用运算放大器设计一个方波、正弦波、三角波的信号发生器 用集成运算放大器设计一个正弦波、方波、三角波信号发生器
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include
#define uchar unsigned char
#define uint unsigned int
sbit LCP=P2^2;
sbit SCP=P2^1;
sbit SI=P2^0;
sbit S1=P2^3;
sbit S2=P2^4;
sbit S3=P2^5;
sbit S4=P2^6;
sbit S5=P2^7;
sbit DA0832=P3^3;
sbit DA0832_ON=P3^2;
uchar fun=0,b=0,c=0,d=0,tl,th;
uchar code tab[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
uchar code tosin[256]={0x80,0x83,0x86,0x89,0x8d,0x90,0x93,0x96,0x99,0x9c,0x9f,0xa2,0xa5,0xa8,0xab,0xae,0xb1,0xb4,0xb7,0xba,0xbc,0xbf,0xc2,0xc5
,0xc7,0xca,0xcc,0xcf,0xd1,0xd4,0xd6,0xd8,0xda,0xdd,0xdf,0xe1,0xe3,0xe5,0xe7,0xe9,0xea,0xec,0xee,0xef,0xf1,0xf2,0xf4,0xf5
,0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfd,0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfd
,0xfd,0xfc,0xfb,0xfa,0xf9,0xf8,0xf7,0xf6,0xf5,0xf4,0xf2,0xf1,0xef,0xee,0xec,0xea,0xe9,0xe7,0xe5,0xe3,0xe1,0xde,0xdd,0xda
,0xd8,0xd6,0xd4,0xd1,0xcf,0xcc,0xca,0xc7,0xc5,0xc2,0xbf,0xbc,0xba,0xb7,0xb4,0xb1,0xae,0xab,0xa8,0xa5,0xa2,0x9f,0x9c,0x99
,0x96,0x93,0x90,0x8d,0x89,0x86,0x83,0x80,0x80,0x7c,0x79,0x76,0x72,0x6f,0x6c,0x69,0x66,0x63,0x60,0x5d,0x5a,0x57,0x55,0x51
,0x4e,0x4c,0x48,0x45,0x43,0x40,0x3d,0x3a,0x38,0x35,0x33,0x30,0x2e,0x2b,0x29,0x27,0x25,0x22,0x20,0x1e,0x1c,0x1a,0x18,0x16
,0x15,0x13,0x11,0x10,0x0e,0x0d,0x0b,0x0a,0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x02,0x02,0x01,0x00,0x00,0x00,0x00,0x00,0x00
,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02 ,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0d,0x0e,0x10,0x11,0x13,0x15
,0x16,0x18,0x1a,0x1c,0x1e,0x20,0x22,0x25,0x27,0x29,0x2b,0x2e,0x30,0x33,0x35,0x38,0x3a,0x3d,0x40,0x43,0x45,0x48,0x4c,0x4e
,0x51,0x55,0x57,0x5a,0x5d,0x60,0x63,0x66 ,0x69,0x6c,0x6f,0x72,0x76,0x79,0x7c,0x80 };
void display(unsigned char command)
{
unsigned char i;
LCP=0;
for(i=8;i>0;i--)
{
SCP=0;
if((command & 0x80)==0)
{
SI=0;
}
else
{
SI=1;
}
command<<=1;
SCP=1;
}
LCP=1;
}
void key1(void)
{
fun++;
if(fun==4)
fun=0x00;
}
void key2(void)
{
tl++;
if(tl==0x1f)
th++;
}
void key3(void)
{
tl--;
if(tl==0x00)
th--;
}
void key4(void)
{
double t;
int f;
TR0=0;
t=(65535-th*256-tl)*0.4;
f=(int)(1000/t);
S3=tab[f%10];
f=f/10;
S2=tab[f%10];
f=f/10;
if(f==0)
S1=0;
else
S1=tab[f];
TR0=1;
}
void key5(void)
{
tl--;
if(tl==0x00)
th++;
}
void judge(void)
{
uchar line,row,de1,de2,keym;
P1=0x0f;
keym=P1;
if(keym==0x0f)return;
for(de1=0;de1<200;de1++)
for(de2=0;de2<125;de2++){;}
P1=0x0f;
keym=P1;
if(keym==0x0f)return;
P1=0x0f;
line=P1;
P1=0xf0;
row=P1;
line=line+row; /*\u5b58\u653e\u7279\u5f81\u952e\u503c*/
