Electronics Calculations Data Handbook

8

Voltage dividers

Introduction

Figure 8.1 shows a voltage divider. It is used everywhere in electronics to reduce the level of AC and/or DC voltages. The attenuation, input resistance and output resistance are as follows:

Figure 8.1 A voltage divider

(8.1)

(8.2)

(8.3)

(8.4)

All of these parameters are given in Table 8.1 for various combinations ...