1、 1. 2. 3. 1. , 2. : 1. XD22 XD22 , lHz-1MHz TTL 0 5V( ) 600 LED 2. CA8025 5mV/DIV 20MHz 0.2us/DIV 1M 48400V(DC+AC ) 3.DA-16 ( YB2173B DA-16 100uV 300V 20Hz 1MHz YB2173B , (1) (2) (3) (4) / (5) / (6) (7) 1 0 V 300V 3mV 30mV 300mV 3V 30V 300V 2 l0Hz 2MHz 4. 30 MF 20 333 1 kHz V k / V M / 20 V k / 5. S
2、AC SAC (1) (2) (3) (4) (5) (6) (7) (741) (8)RC (741) (9) (E555) (10) 220V 50Hz (1) 14V 16V 18V(0.3A) (2) +5V 1A (3) +12V (4) +15V (5) -5V +5V 1. / (1) Y ( ), , , 1 CH 2 CH Y X 49(2) 2.1.1 2.1.1 AC AC MODE CH1 CH2 DUAL + 1 11V , 0dB , Y V/DIV , , Y ( ) kHz 20dB 40dB Y V/DIV (3) ( ) , T, f(Hz)=1/T(s)
3、(4) 1 4V( ) , RC kHz 2. DA 16 ( YB2173B 1kHz 5 3. MF-30 4. SAC 50 1. , 2. 1. , , ? 2. , =3V f =1 , 6 cm (t/cm) Y (V/cm) ? IPP U kHz 1. , ( ), 2. , , 3. MF-30 , 4. ,MF-30 5. 51 1. 2. 3. ( ) u A i R o R 4. 1. 2. 3. 2.2.1 , 80 =100k p R 1. 2.2.1 , p RR P R b11 680k (500k) 10k (20k) R b12 20kR e 1k 22 2
4、2 (10 R C 2k (2.4k) 100 (50 ) T R L 5.1k (2.4k) U cc +12V 2. 52 , , , ( ), CQ I CEQ U CQ I E U e E EQ CQ R U I I / = , CQ I Q , , 0.5V, , , CEQ U CC CEQ U U , , , , , , CC U p R c R e R 11 b R 12 b R p R p R p R 3. v A / vo AUU i = , , 2.2.1 v A be r (/ /) CL v be R R A r = ) ( ) ( 26 ) 1 ( 300 mA I
5、 mV r EQ be + + = v A CQ I L R534. i R i R 2.2.2 R , S U i U R U U U R U U I U R i S i i S i i i i = = = / ) U R R i R 5. , 2.2.3 , o R o U oL U o RR s U s R + + S U U iR i OL U R O + - U O R s S U R L 2.2.2 2.2.3 2.2.3 R R R U U L o o OL + = 54 L oL oL o o R U U U R = L R o R 6. , , 0.707 H f L f H
6、 L H f f f BW = 1. 2.2.1, , , +12V 2. kHz f 1 = , =30mV( ) Y , , =0, , 2.2.1 i U p R o U i U 2.1.1 BEQ U /V CEQ U /V BQ I / A CQ I /mA EQ I /mA 3. v A (1) , =30mV kHz f 1 = i U55o U , v A (2) i U o U CH1 CH2 i U o U 4. 2, 2.2.2 p R 2.2.2 CQ I /mA CEQ U /V BEQ U /V *5. (1) kHz f 1 = , =30mV =5.1 i U
7、L R k , ( ) O U (2) ( =30mV ), , 0.707(-3 ) i U dB H f (3) ( =30mV ), , 0.707(-3 ) i U dB L f (4) H L H f f f BW =566. i R 2.2.2 R =1 , , k S U i UR U U U R i S i i = , R , 2 1 S i U U = , “ “ i R 7. o R 2.2.3 =5.1k , = =5.1k , L R L R O U L R OL UL oL oL o o R U U U R = 1. 2. 1. 2.2.4 2. 0.5V, ? ?
8、CEQ U CC CEQ U U ( a) ( b) ( c) 2.2.4 573. 2.2.1 , ? , ? ? 11 b R p R 11 b R 1. , 2. , , 3. , =0 i U 4. , , , 5. , , , , i R i U58 1. 2. 3. 1. 2. 2.3.1 , 3. kHz f 1 = ( u A i R o R 80 p R=100k ) 1. 2.3.1 1 U cc +12V 2. , , , CC U p R B R E R p R p R p R R E 5.1k R B +i v _ 10k R P 680k (500k) 22u (1
9、0u)+ o v - R L 5.1k 3. 2.3.1 591 ) / )( 1 ( ) / )( 1 ( + + + = = L E be L E i o u R R r R R U U A 1 1+ 4. i R 2.3.1 i R = / (1 )( / ) Bb e EL RrR R + + B R 5. o R 2.3.1 + + = 1 / be S E o r R R R B S S R R R / = s R s R be be E o r r R R + = 1 /6. , , , , 0.707 , , H f L f H L H f f f BW = 601. 2.3.1 , , +12V 2. kHz f 1 = , =20mV( ) CH1
