Capacitance values may be expressed in microfarads (uf), nanofarad (nf) or picofarads (pf). The conversion
between these units are shown on the table above.
Electrolytic Capacitors
Electrolytic capacitors are cylindrical in construction. Unlike ceramic capacitors, electrolytic capacitors
USUALLY/MOSTLY have polarity. One side is marked with the (-) sign, also called the cathode, or negative side.
Just like ceramic capacitors, they are also measured in microfarads (uf) and have a maximum voltage rating.
WARNING: It is VERY IMPORTANT not to insert them backwards, or in the wrong polarity orientation. Doing so
may cause the capacitor to explode. Do not the let the small size fool you. Even a small capacitor can explode
with a lot of force.
All of the electrolytic capacitors used in the VU Meter Kit have polarity.
Voltage Regulator
The VU Meter Kit uses an on-board voltage regulator, limiting the supplied DC voltage to the VU Meter chip to
+18V. This means, you can connect this VU Meter Kit to power supply greater than +18V, for example: +24V
or higher. I would suggest though that keep the input voltage to the VU Meter Kit under +25V.
