【show】12V5A输出的三种拓扑，反激，正激，推挽！

由于买的mosfet和diode没有邮寄到，所以焊接过程要等两天，这些参数大家可以帮忙参考一下，有什么不足之处，大家一起讨论。谢谢大家

PQ5050：原边10匝4股0.67mm并饶

                副边4匝20股0.67并饶

            原边10匝4股0.67mm并饶

            辅助绕组5匝0.33mm

采用三明治绕法，有效降低漏感。

就是多股线。

恩，是的。我想验证一下是不是变压器体积大点，会不会提升效率，由于不是产品，就做一套而已，所以并没有考虑到体积和成本问题。谢谢你的指导

不是多股并饶，是多股线。

干货更新，由于在黑龙江，大部分电子元器件，比较优质的MOSFET，DIODE没有卖的，所以只能在网上买了MOSFET和DIODE，由于顺丰也不给力了，两天还没到（有可能是商家没发货），所以这两天抽出空来解决一下单片机显示问题，由于普通51单片机内部没有ADC功能，所以本次设计采用了STM8单片机，是STM32的前身，STM8内部自带ADC，不用外接ADC模块，比如ADC0832.Stm8内部有16个转换通道，10位的采样精度，所以基于此优点，本次选择此芯片。把进步向大家发出来：现在完成一路的采样，电压采样：

精度还可以，有1mV的误差，可以允许的。

下面把程序发出来让大家审核，有什么完善的地方我一定做到，希望大家给出宝贵意见。

/**
  ******************************************************************************
  * @file    Project/main.c 
  * @author  MCD Application Team
  * @version V2.0.0
  * @date    25-February-2011
  * @brief   Main program body
  ******************************************************************************
  * @attention
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * 
© COPYRIGHT 2011 STMicroelectronics
  ******************************************************************************
  */ 


/* Includes ------------------------------------------------------------------*/
#include "stm8s.h"

/* Private defines -----------------------------------------------------------*/
unsigned char const shumaguan[] = {0xc0,0xf9,0xa4,0xb0,0x99,
																	0x92,0x82,0xf8,0x80,0x90};
//ADCValue数组存放A/D采样值，voltageADC为数字滤波后的结果
unsigned int ADCValue[20] = {0},voltageADC = 0;
//voltage为电压计算结果，单位mV
unsigned int voltage = 0;
/* Private function prototypes -----------------------------------------------*/
void ADConvert(void);
void DigitalFiltering(void);
void Display(void);
void Delay(unsigned int t);
/* Private functions ---------------------------------------------------------*/

void main(void)
{
	unsigned char i;
	//PG口数码管段选，PE口数码管位选
	GPIO_Init(GPIOG,GPIO_PIN_ALL,GPIO_MODE_OUT_PP_HIGH_FAST);
	GPIO_Init(GPIOE,GPIO_PIN_ALL,GPIO_MODE_OUT_PP_HIGH_FAST);
	/*ADC2配置为：
								-连续转换模式
								-通道0（PB0）
								-fADC = fmaster/2
								-触发模式为定时器
								-触发关
								-数据右对齐
								-选择通道0上的施密特触发器
								-施密特触发器关*/
	ADC2_Init(ADC2_CONVERSIONMODE_CONTINUOUS,
						ADC2_CHANNEL_0,
						ADC2_PRESSEL_FCPU_D2,
						ADC2_EXTTRIG_TIM,
						DISABLE,
						ADC2_ALIGN_RIGHT,
						ADC2_SCHMITTTRIG_CHANNEL0,
						DISABLE);
  /* Infinite loop */
  while (1)
  {
		//连续转换20次
		ADConvert();
		//数字滤波
		DigitalFiltering();
		i = 200;
		while(i --)
		Display();
  }  
}
void ADConvert(void)
{
	unsigned char count = 0;
	//连续转换
	ADC2->CR1 |= 0x02;
	ADC2_StartConversion();
	while(count < 20)
	{
		//等待转换结束
		while(ADC2_GetFlagStatus() == RESET);
		//清除转换结束标志位
		ADC2_ClearFlag();
		ADCValue[count] = ADC2_GetConversionValue();
		count++;
	}
	//关闭连续转换
	ADC2->CR1 &= ~0X02;
}
void DigitalFiltering(void)
{
	unsigned char i,j;
	unsigned int temp;
	//对数组排序
	for(i = 20;i >= 1;i--)
	{
		for(j = 0;j<(i-1);j++)
		{
			if(ADCValue[j] > ADCValue[j+1])
			{
				temp = ADCValue[j];
				ADCValue[j] = ADCValue[j+1];
				ADCValue[j+1] = temp;
			}
		}
	}
	//舍弃最大和最小的两个数，然后求平均值
	voltageADC = 0;
	for(i = 2;i<=17;i++)
	voltageADC += ADCValue[i];
	voltageADC /= 16;
}
void Display(void)
{
	unsigned char displayArray[4],i;
	voltage = (unsigned int)((unsigned long)voltageADC * 3161UL / 1023UL);
	//拆分数据，使用数码管显示
	displayArray[3] = voltage / 1000;
	displayArray[2] = (voltage % 1000) / 100;
	displayArray[1] = (voltage % 100) / 10;
	displayArray[0] = voltage % 10;
	//使用数码管显示电压值，单位mV
	for(i = 0;i < 4;i++)
	{
		GPIOG->ODR = shumaguan[displayArray[i]];
		GPIOE->ODR = ~(0X01 << i);
		Delay(100);
		GPIOE->ODR = 0XFF;
	}
}
void Delay(unsigned int t)
{
	while(t--);
}


#ifdef USE_FULL_ASSERT

/**
  * @brief  Reports the name of the source file and the source line number
  *   where the assert_param error has occurred.
  * @param file: pointer to the source file name
  * @param line: assert_param error line source number
  * @retval : None
  */
void assert_failed(u8* file, u32 line)
{ 
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

  /* Infinite loop */
  while (1)
  {
  }
}
#endif

/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/