[AMRadio] [AM Radio] Something strange


Larry Szendrei ne1s at securespeed.us
Thu Nov 20 13:56:17 EST 2014


On 11/20/14 5:51 AM, Rob Atkinson wrote:
> I don't understand how lifting the CT ground kills the B+ Rob K5UJ

In a typical vacuum-tube full-wave rectified HV supply the CT of the HV 
secondary is the negative lead of the DC output. So letting the CT float 
breaks the circuit in the negative lead.

Strictly speaking, it kills the B- ;-)

73,
-Larry/NE1S


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