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field coil frequency question
field coil frequency question
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Old 21st February 2011, 04:46 AM   #1
j.michael droke is offline j.michael droke  United States
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Join Date: Jan 2009
Default field coil frequency question

Hi there: What is an appropreate frequency for a field coil power supply (field coil louadspeaker? ...regards, Michael
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Old 21st February 2011, 06:50 AM   #2
sreten is offline sreten  United Kingdom
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Location: Brighton UK
Hi, ????!, 0 Hz, i.e. DC, rgds, sreten.

FWIW some old record players used the field coil as the choke in the power
supply, this of course means the rest of the circuitry had to be pure class A.

Last edited by sreten; 21st February 2011 at 06:53 AM.
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