if(line==0xde)key1();
if(line==0x7e)key2();
if(line==0xbd)key3();
if(line==0x7d)key4();
}
void time0_int(void) interrupt 1 //\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f
{
TR0=0;
if(fun==1)
{
DA0832=tosin[b]; //\u6b63\u5f26\u6ce2
b++;
}
else if(fun==2) //\u952f\u9f7f\u6ce2
{
if(c<128)
DA0832=c;
else
DA0832=255-c;
c++;
}
else if(fun==3) // \u65b9\u6ce2
{
d++;
if(d<=128)
DA0832=0x00;
else
DA0832=0xff;
}
TH0=th;
TL0=tl;
TR0=1;
}
void main(void)
{
TMOD=0X01;
TR0=1;
th=0xff;
tl=0xd0;
TH0=th;
TL0=tl;
ET0=1;
EA=1;
while(1)
{
display();
judge();
}
}
\u4e94\u3001\u5fc3\u5f97\u4f53\u4f1a
\u5f00\u59cb\u7684\u65f6\u5019\u7531\u4e8e\u6ca1\u6709\u7ecf\u9a8c\uff0c\u4e0d\u77e5\u5982\u4f55\u4e0b\u624b\uff0c\u6240\u4ee5\u5c31\u53bb\u56fe\u4e66\u7ba1\u627e\u4e86\u4e00\u4e9b\u4e66\u770b\uff0c\u5c3d\u7ba1\u6709\u8bb8\u591a\u7684\u8bbe\u8ba1\u65b9\u6848\uff0c\u53ef\u662f\u603b\u611f\u89c9\u81ea\u5df1\u8fd8\u662f\u6709\u8bb8\u591a\u7684\u4e1c\u897f\u5f04\u4e0d\u592a\u6e05\u695a\uff0c\u4e8e\u662f\u5c31\u8bf7\u6559\u540c\u5b66\u3002\u4ed6\u5e38\u505a\u4e00\u4e9b\u8bbe\u8ba1\uff0c\u6709\u4e00\u4e9b\u7ecf\u9a8c\u3002\u7ecf\u8fc7\u4ed6\u7684\u89e3\u91ca\u5206\u6790\u5404\u65b9\u6848\u4e4b\u540e\uff0c\u51b3\u5b9a\u7528\u67e5\u8868\u7684\u65b9\u6cd5\u6765\u505a\u3002\u8fd9\u6837\u53ef\u4ee5\u964d\u4f4e\u4e00\u4e9b\u786c\u4ef6\u8bbe\u8ba1\u7684\u96be\u5ea6\uff0c\u521d\u6b21\u8bbe\u8ba1\u5e94\u5207\u5408\u81ea\u5df1\u7684\u6c34\u5e73\u3002\u75288031\u9700\u8981\u6269\u5c55ROM\uff0c\u8fd9\u6837\u8fd8\u8981\u8fdb\u884c\u5b58\u50a8\u5668\u6269\u5c55\u3002\u800c\u4e14\u73b0\u57288031\u5b9e\u9645\u4e2d\u5df2\u7ecf\u57fa\u672c\u4e0a\u4e0d\u518d\u4f7f\u7528\uff0c\u5b9e\u9645\u7528\u7684AT89S51\u82af\u7247\u6709ROM\uff0c\u8fd9\u6837\u628a\u7ecf\u8fc7\u91c7\u6837\u5f97\u5230\u7684\u6570\u503c\u5236\u6210\u8868\uff0c\u5229\u7528\u67e5\u8868\u6765\u505a\u5c31\u7b80\u5355\u4e86\u3002\u6211\u8ba4\u4e3a\u7a0b\u5e8f\u5e94\u8be5\u4e0d\u5927\uff0c\u7247\u5185ROM\u5e94\u8be5\u591f\u7528\u7684\u3002\u7528LED\u663e\u793a\u9891\u7387\u548c\u5e45\u503c\uff0c\u73b0\u6709\u96c6\u6210\u7684\u63a5\u53e3\u9a71\u52a8\u82af\u7247\uff0c\u6ce2\u5f62\u53ef\u901a\u8fc7\u793a\u6ce2\u5668\u8fdb\u884c\u663e\u793a\uff0c\u5355\u7247\u673a\u63a5\u4e0aD/A\u8f6c\u6362\u82af\u7247\u5373\u53ef\uff0c\u8fd9\u6837\u786c\u4ef6\u5f88\u5feb\u5c31\u642d\u597d\u4e86\u3002
