Overview: 2 Intelligent power amplifier switching power supply design Figure 1 is the overall principle block diagram of the intelligent audio power amplifier switching power supply, the main circuit uses the structure that has been handed over. After inputting the power frequency 220 V AC circuit through the filter circuit, the DC voltage is output through the single-phase bridge rectifier circuit; the conversion circuit uses a full-bridge phase-shifting inverter circuit to convert the front-end DC power into a high-frequency AC power. Then, through the secondary rectification and filtering, a stable DC voltage is output; the detection circuit samples the output voltage signal and sends it to the control circuit to adjust the output voltage by changing the output pulse width duty cycle of the control circuit; the protection circuit realizes overvoltage and overcurrent protection The power detection circuit samples the current of the conversion circuit. When the output power exceeds 500 W, an over-power detection signal is generated, and the control circuit is driven to reduce the output voltage: the auxiliary power supply circuit supplies power to the control circuit and various operational amplifiers. Intelligent power amplifier switching power supply schematic: More about DSP device TMS320F2812 data: integrated circuit query network http:// (Please read the PDF for details)
There are many different versions of DIN Connectors. The name of each type comes from the number of pins the connector has (3-pin DIN, 4-pin DIN, etc.) Some of these pin numbers come in different configurations, with the pins arranged differently from one configuration to the next.
DIN cable connector 3-pin, 4-pin, 5-pin, 6-pin, 7-pin, 8-pin degree 180, 216, 240, 262, 270
DIN cables, DIN connector, telephone cable, computer cable, audio cable ETOP WIREHARNESS LIMITED , https://www.wireharness-assembling.com
1 Introduction Switching power supply is widely used in various electronic equipments due to its small size, light weight, low power consumption, high efficiency, low ripple, low noise, high intelligence and easy expansion. High reliability, intelligence and digitization are the development direction of switching power supplies. The audio power amplifier requires the power supply to automatically adjust the output voltage according to the load change, and then adjust the power to improve the dynamic performance of the power supply and reduce the internal loss of the audio power amplifier, but the current switching power supply cannot be realized. The TMS320F2812 DSP is selected as the main controller of the power amplifier switching power supply, and a low power consumption is designed. A new intelligent power amplifier switching power supply for large power amplifier systems. 