experiment no9
DESCRIPTION
fnhmjh,jhmTRANSCRIPT
EXPERIMENT NO - 9
Object: To study of clipping and clamping circuits.
APPARATUS REQUIRED:-1. Experimental Kit2. Signal Generator 3. CRO4. Connecting leads
Theory:Clipper The electronic device that is used to limit an Voltage to certain levels is called
a limiter or clipper. It can clip in negative , positive or both alternation of an A.C Voltage. Clipping circuit are of various types.
1. Series Clipper 2. Parallel Clipper 3. Series bias clipper 4. Parallel bias clipper
Series Clipper Circuits
5 V o lt
Out Put
A S e rie s N e g a tiv e C lippe r C irc uit
L o a d R e s is t a n c e
1 0 k
D 1
D I O D E
F R E Q = 1 K H z
S ig na l G e ne ra to r
O utputF R E Q = 1 K H z
S ig na l G e ne ra to r
D 1
D I O D E
5 V o lt
L o a d R e s is t a n c e
1 0 k
A S e rie s P o s itiv e C lippe r C irc uit
Series Clipper Circuits with DC Bias
S ig na l G e ne ra to r
D 1
D I O D E
5 V o ltO utputL o a d R e s is t a n c e
1 0 k
F R E Q = 1 K H z
V re f .
A Series Clipper Circuit With DC Bias
If Vin ≤ Vref. Vo = oIf Vin > Vref.Vo = Vin – Vref.
5 V o lt
V re f . D 1
D I O D E
L o a d R e s is t a n c e
1 0 k
S ig na l G e ne ra to r
F R E Q = 1 K H z O utput
A Series Clipper Circuit With DC Bias
If Vin ≥ 0 Vo = Vin
For negative value of Vin Vo = 0
Parallel Clipper Circuits
D 1
D I O D E
R e s is t a n c e
1 0 k
F R E Q = 1 K H z O utput
S ig na l G e ne ra to r
5 V o lt
A Parallel Clipper Circuit
D 1
D I O D E
R e s is t a n c e
1 0 k
F R E Q = 1 K H z O utput
S ig na l G e ne ra to r
5 V o lt
A Parallel Clipper Circuit
Parallel Clipper Circuits with DC Bias
D 1
D I O D E
R e s is t a n c e
1 0 k
F R E Q = 1 K H z O utputV re f .
S ig na l G e ne ra to r
5 V o lt
D 2
D I O D E
V re f .
R e s is t a n c e
1 0 k
F R E Q = 1 K H z
D 1
D I O D E O utputV re f .
S ig na l G e ne ra to r
5 V o lt
Two Way Parallel Clipper Circuit
D1
DIODE
Resistance
10k
FREQ = 1KHz OutputVref.
Signal Generator
5 Volt
Clamper Circuit
D 1
D I O D E
F R E Q = 1 K H z O utput
S ig na l G e ne ra to r
5 V o lt
R e s is t a n c e 1 0 k
C 1
. 0 1 m f d
D 1
D I O D E
F R E Q = 1 K H z O utput
S ig na l G e ne ra to r
5 V o lt
R e s is t a n c e 1 0 k
C 1
. 0 1 m f d
Clamper Circuit with DC Bias
D 1
D I O D E
F R E Q = 1 K H z O utput
S ig na l G e ne ra to r
5 V o lt V re f .
R e s is t a n c e 1 0 k
C 1
. 0 1 m f d
Procedure 1. Connect the circuit using suitable patch cord as shown in circuit diagram.2. Apply a Sinusoidal input of 5 volt and 1 kHz. (Use signal Generator for
Sinusoidal input).3. Observe the input signal on channel 1 on CRO and out put signal from
circuit on channel 2 on CRO.4. Repeat the experiment for different clipping and clamping circuits.
ResultSketch the wave shape and label the Amplitudes.Indicate the type of clipping in each case.Draw transfer characteristics for different clipping and clamping circuits.
