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MATCO ELECTRONIC PUBLICATIONS
Presents
SCIENCE and MISCELLANEOUS
ELECTRONIC CONSTRUCTION PLANS

 

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#21000 EASY BUILD TESLA COIL PLANS
This science project shows how to construct a Tesla Coil using a step-up transformer. The completed project will produce up to 250,000 Volts, giving spectacular 6"-12" sparks of continuous high frequency energy. Great for science fair projects.
PLANS ONLY KIT #21000POK . . . . . . . . . . . . . . . . . . . . $9.95

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#21001 BINARY COUNTER PLANS
Using a cascade of flip-flop circuits and indicator lights, the state of each stage of this counter may be observed visually. You can demonstrate binary mathematics, addition, etc. Makes a good science fair project.
PLANS ONLY KIT #21001POK . . . . . . . . . . . . . . . . . . . . $4.95

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#21002 SOLID STATE GEIGER COUNTER PLANS
A new approach to a Geiger counter to determine relative radioactivity of different materials. A simple one night project. The printed circuit pattern permits quick completion of this highly accurate professional use Geiger counter. Additional circuit patterns included to add digital readout to the radiations indicator. Relative radiation is indicated by auditory output of a piezo-electric sound element.
PLANS ONLY KIT #21002POK . . . . . . . . . . . . . . . . . . . . $9.95

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#21003 NEGATIVE ION GENERATOR PLANS
Similar to commercially available ion generators costing $50-60 dollars. Build your own and save. Eliminates smoke, pollen, smog, etc. from your air. Breathe easier, be healthier. Easily built in one evening.
PLANS ONLY KIT #21003POK . . . . . . . . . . . . . . . . . . . . $4.95

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#21004 UNIVERSAL TIMER MODULE PLANS
This timer module could solve all your circuit timing needs. Small printed circuit board makes an easy to build and use module. Plan calls for a few parts including a 555 timer IC. Will produce timing delays or intervals from microseconds to hours! Board has provisions for either negative or positive edge triggering and will drive up to a 1000 MA load. Timing is adjustable with an on-board potentiometer and jumpers. Operates astable or monostable. Re-triggerable and re-setable. Can be used as square wave oscillator.
PLANS ONLY KIT #21004POK . . . . . . . . . . . . . . . . . . . . $2.00

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#21005 COLLOID SILVER MAKER PLANS
These plans will allow you to make your own colloid Silver Concentrate for less than one penny per gallon. Colloid Silver (sometimes called Colloidal Silver) has been used for decades as a very effective antiseptic as well as a healing agent.
PLANS ONLY KIT #21005POK . . . . . . . . . . . . . . . . . . . . $9.95

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