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Description: 中频感应加热以其加热效率高、速度快，可控性好及易于实现机械化、自动化等优点，已在熔炼、铸造、弯管、热锻、焊接和表面热处理等行业得到广泛的应用。
本设计根据设计任务进行了方案设计，设计了相应的硬件电路，研制了20KW中频感应加热电源。
本设计中感应加热电源采用IGBT作为开关器件，可工作在10 Hz～10 kHz频段。它由整流器、滤波器、和逆变器组成。整流器采用不可控三相全桥式整流电路。滤波器采用两个电解电容和一个电感组成Ⅱ型滤波器滤波和无源功率因数校正。逆变器主要由PWM控制器SG3525A控制四个IGBT的开通和关断，实现DC-AC的转换。
设计中采用的芯片主要是PWM控制器SG3525A和光耦合驱动电路HCPL-316J。设计过程中程充分利用了SG3525A的控制性能，具有宽的可调工作频率，死区时间可调，具有输入欠电压锁定功能和双路输出电流。由于HCPL-316J具有快的开关速度（500ns），光隔离，故障状态反馈，可配置自动复位、自动关闭等功能，所以选择其作为IGBT的驱动。
对原理样机的调试结果表明，所完成的设计实现了设计任务规定的基本功能。此外，为了满足不同器件对功率需要的要求，设计了功率可调。这部分超出了设计任务书规定的任务。-induction heating with high heating efficiency, speed and good controllability and easy to mechanization. the advantages of automation, in melting, casting, bending, forging, welding and surface heat treatment and other industries have been widely employed. According to the design tasks for the design of the program design, design corresponding to the hardware circuit, Development of 20 KW induction heating power. The design of induction heating power IGBT used as a switching device, which can work in 10 Hz - 10 kHz frequency band. It consists of rectifier, filter, and the inverter components. Controlled Rectifier not use the entire three-phase bridge rectifier circuit. 2 filter used an electrolytic capacitor and inductor components II-type filter and passive PFC. Inverter mainly by the PW
Platform: |
Size: 5144 |
Author: wq57 |
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Description: 中频感应加热以其加热效率高、速度快，可控性好及易于实现机械化、自动化等优点，已在熔炼、铸造、弯管、热锻、焊接和表面热处理等行业得到广泛的应用。
本设计根据设计任务进行了方案设计，设计了相应的硬件电路，研制了20KW中频感应加热电源。
本设计中感应加热电源采用IGBT作为开关器件，可工作在10 Hz～10 kHz频段。它由整流器、滤波器、和逆变器组成。整流器采用不可控三相全桥式整流电路。滤波器采用两个电解电容和一个电感组成Ⅱ型滤波器滤波和无源功率因数校正。逆变器主要由PWM控制器SG3525A控制四个IGBT的开通和关断，实现DC-AC的转换。
设计中采用的芯片主要是PWM控制器SG3525A和光耦合驱动电路HCPL-316J。设计过程中程充分利用了SG3525A的控制性能，具有宽的可调工作频率，死区时间可调，具有输入欠电压锁定功能和双路输出电流。由于HCPL-316J具有快的开关速度（500ns），光隔离，故障状态反馈，可配置自动复位、自动关闭等功能，所以选择其作为IGBT的驱动。
对原理样机的调试结果表明，所完成的设计实现了设计任务规定的基本功能。此外，为了满足不同器件对功率需要的要求，设计了功率可调。这部分超出了设计任务书规定的任务。-induction heating with high heating efficiency, speed and good controllability and easy to mechanization. the advantages of automation, in melting, casting, bending, forging, welding and surface heat treatment and other industries have been widely employed. According to the design tasks for the design of the program design, design corresponding to the hardware circuit, Development of 20 KW induction heating power. The design of induction heating power IGBT used as a switching device, which can work in 10 Hz- 10 kHz frequency band. It consists of rectifier, filter, and the inverter components. Controlled Rectifier not use the entire three-phase bridge rectifier circuit. 2 filter used an electrolytic capacitor and inductor components II-type filter and passive PFC. Inverter mainly by the PW
Platform: |
Size: 5120 |
Author: wq57 |
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Description: 使用PWM方式来产生一个1KHz左右的正弦波，幅度为0-Vcc/2-The use of PWM mode to generate a 1KHz sine wave around, ranging from 0-Vcc/2
Platform: |
Size: 2048 |
Author: 张林 |
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Description: 用T0定时器控制输出PWM，占空比10 到80 可按键调节，输出频率可用按键调节，1KHZ,5KHZ,7KHZ，三个之间变化-T0 timer control output using PWM, duty cycle 10 to 80 of buttons adjust the output frequency can be adjusted keys, 1KHZ, 5KHZ, 7KHZ, varied between three
Platform: |
Size: 4096 |
Author: 于哥 |
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Description:
Platform: |
Size: 1024 |
Author: Andy Wei |
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Description: // This program provides simple DC motor control using the PCA 8-bit PWM Mode.
