1. It provides capacitive coupling of a few picofarads between two nodes. 2. Capacitance ranges from picofarad to more than hundreds of farad. 3. Its subdivisions were invariably used, namely the microfarad, nanofarad and picofarad . 4. Picofarads of capacitance to ground limited bandwidth.5. A typical value of this capacitance is tens of picofarads that practically limits the output frequency to approximately 100 kHz. 6. Resistance is referred to in ohms ( ? ), capacitance is referred to in picofarad ( pF or " puff " ). 7. The picofarad is sometimes colloquially pronounced as " puff " or " pic ", as in " a ten-puff capacitor ". 8. Active probes are commonly seen by the circuit under test as a capacitance of 1 picofarad or less in parallel with 1 megohm resistance. 9. A " micro-microfarad " ( ??F, and confusingly often mmf or MMF ), an obsolete unit sometimes found in older texts, is the equivalent of a picofarad . 10. The prefix for this number is pico-, and is abbreviated as " p " ( for example, in electronics, one picofarad would be written as 1 pF ).
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