Electronics Handbook/Devices/Filter/High Pass Filter

Configuration

 * High_pass_filter.svgHigh-pass_filter.png

Characteristics

 * $$\frac{V_o}{V_i} = \frac{R}{R + \frac{1}{j\omega C}} = \frac{j\omega T}{1 + j\omega T}$$
 * $$T = RC$$
 * $$\omega_o = \frac{1}{T} = \frac{1}{RC}$$

Characteristics

 * $$\frac{V_o}{V_i} = \frac{R}{R + \frac{1}{j\omega C}} = \frac{j \omega T}{1 + j\omega T}$$
 * $$T = \frac{L}{R}$$
 * $$\omega_o = \frac{1}{T} = \frac{1}{RC}$$

Summary
The two configurations above can be used for Low Pass Filter which has stable voltage which does not change with frequency over high range of frequencies