## Electronics (Mike Jaroch)

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### F

#### FIELD-EFFECT TRANSISTOR

A transistor consisting of a source, a gate, and a drain. Current flow is controlled by the transverse electric field under the gate [7].

 Keyword(s): FIELD-EFFECT TRANSISTOR FET

#### FILAMENT

The cathode of a thermionic tube, usually a wire or ribbon, which is heated by current passing through it [6].

 Keyword(s): FILAMENT

#### FILM ICs

Conductive or nonconductive material deposited on a glass or ceramic substrate. Used for passive circuit components, resistors, and capacitors [14].

 Keyword(s): FILM ICs

#### FILTER

A selective network of resistors, capacitors, and inductors that offers comparatively little opposition to certain frequencies, while blocking or attenuating other frequencies [6] [9].

 Keyword(s): FILTER

#### FINAL POWER AMPLIFIER

The final stage of amplification in a transmitter [12].
 Keyword(s): FINAL POWER AMPLIFIER, FPA

#### FIRST DETECTOR

See MIXER [18].
 Keyword(s): FIRST DETECTOR

#### FIXED BIAS

A constant value of bias voltage [6] [7] [13].
 Keyword(s): FIXED BIAS

#### FIXED RESISTOR

A resistor having a definite resistance value that cannot be adjusted [1].
 Keyword(s): FIXED RESISTOR

#### FIXED SPARK GAP

A device used to discharge the pulse-forming network. A trigger pulse ionizes the air between two contacts to initiate the discharge [12].

 Keyword(s): FIXED SPARK GAP

#### FLAT LINE

A transmission line that has no standing waves. This line requires no special timing devices to transfer maximum power [10].

 Keyword(s): FLAT LINE

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