Email Template - Michigan State University
Constructing Circuit Schematics Using MS Word
Prepared by: P. David Fisher and John A. Kelley
Department of Electrical Engineering
Michigan State University
File: circut_symbols_3.doc
Revised: 8/30/99
Overview
Students and faculty often need to document electric, electronic, and digital-logic circuits by incorporating schematics into documents. To assist individuals in constructing circuits, we have consulted the appropriate IEEE standards for graphic symbols and then generated symbol sets that can be rapidly assembled to construct both simple and complex circuits.
To construct circuit schematics using these symbols, one needs to know a little about how to copy, move, group, and rotate objects using MS Word. A good exercise for a beginner would be to copy the sample circuit given on page 7 of this report and paste this copy on the workspace provided on page 8. Select the object, ungroup it and then take apart the circuit. Once it has been taken apart, then re-assemble it in the workspace. Finally, group the individual elements (icons) to form a single object—i.e., the original circuit schematic. Finally, copy this object and paste it into a frame in a sample document.
Once these skills have been acquired, the quality of the document will be enhanced significantly. It is recommended that circuit schematics drawn for one document be saved in a “circuit-template file.” By following this practice, one leverages writing projects off one another, and this saves time. This is so because future reports are much easier to generate since existing circuits can be reused. For example, search the template file for similar circuit architectures and components, and then cut and paste to obtain the new circuit.
Please send comments and suggestions to P. David Fisher at fisher@egr.msu.edu.
Table of Contents
Circuit symbols and useful schematic icons Page 1
Discrete semiconductor devices Page 2
Integrated semiconductor devices Page 3
Logic gates Page 4
Flip flops Page 5
Miscellaneous icons Page 6
Sample circuit Page 7
Workspace to practice and create circuit schematics Page 8
-----------------------
S
Flip Flops
Note: Set your snap to 0.05” for these icons
PNP BJT
Voltage and Current Sources
Special Symbols
R, L, C & Switches
Circuit Symbols
Miscellaneous
Logic Gates
Discrete Semiconductor Devices
NPN BJT
N-channel JFET
P-channel JFET
N-channel insulated-gate, depletion-type, internally- terminated MOSFET
N-channel insulated-gate, enhancement-type, four terminal MOSFET
P-channel insulated-gate, depletion-type, four-terminal MOSFET
P-channel insulated-gate, enhancement-type, four- terminal MOSFET
R
T
Clk
R
S
T
R
S
Clk
D
Clk
3
Photo-detector Diode
R
S
T
Light-emitting
Diode
Zaner Diode
D
Clk
R
S
Clk
Clk
D
R1 = 1.2 k(
Unclocked
SR Flip Flop
Clk
S
D
C1 = 4.8 (F
R2 = 2.2 k(
Clk
R
D
Note: Set your snap to 0.05” for these icons
PN Junction Diode
Clk
Clk
D
P-channel insulated-gate, depletion-type, four-terminal MOSFET
P-channel insulated-gate, enhancement-type, four- MOSFET
K
J
Clk
Integrated Semiconductor Devices
8
R
S
K
J
Clk
NPN BJT
PNP BJT
R
S
Clk
K
J
P-channel JFET
N-channel JFET
Clk
K
J
N-channel insulated-gate, enhancement-type, four- terminal MOSFET
N-channel insulated-gate, depletion-type, internally terminated MOSFET
Clk
K
J
Photo-detector Diode
Clk
Note: Set your snap to 0.05” for these icons
R
2
1
SSSS
Note: Set your snap to 0.05” for these icons
Clk
For practice, you might want to try replacing circuit components with other components, or adding on to this circuit.
Note: the individual icons have been grouped to form a simple “object”. The object has been grouped with an invisible “framing” rectangle that then allows you to move the object and wrap text with increased ease. The figure caption has been constructed using a “text frame”.
Example Circuit
R
S
Clk
K
J
Clk
T
Clk
T
Clk
6
7
T
Light-emitting
Diode
S
4
5
R
Zaner Diode
Clk
R
(
Coil unit
S
1R
1S
Clk
Load
load
R
S
1R
1S
Units
Note: Set your snap to 0.05” for these icons
Clk
R
V kV mV (V
A kA mA (A
( k( m( ((
H mH (H nH
F mF (F nF
v11 V11 i11 I11
Example: V11 = 2.23 mV Example: V11 = 2.23 mV
PN Junction Diode
S
SR
JK
D
T
1-LEVEL
0-LEVEL
RISING
FALLING
RISING/ ASYNCH
FALLING/ ASYNCH
t = 0
VS = 4 V
L1 = 3.8 mH
Figure 1. A simple RLC circuit schematic demonstrating the application of the circuit symbols to construct a circuit. This figure caption also serves as a model.
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