Direct PWM Variable Speed Fan Motor Driver

General Description The APX9270 is a single phase, DC brushless motor driver with PWM variable speed control and current limit features suitable for the fan of personal computer’s power supply and CPU cooler. The PWM control system includes thermistor input signal and direct PWM input signal, e

文件：352.94 Kbytes 页数：17 Pages

ANPEC

茂达电子

Direct PWM Variable Speed Fan Motor Driver

General Description\nThe APX9270 is a single phase, DC brushless motor driver with PWM variable speed control and current limit features suitable for the fan of personal computer’s power supply and CPU cooler. The PWM control system includes thermistor input signal and direct PWM input signal, enabl · Single Phase Full Wave Fan Driver\n· Low Quiescent Current (6mA Typical)\n· Built-in Variable Speed Function\n· Current Limit Circuit (includes both internal and external Current Limit)\n· Built-in Lock Protection and Auto Restart Function\n· FG (rotation speed detection) Output\n· Soft Switching ;

Anpec

茂达电子

DTMF RECEIVER

General Description The HM 9270C/D is a complete DTMF receiver integrating both the bandsplit filter and digital decoder functions. The filter section uses switched capacitor techniques for high- and low-group filters and dial-tone rejection. Digital counting techniques are employed in the deco

文件：66 Kbytes 页数：10 Pages

EMC

义隆电子

DTMF RECEIVER

General Description The HM 9270C/D is a complete DTMF receiver integrating both the bandsplit filter and digital decoder functions. The filter section uses switched capacitor techniques for high- and low-group filters and dial-tone rejection. Digital counting techniques are employed in the deco

文件：66 Kbytes 页数：10 Pages

EMC

义隆电子

AUDIO FILTER INTRODUCTION

INTRODUCTION The KA9270 is a monolithic integrated circuit designed for audio filter. It is used in compact disc player, digital audio tape recorder, etc. FEATURES • Functions: * Buffer for impedence matching * Low pass filter * De - emphasis contro

文件：274.3 Kbytes 页数：7 Pages

SAMSUNG

三星