11-11-2012, 05:36 PM
(This post was last modified: 11-11-2012, 05:37 PM by Radio Fixer.)
Its well explained but I think being in his class for days on end would be a bit of a strain.
Not mentioned was transformer derating: http://www.hammondmfg.com/pdf/5c007.pdf
Voltage douber isnt given but to me the derating would be the same as half wave, into capacitive load, as effectively thats what a doubler is and stacking the cap voltages. So for HW and Doubler I DC can only 0.28 of the transformer rated current. Lets say that is 1A then I DC can only be a max of 280 mA.
F. Langford Smith in Radio Designers Handbook says transformers get very much hotter when rectification takes place on the secondary compared to it supplying just AC into the load. “This severe heating is due to the poor form factor of the rectified current”.
Gary
Not mentioned was transformer derating: http://www.hammondmfg.com/pdf/5c007.pdf
Voltage douber isnt given but to me the derating would be the same as half wave, into capacitive load, as effectively thats what a doubler is and stacking the cap voltages. So for HW and Doubler I DC can only 0.28 of the transformer rated current. Lets say that is 1A then I DC can only be a max of 280 mA.
F. Langford Smith in Radio Designers Handbook says transformers get very much hotter when rectification takes place on the secondary compared to it supplying just AC into the load. “This severe heating is due to the poor form factor of the rectified current”.
Gary
