[ARC5] Collins xfmr ratings

[Brian Clarke]

This formula is 'unusual' - I am being polite; in Australia, we would use a 
shorter word. It cannot be calculated because the units are not current. 
What DC voltage? across the choke or across the load? Further, as inductance 
is involved, the frequency must be considered.

Langford-Smith gives a formula for Lcrit as equal to or greater than:
[Rs + Rl] / 6.pi.f
Where Rs is all the resistance in series with the diode, Rl is the load 
resistance and f is the supply frequency. This formula only applies to 
full-wave rectification.

He quotes Schade, O H (1943) 'Analysis of rectifier operation', Proc IRE 
31.7, July, p341.

73 de Brian, VK2GCE.

On Saturday, August 16, 2014 4:42 PM; Dennis claimed:


<snip>.
>
> I (crit) = DC voltage/L (choke inductance in henrys)
>
> Dennis D.  W7QHO
> Glendale, CA