The circuit shown in figure 1 uses only resistors and capacitors. Frequencies up the calculated value passes without attenuation. The frequencies under the calculated value are blocked.
Formula 1
High-Pass Filter:
f = 1 / (2 x π x R x C)
Where:
f is the frequency in hertz (Hz)
R is the resistance in ohm (Ω)
C is the capacitance in farads (F)
π is 3.1416