RC ACTIVE TERTIARY LOWWPASS NOTCH FILTER

摘要

PURPOSE:To obtain an easy-designing RC active tertiary low-pass notch filter suited to economization with use of a single amplifier and several units of resistances and capacities. CONSTITUTION:The RC active tertiary low-pass notch filter consists of a single unit of amplifier A plus several units of resistances R1-R8 and capacities C1-C4. In such filter, resistance value R1-R8 are determined capacity value C1-C4 plus the parameter of the transmission function of the desired tertiary low-pass notch filter. Accordingly, the resistance value used to the circuit can be obtained easily. Furthermore, the filter features an easy designing with the number of the using capacity reduced by 1 or 2 units, thus realizing a high degree of economization.