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Electric-Electronic Circuits The next 43 slides cover various electric and electronic circuits which have been employed in devices
throughout the U.S. or abroad. These circuits are not an all-inclusive listing, nor is it intended to be.
Hopefully you will have the time and supplies to build the circuits and experiment with them. If you
have the funds available, Radio Shack has several mini-engineer notebooks which cover different
experiments and circuits which can be adapted to our uses.
If you utilize the small white Radio Shack buzzers, a 100; (Ohm) resistor placed in parallel with the
buzzer may be necessary. Some of these buzzers are equivalent to a 55meg ; resistor and do not
allow enough current through t hold open a transistors Gate. The 100 ; resistor allows a sufficient
amount of current to flow through to keep the Gate open.
If you have any problems or questions, feel free to contact me: Drew A. Prater, W: (256)842-
2324/2325 or [email protected].
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Foil Switch
9v
Tin Foil
I
n
s
u
l
a
t
o
r
Tin Foil
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9V 9V
+- +
Buzzer
-
SCR
Switch
Photocell
-
Sensitive Photo Cell
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Sensitive Photo Cell Circuit
9v
9v
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PHOTO-CELL
TRANSISTOR
Photo-cell Circuit
9V
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Photo Cell Device
Anode
Cathode Gate
9V
SCRPhoto Cell
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SCR
9V
+
Buzzer
-
-
Photocell
Photo Cell
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PIR Device
SCR
9V
+Switch
+ Buzzer
-
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PIR Device
9V
TNT
Transistor Red lead
Switch
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Passive Infrared
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Radio Device
8
Anode
Cathode Gate
9V
SCR
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Pressure Release Circuit
3v
NC NO C
Magnetic Reed
Switch
Microswitch
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9V
+
-
MICRO-SWITCH
NC NO C
Series Circuit - Pressure Release
Microswitch
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Pressure Microswitch
9V
+
-
MICRO-SWITCH
NC NO C
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Collapsing Circuit
9V
9V
B
A
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Collapsing Circuit
9V
9V
C
A
B
3V
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6v
NC NO C
Magnetic Reed Switch
LEDMicroswitch
Pressure Pads
Safe/Arm Switch
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E-Cell Circuit
Toggle
SwitchE-CellResistor
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9v
SC1
Penalty DeviceBP1-1
S1
S2
L1
L2
BP1-2
BP2-1
BP2-2
BZ1
D1
Bombs by DAP.
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Tilt Device
Anode
Cathode Gate
9V
SCR
Mercury Switch
Vapor Switch
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Vibratory Circuit
Anode
Cathode Gate
9V
SCR
Vibratory Switch
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Capacitor Firing System
Capacitor
9V
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Capacitor Firing System
Capacitor
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Resistor/Capacitor Circuit
Toggle
SwitchCapacitorResistor
TRANSISTOR
9V
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SCR
LOAD
Anode
Cathode Gate
9V
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Silicon Controlled Rectifier (SCR)
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LOAD
Transistor
NOTE: Touch base leg to + and - side of battery. If + side makes light glow, transistor is an
NPN type. If - side makes light glow, transistor is a PNP type.
9V
Base
Collector
Emitter
Transistor Check
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Transistor in Package
Metal tab makes
contact to collector of
chip and helpsconduct heat away.
Solid plastic
molded around
silicon chip
BaseCollector
Emitter
Terminals
make contact
to chip
Silicon chip
has three parts
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Fusible Element (GPO)
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FIRING SWITCHES
DETONATOR
ARMING
CONTACTS
FUSIBLE ELEMENT
SWITCH
POWER SOURCE
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Canadian Device
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SHORTED PLUG
COMPLETES CIRCUIT
PLUG & JACK
POWER
SOURCE
NOTE 3
JACK
NOTE 1 POWERSOURCE
CIRCUIT 1
NOTE 2
POWER
SOURCE
LOAD
CIRCUIT 2
CIRCUIT 3
LOAD
COIL
NOTE: 1. Power source A: Decays eliminating power to coil of relay, thereby allowing
movable arm to go back to original position completing Circuit C.
2. Cutting wire leading to coil allows moveable arm to go back to original position
and completes Circuit C.
3. Spring attached to movable arm can overcome magnetic force exerted by coil
if power source A is weak and relay is jarred hard enough.
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Midlander Device
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Booby Trapped Flight Bag
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99 Hour Timer
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9V
Transistor
Black lead
Red
Lead
TNT
Switch
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555 Timer Circuit
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555 Timer Circuits
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