// The ADC is used to read the potentiometer voltage on P0.6. The ADC uses
// polled mode and 64 sample averaging. The 8-bit PWM is configured to operate
// at 24 kHz. The PWM high-time varies from a minimum of 160 ns to a maximum of
// 100 .
Platform: |
Size: 2048 |
Author: denny |
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Description: 用avr16单片机，编译环境在ICC实现对pwm波的控制，为9位快速pwm波模式。通过两个独立按键能实现对占空比的调节。频率在20khz以上。-With avr16 microcontroller, compile environment in the ICC to realize the control of PWM waves, a fast PWM waves for 9 mode. Through the two independent buttons can realize to the adjustment of the duly ratio. In more than 20 KHZ frequency.
Platform: |
Size: 1024 |
Author: 雅莉山大伯爵 |
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Description: The 33886 is a monolithic H-Bridge ideal for fractional horsepower
DC-motor and bi-directional thrust solenoid control. The IC incorporates
internal control logic, charge pump, gate drive, and low RDS(ON) MOSFET
output circuitry. The 33886 is able to control continuous inductive DC load
currents up to 5.0 A. Output loads can be pulse width modulated (PWM-ed)
at frequencies up to 10 kHz.
Platform: |
Size: 600064 |
Author: 纪赵华 |
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Description: The 33886 is a monolithic H-Bridge ideal for fractional horsepower
DC-motor and bi-directional thrust solenoid control. The IC incorporates
internal control logic, charge pump, gate drive, and low RDS(ON) MOSFET
output circuitry. The 33886 is able to control continuous inductive DC load
currents up to 5.0 A. Output loads can be pulse width modulated (PWM-ed)
at frequencies up to 10 kHz.
Platform: |
Size: 169984 |
Author: 纪赵华 |
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Description: Pwm using 16f877a ccp1 &ccp2 variable duty cycle 10 khz 10 mhz xtal used
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Size: 13312 |
Author: madgoes |
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Description: This example of AC-DC-AC converter illustrates use of Universal Bridge, Multimeter, and Powergui blocks, as well as discrete control blocks of the Extras library.-A 60 Hz, voltage source feeds a 50 Hz, 50 kW load through an AC-DC-AC converter. The 600V, 60 Hz voltage obtained at secondary of the Wye/Delta transformer is first rectified by a six pulse diode bridge. The filtered DC voltage is applied to an IGBT two-level inverter generating 50 Hz. The IGBT inverter uses Pulse Width Modulation (PWM) at a 2 kHz carrier frequency. The circuit is discretized at a sample time of 2 us
Platform: |
Size: 13312 |
Author: 马洪雨 |
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Description: 产生一个占空比为50 的脉冲PWM波形，要求这个脉冲波形按照以下要求对脉冲频率进行变化：
从500KHz（对应2us周期）到10KHz（对应100us周期)每个脉冲周期时间递增，每次递增1us。当脉冲周期时间递增到100us时，下一个脉冲周期为2us。如此循环-From 500 KHZ (corresponding to 2 us cycle) to 10 KHZ (100 us cycle) corresponding to each pulse cycle time increasing, increasing every time 1 us. When the pulse cycle time increased to 100 us, under a pulse cycle of 2 us. The cycle
Platform: |
Size: 6008832 |
Author: |
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Description: PWM1和PWM2输出频率为1KHz的PWM波形。波形的占空比每隔1s变化5 ,范围在10 到90 之间。
-PWM1 and PWM2 output frequency of 1 KHZ PWM waveform.Waveform of the duty ratio changes every 1 s 5 , in the range between 10 and 90
Platform: |
Size: 283648 |
Author: 小鹏 |
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Description: PWM1和PWM2输出频率为1KHz的PWM波形。波形的占空比每隔1s变化5 ,范围在10 到90 之间。-PWM1 and PWM2 output frequency of 1 KHZ PWM waveform.Waveform of the duty ratio changes every 1 s 5 , in the range between 10 and 90 .
