[AMRadio] Swinging chokes

[Donald Chester]

Remember ,  the critical inductance is what it takes to  maintain the filter 
status as choke input.  Below the critical inductance it behaves like a 
capacitor input.  The optimum inductance, under full load, is approxyimately 
twice the critical inductance.  With less than optimum inductance, the peak 
rectifier current is  greatly increased.  So you want a swinging choke that 
maintains at  least critical inductance at idling current (bleedr only) and 
optimum inductance at full  load.  The formulae for calculating these shoulb 
be available in any handbook that goes back early enough to feature tube 
type rectifier circuit theory.

Don K4KYV

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