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Practical-Electronic EVERYDAY DECEMBER 1997 ELECTRON http://www.epemag.wimborne.co.uk £2.65 pa; cinE, GIANT PULL•OUT , • • «Mr am, - DettgeR:)t tam 4"- ACTIVE , •• MICROPHONE • A simple circuit to increase sensitivity P. rs .• • • - - MINI - •• - • L. tr. ORGAN 1:7 \ An unusual, inexpensive •P 7 " • e design t Ort 9. SA 11 '7 • SOUND rtr1 1 Alarm deterrent for P1R securit hts TEACH-IN 98 ........ Part 2: Capacitors and Inductors Index for Volume 26 THE Noil MAGAZINE FO. ELL TECHNOLOGY- r ra spedal ALTERNATIVE _.•ii 9 770262 361089 Feat and FUTURE TECHNOLOGIES ELECTRIC MAN PLANS, SHOCK PEOPLE WITH THE TOUCH OF YOUR HAND! E5/set Ref F/EMA1 PARABOLIC DISH MICROPHONE PLANS Listen to distant sounds and voices open windows sound sources in 'hard to ger or hostile premises Uses Satellite technology to gather distant sounds and focus them to our ultra sensitive electronics Plans also Sn0,11 xn optional wireless link system £8/set ref F/PM5 2 FOR 1 MULTIFUNCTIONAL HIGH FREQUENCY AND HIGH DC VOLTAGE, SOLID STATE TESLA COIL A AND VARIABLE 100,000 VDC OUTPUT GENERATOR PLANS Operates on 9-12v0c, many possible experiments £10 Ref WIND GENERATORS 380 WATT 1 14 metre rta cades aaroon riatri cades .a year warranty vdc output 24v version available control electronics included brushless neodymium cubic curve alternator only two moving pans maintenance free simple roof top installation start up speed 7mph max output (30mph) 380w £499 ref AIR1 PLANS PORTABLE X RAY MACHINE PLANS Easy to construct e e- plans on a simple and cheap way to build a home X-ray rnachinei Effective device X-ray sealed assemblies can beused for experimental purposes Not a toy or for minors' £6,/set Ref F/XP I TELEKINETIC ENHÀNCER PLANS Mystrfy and amaze your COLOUR CCTV friends by creating motion with no known apparent means or cause Uses no electnca Ior mechanical connections no special gimmicks yet produces positive motion and effect Excellent for science projects. VIDEO magic sho.vs party demonstrat tons or serious research 8 development of this strange and amazing psychic phenomenon £4/set Ref F/TKE1 CAMERAS ELECTRONIC HYPNOSIS PLANS 8. DATA This data shows several ways to put subjects under your control included ma full BRAND NEW AND CASED. FROM F9 9. volume reference text and several construction plans that when Works with most modern video's, TV's, assembled can produce highly effective stimuli This material must be used cautiously It is for use as entertainment at parties etc only by Composite monitors, video grabber cards those experienced in its use £15/set Ref F/EH2 etc GRAVITY GENERATOR PLANS This unique plan demonstrates Pal. 1v P-P, composite, 75ohm, 1/3" CCD, 4mm F2.8, asempleeJectrical phenomena that produces an anb-gravety effect You H1ELIOS PNB-2 RUSSIAN can actually build asmall mock spaceship out of simple materials and 500x582, 12vdc, mounting bracket, auto shutter, without any visible means- cause it to levitate £101set Ref FIGRA1 100x50x180mm, 3 months warranty,1 off price £119 BORDER GUARD WORLDS SMALLEST TESLA COIL/LIGHTENING ref XEF150, 10 or more £99 ea 100+ £89 DISPLAY GLOBE PLANS Produces up to 750.000 volts of OBSERVATION discharge experiment with extraordinary I-4V effects 'Plasma in ajar St EImo's fire. Corona. excellent science project or conversation piece BINOCULARS £1799 £5/set Ref F/BTC1/LG5 Intended for the medium to tong range observation of air arid ground COPPER VAPOUR LASER PLANS Produces 100mw of targets and the determine tion of their angular co-ordinates These visible green light High coherency and spectral quality similar to Argon giant binoculars are a tribute Russian optical ingenuity with a laser but easier and less costly to build yet far more efficient This perforrnance that simply has to be seen to be believed A large ent pupil particular design was developed at the Atomic Energy Commtseon of diameter of 7 33mm provides exceptional light passing power which NEGEV in Israel £10/set Ref F/CVL 1 when combined vath its high VOICE SCRAMBLER PLANS Minature solid state system turns magnification of x15 allows the user to view over vast distances with speech sound into indecipherable noise that cannot be understood delightfully bright crisp high resolution images Robust and able in without asecond matching unit Use on telephone to prevent third party construction incorporating an uncomplicated yet thoughtfully designed listening and bugging £6/set Ref FNS9 mechanical layout ensuring ease of operation and quick precise PULSED TV JOKER PLANS Little hand held device utilises targeting These binoculars have awide variety of applications and are pulse techniques that will completely disrupt N picture and soundi suitable for use by coastguards law enforcement organizations cus works on FM tool DISCRETION ADVISED £8/set Ref F/TJ5 