mfd.

abbreviation for

mfd

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Next connect the plate of the tube with one end of the .001 mfd.

Now connect one end of the secondary coil to one post of a .001 mfd.

Since the farad is far too large for practical purposes a millionth of a farad, or microfarad, whose symbol is mfd., is used.

Now connect one end of the secondary coil, or rotor, of the variocoupler with one post of the .0005 mfd.

Likewise connect the other loading coil in one side of the closed, or secondary circuit between the variable .0007 mfd.

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