right to discontinue or limit sale of any product or service available throughout this website on temporary or permanently basis without notice.
CWS highly recommends customers not to use its products offered on this website for inappropriate use and applications. Products should be tested for its suitability by prospective customers in all possible applications and conditions. Customers using or selling CWS products for use in other than recommended applications do so entirely at their own risk and agree to fully indemnify CWS from any damages arising or resulting from such use or sale.
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Updated July, 2013
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