Telecommunications: The sharp end

www.electronicsweekly.com | Jul 16, 1997

Richard Wilson looks at the problems of designing power supplies for telecommunications

http://www.electronicsweekly.com/Articles/1997/07/16/4334/telecommunications-the-sharp-end.htm

Power Supplies Custom built power supplies can be designed and manufactured to your exact...

Power Supplies Custom built power supplies can be designed and manufactured to your exact requirements. They can be single phase or three phase input, and AC or DC output.

http://www.transformers.uk.com/product09.htm

Majestic Transformer Co. - Catalogue - Page 7 - Kellysearch.co.uk B2B Online Product Catalogues

www.kellysearch.co.uk

LISTF FERRITE CORED TRANSFORMERS (SMPS) We can offer the full range of ferrite cored transformers and inductors utilising the Ferroxcube, Siemens, Thompson or MMG Neosid range of materials. Delivery lead times are dependant on stocks, however we are pleased to hold buffer stocks for regular items. THREE PHASE CONTROL TRANSFORMERS Three phase transformers, open style up to 125kVA rating. These transformers can be isolation type in accordance with the requirements of BS EN 61558, or auto wound in accordance with the requirements of BS 7452. A UDIO EQUIPMENT TRANSFORMERS & CHOKES We are able to manufacture mains and output transformers to your exact requirements. These can be finished either fully shrouded, as illustrated, or half shrouded for sub-chassis mounting. In addition, we are able to manufacture a full range of chokes for filters. CUSTOM BUILT POWER SUPPLIES Custom built power supplies can be manufactured to your exact requireme

http://www.kellysearch.co.uk/CatalogView.aspx?c=81068606&cn=1&b=KBD&l=81068606&cc=gb&v=0&i=7

Rail Products

C P Power & Automation Ltd offer power products complying with European Railway Standards such as EN50155 and ENV50121, which are either custom built to your exact specification, or modified from the standard ranges with a rail ruggedisation / compliance process.

http://www.cppowerautomation.com/rail.htm

Eastern Transformers and Equipment - Electrical Power Products

Single phase units have a high output ripple of 48% with conventional full wave bridge rectifiers. Three phase units have a much lower output ripple of 6% with conventional full wave bridge rectifiers. These values of ripple can be reduced to lower levels with output smoothing, where practical.

http://www.ete.co.uk/new_page22.htm