toms. furthers etc BODYHEAT TELESCOPE PLANS Highly directional long Specifications range device uses recent technology to detect the presence of living XIS magnification 110mm objective 6 deg angle of view Field at bodies warm and hot spots heat leaks etc Intended for security law SUPERWIDEBAND 100m=105m focusing 10m-inf fully coated precision ground optics enforcement research and development etc Excellent security device orange and neutral filters rubber lens caps rapid tergetting hand grips or very interesting science project £8/set Ref FIBHT1 RADAR DETECTOR padded headrest screw in silica gel cartridges wooden tripod, operating temperatures -40 c to .50 c weight 25kg, (15kg without BURNING, CUTTING CO2 LASER PLANS Projects an tripod) supplied in wooden carrying case invisible beam of heat capable of burning and melting materials over a 360 deg COVERAGE Border guard binoculars £1799 ref PNB2 considerabledistance This laser soon of the most efficient converting Detects " .iar and laser, X. K. superende KA bar'J, LD signal 10% input power into useful output Not only is this device aworkhorse strength cAsuiaii Audio and visual alerts, Alert pnorrty Rear and front in welding cutting and heat processing materials but dis also a likely facing optical waveguides Triplecheck verification city mode tutorial candidate as an effective directed energy beam weapon against mode dark mode aux jack. volume control These may be missiles. aircraft ground-to-ground etc Particle beams may very well illegal to use in certain countries utilize alaser of this type to blast achannel in the atmosphere for ahigh 1 1",x2 7"x4 energy stream of neutrons or other particles The device is easily Superband £149 ref RD2 applicable to burning and etching wood cutting, plastics textiles etc £12/set Ref F(LC7 DYNAMO FLASHLIGHT Interesting concept ro batteries needed just squeeze the trigger for instant light apparently even works under water an emergency although we haven't tried it yeti £6 99 ref SC152 ULTRASONIC BLASTER PLANS Laboratory source of sonic shock waves Blow holes in metal produce 'cold' steam atomize / PLACE YOUR ORDER eduides Many dear-erg uses for PC bOards jewffery. coins small parts etc £6/set Ref FfULB1 ( VIA OUR WEBSITE AT ANTI DOG FORCE FIELD PLANS Highly effective circuit produces time variable pulses of accoustical energy that dogs cannot 3ULL-ELECTRICAL.COM / tolerate £6/set Ref F/DCX- 2 LASER BOUNCE LISTENER SYSTEM PLANS Allows you to hear sounds from apremises without gaining access £12/set Ref F/ LUST1 PHASOR BLAST WAVE PISTOL SERIES PLANS Handheld has large transducer arid battery capacdy with external BULL ELECTRICAL controls £6/set Ref F/PSP4 250 PORTLAND ROAD, HOVE, SUSSEX INFINITY TRANSMITTER PLANS Telephone line grabber/ BN3 5QT. (ESTABLISHED 50 YEARS). TZS4 INFRARED room monitor The ultimate in home/office security and safety' simple MAIL ORDER TERMS: CASH, PO OR CHEQUE to use' Call your home or office phone push a secret tone on your telephone to access ether A) On premises sound and voices or B) WITH ORDER PLUS £3.50 P&P PLUS VAT. NIGHT SIGHT Existing conversation with break-in capability for emergency messages 24 HOUR SERVICE £5.00 PLUS VAT. One of our top most sellind night sights is this Russian TZS4 This sight £7 Ref F/TELEGRAB OVERSEAS ORDERS AT COST PLUS £3.54 enable you to see in very law light levels. or with the aid cd the built in BUG DETECTOR PLANS Is that someone gett ng the goods on infra red illuminator- in total darkness In 1/4 moonlight you would spot you" Easy to construct device it:cafes any hidden source of radio (ACCESS, VISA, SWITCH, AMERICAN EXPRESS) a man at 150m. In total darkness at 75rn Magndication 2 energy! Sniffs out and finds bugs and other sources of bothersome 240x66x190mm. 0 9kg. focusing range 15m-infinity M42 camera interference Detects low high and UHF frequencies £5Jset Ref Fl 'phone orders: 01273 203500 mount included. runs on 2xAA batteries. 100mm focal length. 8 deg BD1 illuminator divergence 50hrs continuous (no illuminator) 10hrs with ELECTROMAGNETIC GUN PLANS Projects a metal °beet FAX 01273 323077 carryingcase and strap a considerable distance -requires adult supervision £5 ref F/EML2 E-mail [email protected] TZS4 Nightsight £199 ref BAR61 ISSN 0262 3617 EVERYDAY PROJECTS .. THEORY .. NEWS .. COMMENT ... POPULAR FEATURES PRACTICAL ELECTRONICS http://www.epemag.wimborne.co.uk The No. 1 Magazine for Electronics Technology VOL. 26 No. 12 DECEMBER 1997 and Computer Projects ePieoiecis an? CheCifitS SAFE AND SOUND by Terry de Vaux-Balbirnie 822 Put high priority on your security and foil the villains with our lit-up bleeper slave! ACTIVE MICROPHONE by Andy Flind 838 The sensitivity of this easy-to-build circuit will work wonders for your cassette recorder's hearing power CAR IMMOBILISER
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