核电子学与探测技术
覈電子學與探測技術
핵전자학여탐측기술
NUCLEAR ELECTRONICS & DETECTION TECHNOLOGY
2013年
9期
1062-1064,1088
,共4页
吴寿勇%任家富%侯国利%陶永莉
吳壽勇%任傢富%侯國利%陶永莉
오수용%임가부%후국리%도영리
脉宽调制%可编程计数器阵列%高压电源%倍压整流占空比
脈寬調製%可編程計數器陣列%高壓電源%倍壓整流佔空比
맥관조제%가편정계수기진렬%고압전원%배압정류점공비
pulse width modulation%programmable counter array%high-voltage power%duty cycle
介绍了一种基于单片机产生脉宽调制( PWM)波的高压稳压电源设计,主要用于盖革-弥勒计数器的高压偏置源。由配置C8051 f020的可编程计数器阵列PCA产生矩形控制信号,选用变压器隔离正激式变换拓扑结构和倍压整流电路。经过实验测试,当PWM波的占空比为55%时,输出高压400 V,系统功耗155 mW,电压稳定度小于0.5%,纹波小于100 mV。电源性能稳定可靠,可用于γ辐射仪探测器的高压偏置源。
介紹瞭一種基于單片機產生脈寬調製( PWM)波的高壓穩壓電源設計,主要用于蓋革-瀰勒計數器的高壓偏置源。由配置C8051 f020的可編程計數器陣列PCA產生矩形控製信號,選用變壓器隔離正激式變換拓撲結構和倍壓整流電路。經過實驗測試,噹PWM波的佔空比為55%時,輸齣高壓400 V,繫統功耗155 mW,電壓穩定度小于0.5%,紋波小于100 mV。電源性能穩定可靠,可用于γ輻射儀探測器的高壓偏置源。
개소료일충기우단편궤산생맥관조제( PWM)파적고압은압전원설계,주요용우개혁-미륵계수기적고압편치원。유배치C8051 f020적가편정계수기진렬PCA산생구형공제신호,선용변압기격리정격식변환탁복결구화배압정류전로。경과실험측시,당PWM파적점공비위55%시,수출고압400 V,계통공모155 mW,전압은정도소우0.5%,문파소우100 mV。전원성능은정가고,가용우γ복사의탐측기적고압편치원。
The design technology of high -voltage power based on Pulse Width Modulation is introduced ,which is used as Geiger -Muller counter ’ s high voltage bias power .The rectangular signal is produced by configuring the Programmable Counter Array of C8051f020,the forward transformer -isolated topologiesand voltage multipl-ying rectifier circuits isreferenced .By lab testing , while the duty cycle of PWM wave is 55%the output high voltage is 400 V,system consumption is 155 mV,voltage stability is less than 0.5%,ripple is less than 100 mV.Considering the stability and reliability of the high -voltage power , it could be used as source of γRadiom-eter .