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Term |
Definition |
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FARAD |
the base unit of capacitance - equal to the capacitance of a capacitor having an equal and opposite charge of 1 coulomb on each plate and a potential difference of 1 volt between the plates (Abbreviation - F). The Farad is a very large value, and is more commonly referred to as the pico-Farad (pF, 1 x 10-12 Farad), nano-Farad (nF, 1 x 10-9 Farad), micro-Farad (uF, 1 x 10-6 Farad), and (less common) milli-Farad (mF, 1 x 10-3 Farad) |
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FET (FIELD-EFFECT TRANSISTOR) |
either a Junction FET (JFET) or a Metal Oxide Semiconductor FET (MOSFET). It is a three-terminal semiconductor that acts either as an amplifier or digital switch. One of the major characteristics of a FET is that is has an extremely high input resistance and therefore, has no loading on previous circuitry. |
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FILTER |
a circuit which is frequency dependent. The "pass band" is the range of frequencies allowed through, and the "stop band" is that range of frequencies which are blocked |
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FILTERING |
a process used to remove or accentuate specific frequencies or frequency ranges of a signal |
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FLIP-CHIP |
An integrated circuit which is designed to electrically and mechanically interconnect by means of an appropriate number of bumps and is intended for facedown mounting. |
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FOREIGN MATERIAL |
Any material that is foreign to the microcircuit or package, or any non-foreign material that is displaced from its original or intended position within the microcircuit package. |
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FORWARD RECOVERY TIME |
The length of time required for a diode in its reverse biased (OFF) state to recover to a stabilized ON state after a digital forward bias voltage is applied. If this time is 50 nanoseconds or less, the diode is applicable for use in computers and/or high-speed logic circuits. |
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FREQUENCY (f) |
The number of cycles per second of an AC wave measured in hertz (Hz). |
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FULL-WAVE RECTIFIER |
A configuration of either two or four diodes that acts to change AC to
full-wave DC The two-diode configuration is used in conjunction with a
center-tapped secondary of a transformer. The four diode configuration is used
when no center-tap exists at the transformer secondary and is called a BRIDGE
RECTIFIER. |
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FUNCTIONAL CIRCUIT ELEMENTS |
Diodes, transistors, crossunders, capacitors, and resistors |
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FUNDAMENTAL FREQUENCY |
The lowest frequency of a complex AC waveshape represented by a single sine
wave. |
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FUSE |
A short strip of metal having extremely low resistance and functioning as a protective device in a circuit. A fuse will melt when its rated current is exceeded, thereby opening the circuit. |
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