| 摘要 |
#CMT# #/CMT# The sawtooth generating method involves providing a voltage reference source (74), where a summing-up amplifier is provided. Elements with switched capacitors are provided, and are parallelly coupled between the voltage reference source and summing-up amplifier. A pre-determined number of elements with switched capacitors are selectively activated. #CMT# : #/CMT# An independent claim is also included for a sawtooth generator circuit. #CMT#USE : #/CMT# Sawtooth generating method. #CMT#ADVANTAGE : #/CMT# The elements with switched capacitors are provided, and are parallelly coupled between the voltage reference source and summing-up amplifier, where the pre-determined number of elements with switched capacitors is selectively activated, and hence ensures improved and accurate sawtooth generating method. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic circuit diagram of a sawtooth generator circuit. 60 : Sawtooth generator circuit 62,64,66,68,70,72 : Unit elements 74 : Voltage reference source 76 : Operational amplifier 78 : Feedback capacitor 80 : Output. |
