RChøypassfilter
RChøypassfilter, often written as RC højpassfilter in Scandinavian contexts, refers to a first‑order RC high‑pass filter used to attenuate low-frequency components while passing higher frequencies. The passive form typically consists of a capacitor in series with the input and a resistor to ground, with the output taken across the resistor. This configuration allows AC signals above a chosen cutoff to appear at the output while blocking DC and very low frequencies.
The transfer function of the standard RC high‑pass is Vout/Vin = ZR / (ZC + ZR) = R / (1/(jωC) + R)
Design considerations include component tolerances, loading effects, and the need to buffer the stage if the
Applications span DC blocking, audio signal conditioning, sensor interfacing, and front‑end coupling networks where unwanted low‑frequency