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SMPS transformer winding costs?

eem2am

Aug 3, 2009
429
Joined
Aug 3, 2009
Messages
429
Hello,

Considering the following SMPS transformer winding configurations (each one is for the same applicatrion)
………….what would be the cost difference for these configurations?
(i.e. the cost of getting each manufactured?)

Am I right in presuming that , for example, 1. would be significantly cheaper than 2. ?





1.
[CORE] (PRIMARY) //// (SECONDARY)

2.
[CORE] (PRIMARY) //// (SECONDARY) //// (AUXILIARY COIL)

3.
[CORE] (PRIMARY) // (AUXILIARY COIL) //// (SECONDARY)

4.
[CORE] (1/2 PRIMARY) //// (SECONDARY) //// (AUXILIARY COIL) // (1/2 PRIMARY)



where:-
//// = 3500V mains isolation barrier
// = single layer of tape
 

Militoy

Aug 24, 2010
180
Joined
Aug 24, 2010
Messages
180
1. will take less labor time winding, lead finish, etc - but it's a moot point, if the aux winding is necessary to your circuit - or if you need the lower leakage inductance you'll get from configuration 4.
 
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