Category Archives: Electronic Gadgets for the Evil Genius BOB IANNINI

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

General Information on Ultrasonics

Figure 28-9 Controls and hookup instructions

General Information on Ultrasonics

General Information on Ultrasonics

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

Application and Setup

Your phaser property guard system is capable ot operating in two modes. Mode 1 is at a frequency known to produce paranoia, nausea, disorientation, and many other physiological effects. Mode 2 enables you to use the system as an audible alarm to frighten off intruders or warn the user. Both modes can be
used in combination and are easily front-panel-con – trolled by the user. Three separate jacks enable the detection of a broken trip wire or contact foil, a pres­sure or actuating switch, and a positive voltage-level pulse obtained from other detection equipment such as those listed in the Information Unlimited catalog.

Application and Setup

Figure 2B-8 Final assembly

The position of the transducers should be set to direct as much energy as possible to the points of intrusion or access. They can be directed ю any target area or be individually placed for multiple effects.

The power unit should be placed where the user can reset the device and preset the controls for maxi­mum effcct. Figure 28-9 shows the connections to the rear panel.

R ULIord of Caution

Ultrasonic is a gray area in many respects when an application involves the control of animals or even a deterrent to unauthorized intrusion. It is always best to consult with local, municipal, and state laws before using this device to protect your home or property. Remember that many state laws lean more toward the right of the criminal rather than the victim.

Detection Circuit Description

The detection circuits consist of inputs Jl, J2, and J3, which sense an intrusion and energize P5, enabling timer IC2. A reset switch (S4) enables the circuit to be reset. A test switch (S5) enables the verification of system operation. Detection circuit functioning, along with the appropriate jack identification, is shown in Figure 28-3.

Construction

To begin assembling the project, follow these steps:

1. Lay out and identify all the parts and pieces to the assembly board (see Figure 28-4), sense board (refer to Figure 28-3), and the remain­ing parts for the final assembly.

2. Assemble inductor LI as shown later in Fig­ure 28-8. Drill a small hole in the bobbin for the stan of the winding and wrap 50 turns of #24 magnet-enameled wire tightly and evenly along the bobbin length. Tape the winding in place and allow 2 inches for both the “start” and ‘‘finish’* leads. Assemble everything as shown, inserting core halves into the bobbin, and place the air gap spacers between them

Detection Circuit Description

Figure 28-3 Defection circuit schematic

These spacers can be from a cut-up business card. You should attempt to find a thickness of 3 mils (.003) and confirm with vernier calipers. Tape the assembly together or use elastics, О-rings, and so on. The finished induc­tor should read approximately 1 millihenry when measured on an inductance capacitance bridge.

3. Create the heatsink bracket HS1 from a.75 X 2 X .0625 aluminum piece. Bend it 90 degrees in the middle and drill a hole for the SW1/NU1 screw and nut, as shown later in Figure 28-8.

4. Assemble the PCB as shown in Figure 28-4. Note the polarity of all the diodes, transistors, integrated circuit, and electrolytic capacitors. Note the two wire jumps. Be careful of the solder bridges on the PCB foil as these can cause damage to circuit components. Attach approximately 6 inches of wire leads to the front and rear panel-mounted components per Figures 28-4 and 28-5. Note that most resistors are vertically mounted. Always leave at least a ’/iб-inch lead between the body of the component and the board.

Experienced builders may use a piece of.1- tnch grid perforated vector board. Use Figure 28-4 for parts location and the schematic for the connections. Certain leads of the actual components will be used for connecting points and circuit runs. Do not cut or trim them at this time. It is best to temporarily fold the leads over to secure the individual parts from falling out of the board holes. If you obtain a PCB, you may omit this step. Figure 28-6 shows the foil layout.

5. Assemble a sense board from a piece of 2 lU – X 1 72-inch of Л-inch grid perforated board per Figure 28-7.

Insert the components into the board holes as shown. Certain leads are used for connecting points and circuit runs. Do not cut anything at this time. Fold over the leads to secure the parts in place.

Please read the following before doing any soldering:

a. Components are mounted both horizontally and vertically. Leave at least l/in of an inch between the part and the board surface.

Detection Circuit Description

Figure 28-4 Printed circuit board (PCB) wiring first level

b. Verify the polarity of ІСЗ, IC4, D1, D2, and D3.

Use a good, pencil-type soldering iron, keep­ing the tip tinned and cleaned. Use rosin core solder. Do not overheat the solder joint as you may damage a component. All the connec­tions should be smooth and shiny. Avoid excess solder.

