General Information on Ultrasonics
Numerous requests have been made for information on the effect of these devices on people.
None of these devices have the ability to stop a person with the same effect as a gun, club, or more conventional weapon. They will, however, produce an extremely uncomfortable, irritating, and sometimes painful effect in most people. Not everyone will experience this effect to the same degree. As stated, young women are much more affcctcd than older men due to being more acoustically sensitive. The range of the
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Figure 28-9 Controls and hookup instructions |
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devices depends on many variables and is normally somewhere between 10 and 100 feet from the transducers.
One possible use of the device (that deserves careful consideration) is for all Ihe transducers to protect
an area from unauthorized intrusion. This approach is excellent for protecting target areas such as jewelry boxes, gun cabinets, and safes and vaults. Normal use is to place each transducer to cover a given area.
Table 28-1 Phaser pain field property guard parts
Ref. # Qty. Description DB#
R1,6.8,18.19.20.21 7 IK, 7-i-watt resistor (br-blk-red)
R2/S2 500K pot and switch
R3 2.2K,1 Л-wait resistor (red-rcd-red)
R4.5 2 10K.’/-i-walt resistor (br-blk-or)
R7 10-ohm. ‘Л-watt resistor (br-blk-blk)
R9/S1 10K pot and switch
RIO 5 К trimmer resistor
R11 470-ohm, ‘/4-watt resistor (yel-pur-br) Ohms
R13.14. t5.16 4 .47-ohm, 3-watt resistor ^yel-pur-sil)
R17A and В 120-ohm, 1-watl resistor (br-rcd-br)
R22,23.24 З 39K. ‘/«-watt resistor (or-wh-or)
Cl,4 2 .01 mfd, 50-voU disc capacitor
C? 10 mfd. 25-volt electrolytic capacitor
C? 100 mfd. 25-volt electrolytic capacitor
C5 .033 mfd, 50-volt polyester capacitor
C6 1000 mfd, 25-vol (electrolytic capacitor
C9 22 mfd, 250-volt polypropylene capacitor
CIO, 11 2 .1 mfd. 50-volt polyester capacitor
LlAandB 2 1-millihenry .25-amp inductor 1U1MH
L2 1 – mil lihenry choke (see Figure 28-8) 1UIMF1PPC
ICt.2 2 555 DIP timer 1C
IC3 4001 Norgate complementary metal oxide semiconductor (CMOS) Dl P lC
1C4 4044 inverter/buffer CMOS dual in-line packagc integrated circuit
1 PN2907 GP PNP transisiOT
2 IRF540 power MOSFET T0220
Dl, 2,3 3 1N914 silicon diodes
LED Light-emilling diode
TD1,2,3.4 4 Polarized high-output ceramic transducers 1UMOTRAN
S4,5 2 Momentary pushbutton switches
J1.2,3,6 4 RCA chassis mount phono jacks
Pt. 2.3.6 4 RCA phono mating phono plugs
DCJ ACK 2.1 -millimeter DC jack
FI Fuse holder panel mount
LEDRET LED retainer hushing
Ref. # Qty. Description DB#
PC’PPPl PCB IUPCSONIC
PBl Alternate 2- X З-inch. l-inch grid perforated vector board
HS1 Heatsink bracket fabricated as shown
SWI/NU1 6-32 x 3/a-inch screw and nut for HS1 attaching to Q2
SW2 4 #6 X 3/K-inch sheet metal screw for cover
FEE Г 4 /г-inch stick-on rubber feel
CHASSIS Metal chassis fabricated as shown
COVER Plastic cover to fit chassis
[1] Rotate R8/S2 about 30 degrees CW and note that the voltage reaches a higher value before deactivating.
[2] Place the unit in a brightly lit area and connect it to a 12-volt power supply or wall adapter. Point the unit to a light source and then place your hand over the aperture. The
[3] Fabricate the base section, BASE, from а З X З X .063 aluminum plate and drill a hole to mount the heat sink of Ql, a small hole for SW2 to mount the BK1 bracket, and a 3/*-inch clearance hole for the BUI bushing. Trial-fit
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