\u6211\u4ee5\u4e3a\u8fd9\u4e9b\u505a\u597d\u4e86\uff0c\u6784\u601d\u4e5f\u6709\u4e86\uff0c\u5199\u7a0b\u5e8f\u5e94\u8be5\u662f\u76f8\u5bf9\u5bb9\u6613\u7684\u3002\u8c01\u77e5\u9053\uff0c\u5199\u8d77\u7a0b\u5e8f\u6765\uff0c\u624d\u60f3\u5230\u529f\u80fd\u952e\u8981\u6709\u626b\u63cf\u7a0b\u5e8f\u624d\u884c\u5440\uff0c\u6211\u771f\u7684\u611f\u5230\u5f88\u96be\u3002\u90a3\u65f6\u771f\u7684\u6709\u70b9\u60f3\u653e\u5f03\uff1f\u4e8e\u662f\u5c31\u53bb\u8bf7\u6559\u4e86\u8001\u5e08\uff0c\u8001\u5e08\u5e2e\u5fd9\u5206\u6790\u4e86\u4e00\u4e0b\uff0c\u81ea\u5df1\u53c8\u67e5\u9605\u4e86\u4e00\u4e9b\u8d44\u6599\uff0c\u7ec8\u4e8e\u660e\u767d\u4e86\u626b\u63cf\u7a0b\u5e8f\u600e\u4e48\u5199\u3002
\u4e8e\u662f\u5728\u81ea\u5df1\u7684\u52aa\u529b\u4e0b\uff0c\u7a0b\u5e8f\u5f88\u5feb\u5c31\u5199\u597d\u4e86\u3002\u8fd9\u6b21\u662f\u6211\u7684\u7b2c\u4e00\u4e2a\u8bbe\u8ba1\u5668\u4ef6\uff0c\u5c3d\u7ba1\u7ecf\u5386\u4e86\u4e0d\u5c11\u7684\u8270\u8f9b\uff0c\u4f46\u7ed9\u6211\u79ef\u7d2f\u4e86\u4e00\u70b9\u8bbe\u8ba1\u7684\u7ecf\u9a8c\uff0c\u6700\u540e\u4e5f\u6709\u70b9\u5c0f\u5c0f\u7684\u6210\u5c31\u611f\u3002\u540e\u9762\u7684\u8def\u8fd8\u5f88\u957f\uff0c\u6211\u8fd8\u7684\u52aa\u529b\uff01
\u53c2\u8003\u6587\u732e
[1] \u7ae5\u8bd7\u767d\uff0c\u534e\u6210\u82f1.\u6a21\u62df\u7535\u5b50\u6280\u672f\u57fa\u7840\u3014M\u3015.\u5317\u4eac:\u9ad8\u7b49\u6559\u80b2\u51fa\u7248\u793e\uff0c2003.345-362
[2] \u6f58\u6c38\u96c4\uff0c\u6c99\u6cb3\uff0c\u5218\u5411\u9633.\u7535\u5b50\u7ebf\u8defCAD\u5b9e\u7528\u6559\u7a0b\u3014M\u3015.\u897f\u5b89\uff1a\u897f\u5b89\u7535\u5b50\u79d1\u6280\u5927\u5b66\u51fa\u7248\u793e\uff0c2001.13-118.
[3] \u5f20\u6bc5\u521a\uff0c\u5f6d\u559c\u6e90\uff0c\u8c2d\u6653\u6600\uff0c\u66f2\u6625\u6ce2.MCS-51\u5355\u7247\u673a\u5e94\u7528\u8bbe\u8ba1[M].\u54c8\u5c14\u6ee8\uff1a\u54c8
\u4f60\u8981\u6c42\u7684\u8fd9\u4e2a\u8fd0\u653e\u6050\u6015\u65e0\u6cd5\u5b9e\u73b0\uff0c\u7528\u5355\u7247\u673a\u6bd4\u8f83\u5bb9\u6613\u5236\u4f5c\u3002
\u4f60\u8981\u6c42\u8fd9\u4e48\u591a\uff0c\u514d\u8d39\u5f97\u5230\u65b9\u6848\u5f88\u96be\u3002\u4e3b\u8981\u662f\u5546\u4e1a\u8fd0\u4f5c\u7684\u4eba\u592a\u591a\u4e86\u3002
运放选型上要注意运放带宽问题，需要考虑信号发生器所需要发生的频率
这简单，就不给你电路图了，自己拼凑吧！用运放可以搞一个震荡器出来，能够震荡出方波，其后接一个积分电路（也是用运放做），能积出三角波，然后再接一个低通滤波器（还是运放做），正弦波也出来了。如不知道这些电路怎么搭建，到书上去查查，很好找的，很基本的几个电路模块。几年前我用OP07（或OP37）自己做过，成功了的。
采用8088或8086系统，6264和2764存储器扩展，8255并行接口，DAC0832数模转换器加运算放大器连接在一起就可以了
绛旓細4.璁捐浠诲姟锛氳璁¤兘浜х敓鏂规尝銆佷笁瑙掓尝鍙婃鏍告尝绛夊绉嶆尝褰俊鍙疯緭鍑虹殑娉㈠舰鍙戠敓鍣ㄣ1锛庤緭鍑虹殑鍚勭娉㈠舰宸ヤ綔棰戠巼鑼冨洿0.02Hz锝20k Hz杩炵画鍙皟锛2锛姝ｅ鸡娉㈠箙鍊煎湡10V锛屽け鐪熷害灏忎簬1.5锛咃紱3锛庢柟娉㈠箙鍊10V锛4锛庝笁瑙掓尝宄-宄板20V锛涘悇绉嶈緭鍑烘尝褰㈠箙鍊煎潎杩炵画鍙皟锛5锛庤璁＄數璺墍闇鐨勭洿娴佺數婧愩傗槄娉:涓嶄娇鐢ㄥ崟鐗囨満鈽 ...
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绛旓細姝ｅ鸡娉--鏂规尝鍙戠敓鐢佃矾寰堢畝鍗曪紝鍙鐢ㄤ竴涓鏅氱殑闆嗘垚姣旇緝鍣ㄦ垨鏅闆嗘垚杩愭斁锛鍙岀數婧愶紝姝ｈ緭鍏ョ鎺ラ浂璐熺杈撳叆姝ｅ鸡娉俊鍙凤紝鎴栫浉鍙嶏紝杈撳嚭灏辨槸浜ゆ祦鏂规尝浜嗐
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