Wire as shown, using the dashed lines as the circuit runs.

6. Attach the wire leads to the related front and rear panel components as shown.

Connect the interconnecting leads with the circuit board (see Figure 28-4) for P2. AUX12V, and P5, SHUTDOWN.

Note that most of these interconnecting leads are approximately 6 inches in length

7. Wire L2A. L2B, R17A, and R17B to the rear of transducers TD1 through 4, as shown in Figure 28-8. Note securing the two-conductor speaker leads is, done via a small nylon clamp.

8. Check the wiring for accuracy, correct compo­nents, the quality of the solder joints, short cir­cuits, foil shorts on the circuit board, pinched wires, and debris.

Final Rssembly

To complete the assembly, follow these steps:

1. Fabricate the chassis from a piece of 6- x 7- x .063-inch aluminum, as shown in Figure 28-8. Bend up 1 ‘/2-inch sections for the front and rear panels. Then bend up ‘/2-inch flanges to mount the cover via four sheet metal screws (SW2).The location ot most ot the mounting holes is not critical and may be “eyeballed.”

However, the holes for R2 and R9 should be measured to match the PCI PCB pads.

Detection Circuit Description

Figure 28-5 PCB wiring second level

2. Fabricate the cover from a piece of 8V2 – x 5- X Vi6-ineh-thick plastic or aluminum. Form it to fit over the chassis and secure it via mating holes for the SW2 serews.

3. Fabricate a 44л – X 3’/2-inch piece of plastic or cardboard insulating material for placement between the circuit boards and the metal chassis.

4. Finally, assemble the circuit boards and the panel-mounted components to the chassis as shown in Figures 28-4 and 28-5. Twist the leads and dress as shown. Use a small piece of sticky tape to hold them in place.

Test Procedure

Testing the device can be done by following these steps:

1. Insert a 1 – amp fuse into Fl, connect a shorting plug into J3, as shown in Figure 28-9, preset controls to full counterclockwise (CCW), and click “off.”

2. Apply 12 volts to the DC jack from a bench supply. You may useTl or a 1-amp wall adapter if a supply is not available.

3. Connect a scope to pin 3 of IC2. Turn on R9 and note a square wave, as shown in Figure 28-2. Rotate R9 a full clockwise (CW) turn

Detection Circuit Description

Figure 28-Б View offoil routing and pad location

Testing Detector-Sensing Circuit

To test the detector circuit, follow these steps:

1. Momentarily press S4 (RESET) and the unit shuts down. Press S5 (TEST) and the unit turns on. Repeat this action several times to verify proper operation.

2. With the unit in the reset mode, temporarily remove the shorting plug from J3 and note the unit turning on.

3. In the reset mode, temporarily short J2 to

and adjust RIO for a period of 50 microsec­onds (usee). This sels Ihe high-frequency range to 20 kHz.

Obtain hearing protection for the next steps.

4. Temporarily connect the four-transducer assemblies in parallel and connect to J6.Tum RIO a full CCW turn and note a piercing, shrill, and uncomfortable shriek. Adjust RIO CW and note the pitch increasing to an upper – frequency limit.

5. Turn on R2 and note the frequency of the shriek periodically changing. Adjust and note a sweeping action varying from very slow all the way lo a chirping sound.

ground and note the unit turning on.

Detection Circuit Description

Figure 28-7 Sense board layout and wiring

Still in Ihe reset mode, temporarily connect a 5-volt level to J1 and note ihe unit turning on.

Special Notes

The transducers used in this system are piezoelectric and consequently are many times more efficient than the electromagnetic type. Several operational curves and charts are available and intended for those who may want to modify or optimize the existing circuitry tor a particular range of frequencies, beam spread, and placement.

Project Description

The following product is intended to be a property – or hornc-protection device. It consists of a field of acoustical, ultrasonic, high sound pressure energy that is triggered when unauthorized intrusion is detected.

Detection consists of the following functions:

• A “trip wire” or closed system such as taped glass windows and doors where a break or open triggers the unit. This function is viaJ3.

• A “switch” input where a closure to ground such as a pressure switch, door, or entrance switch triggers the unit. This function is via J2.

• A "■+ level” input where a voltage pulse or level from other detection equipment such as an infrared intrusion, motion, or sound detec­tion system triggers the unit. This function is via JL

Test and Reset buttons enable total system con­trol.