Platform: |
Size: 219136 |
Author: chenzhuo |
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Description: xs128芯片pwm波测试程序,频率为4kHz,占空比50 -Xs128 chip PWM wave test procedure, frequency of 4 KHZ, 50 duty cycle
Platform: |
Size: 338944 |
Author: 居无檐 |
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Description: cc2530的i2c的源码GPIO p1.3和P1.4销I2c的主人。P1.3作为时钟(使用定时器3为400 khz)生成pwm时钟和P1.4 SDA。-The source code of cc2530 of i2c.GPIO p1.3 and P1.4 pin for I2c master. P1.3 use as a clock (use timer 3 to generate pwm clock for 400khz) and P1.4 for SDA.
Platform: |
Size: 6144 |
Author: 王朝 |
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Description: 初始化EVA，使得PWM1和PWM2输出互补的周期为1KHz的PWM波，占空比初始化 10 ，死区时间为4.27us。-Initialize the EVA, makes the PWM1 and PWM2 output complementary PWM wave for a period of 1 KHZ, 10 duty cycle is initialized, dead zone of 4.27 us.
Platform: |
Size: 222208 |
Author: 龙晓磊 |
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Description: Wide-range supply voltage, 4.5 V to 21.5 V
Three power output configurations:
– 2 channels of ternary PWM
(2 x 20 W into 8 at 18 V) + PWM output
– 2 channels of ternary PWM
(2 x 20 W into 8 at 18 V) + ternary stereo
line-out
– 2.1 channels of binary PWM (left, right,
LFE) (2 x 9 W into 4 +1 x 20 W into 8
at 18 V)
FFX with 100-dB SNR and dynamic range
Scalable FFX modulation index (up to 100 )
Selectable 32- to 192-kHz input sample rates
I2C control with selectable device addre- Wide-range supply voltage, 4.5 V to 21.5 V
Three power output configurations:
– 2 channels of ternary PWM
(2 x 20 W into 8 at 18 V)+ PWM output
– 2 channels of ternary PWM
(2 x 20 W into 8 at 18 V)+ ternary stereo
line-out
– 2.1 channels of binary PWM (left, right,
LFE) (2 x 9 W into 4 +1 x 20 W into 8
at 18 V)
FFX with 100-dB SNR and dynamic range
Scalable FFX modulation index (up to 100 )
Selectable 32- to 192-kHz input sample rates
I2C control with selectable device address
Platform: |
Size: 6144 |
Author: kuangjianhong |
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Description: PWM0输出500K方波信号 采集按键数据变化 根据按键数据量变化范围确定是否有按键，PWM输出500KHZ方波信号
对电容进行充放电，当手指触摸到金属件 电容参数发生变化，从而电压发生变化，利用AD功能检测变化量，就知道有按键
触摸按键有电阻和电容之分-PWM0 output 500 k square wave signal acquisition button data changes According to the key data volume range to determine whether there is a button, PWM output 500 KHZ square wave signals
To charging and discharging of capacitance, when a finger touch the metal parts Capacitance parameter changes, thus the voltage changes, using AD function detecting variation, knew with keys
Touch the button has the branch of resistance and capacitance
Platform: |
Size: 28672 |
Author: 黄建怀 |
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