Upon activation via the above, a moderately pow­ered sourcc of acoustical, ultrasonic energy is pro­duced. causing certain adverse effects to the intruder. These may be paranoia, severe headaches, disorienta­tion, nausea, cranial pain, an upset stomach, or just plain irritating discomfort. Most people are affected in one way or the other, with young women unfortu­nately being the most sensitive. External adjustments enable the user to select clearly audible sounds that serve as an alarm, high-frequency energy that pro­duces the physiological effects, or a combination of both.

The sound pressure level is less than 130 db and will not produce permanent damage if exposure is kept to a minimum. Obvious prolonged exposure is not encouraged for these reasons. A rule of thumb is to keep exposure to less than I hour with a frequency less than 20 kHz at a sound pressure of 105 db or over.

The system consists of the central power and con­trol unit that powers up to six remotely located trans­ducers. These are now positioned to take advantage of potential entrance and intrusion areas, considering that each transducer can produce up to 118 db meas­ured at 1 meter. Since the sound pressure level is log­arithmic. an attenuation factor of -3 db must be factored in every time the distance is doubled from one of the transducer stations.

□river Circuit Description

A timer (IC2) is connected as a stable, free-running multivibrator whose frequency is externally con­trolled by pot R9. The trimmer resistor (RIO) selects the range limit of R9. Capacitor C5, along with the resistors, determines the frequency range of the device (see Figure 28-2).

The square wave output of 1C2 is via pin 3 and is connected to metal-oxide-semiconductor fieid effect transistor (MOSFET) Q2.The drain of Q2 is DC biased through Ll. The amplified square waves are fed to the transducer via resonating coil LI and capacitor C8, along with Q spoiling resistors. R13 through R16. Resonating coils (L2A and L2B) are selected to tune out the inherent capacity of the transducer at their upper-frequency limit, usually around 25 kHz. A sinusoidal wave is generated and allows the transducers to operate at a higher peak power level than the equivalent voltage square wave would. Resonant peaking of the voltage is also obtained. These transducers, unlike their electromag­netic counterparts, have a tendency to draw high cur­rent at higher frequencies. This effect is compensated to an extent by power resistors R17A and R17B. Note the wave shapes shown are at a fixed frequency of 20 kHz.

Timer IC1 is similarly connected as a stable, run­ning multivibrator and is used to produce the sweep­ing voltage necessary for modulating the frequency of lC2.The switch section of R2/S2 activates it, and this sweep repetition rate is controlled by the pot sec­tion R2. Resistor R3 limits the lower range of this repetition time. Capacitor C2 sets the sweep time range. Output from IC1 is via pins 6 and 2 where the signal ramp function voltage is resistively coupled to inverter transistor Ql via resistor R4.The output of Ql is fed to pin 5 of 1C2 and provides the modula­tion voltage necessary to generate the sweeping fre­quency action required. Note that this signal is easily
disabled via the switch section of R2/S2.This is a con­venience when initially setting or checking the range of 1C2 as it eliminates the constant varying fre­quency.

Project Description

Figure 28-2 Phaser pain field property guard schematic

Power is supplied to the system via a conventional step-down converter wall transformer,!!, which con­nects to the system via the DC JACK chassis mount connector. Power is controlled by switch SI that is part of the frequency control pot R9. A light-emitting diode (LED) indicator lamp and an associated cur – rent-limit resistor (R11) tell when the system is ener­gized.

Pain Field Property-Protection Guard

Pain Field Property-Protection Guard

Figure 28-1 Phaser property protection guard

This chapter otfers an excellent home – and property – protection project when properly built that provides a low-liability deterrent to unauthorized intrusion from both two – and four-legged threats. Once activated, strategically placed transducers project an uncomfort­able and disorientating field of complex acoustical sound and shockwaves. It is a harmless effect yet dis­courages most intrusions in a defined area.

A reasonably simple electronic system can power up to eight individual transducer emitters positioned in the target area (see Figure 28-1). Activation can be an open or closed fault switch or a voltage level such as that produced by our laser property guard described in Chapter 12.‘‘Laser Property-Protection Fence.” Together these projects can be interfaced to produce an effective intrusion detection and deter­rent system. Expect to spend $50 to $100 with hard – to-find parts available at www. amazingl. com. The complete parts list is outlined in Table 28-1.

Warning: Do not operate this system at continuous, high output at frequencies below 20 kHz. Daily sound pressure exposures in excess of 1 hour at 105 decibels (db) may lead to hearing impairment. When properly used, this device provides a limited liability deterrent. It should not cause permanent damage or trauma.