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Educational Kits

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DIGITAL TACHOMETER
K2625
For cars or motorcycles with a petrol engine. May be used as a general purpose revolution counter.
Specifications
 range: 100 - 9900 revolutions/minute
 2 digit display
 easy calibration
 power supply: 10 - 15V DC / 200mA
 PCB dimensions: 3.2" x 1.8" + 3.2" x 2.4"
 front panel dimensions: 2.8" x 3.5"
 recommended transformer: -
YDI Price $39.99
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RELAY CARD
K2633
Connecting a number of relays to the outputs of an electronic network may seem very simple, but in reality it might possibly create some problems regarding the cabling. This kit provides an attractive and compact alternative. Moreover, it can be assembled and connected very rapidly.
Specifications
 4 x 3A relay outputs
 power supply: 9V DC / 300mA
 pcb dimensions: 3.0" x 2.7"
YDI Price $24.99
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QUAD TRIAC SWITCH CARD
K2634
Relays are usually used to switch AC voltages by means of an electronic control because of their simplicity. However, when switching occurs too frequently or too quickly the life time of the contact points is shortened considerably. This can be solved perfectly by replacing the relays with a triac. Using optocouplers, the entire interface network remains electrically isolated from the voltage that has to be switched.
Specifications
 4 triac outputs: 4 triac outputs of 1.5A (uncooled, 4A cooled)
 power supply: 9V DC, 200mA
 PCB dimensions: 3.1" x 3.5"
YDI Price $26.30
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SPEED CONTROLLER
K2636
Designed to control AC motors with carbon brushes (drilling machine, vacuum cleaner, saw, …). High torque, even at low r.p.m. May also be used for low voltage loads (24V). Supply and load circuit electrically isolated from one another.
Specifications
 voltage supply: 110-240V
 load voltage: 24-240V AC / 5.5A max.
 adjustable minimum r.p.m.
 low interference level
 range: 5-95%
 PCB dimensions: 5.1" x 3.0"
 -: -
YDI Price $26.30
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FROST INDICATOR
K2644
Drive more safely in freezing weather. This kit uses a flashing LED to indicate a road temperature close to freezing point ; below that point the LED is on continuously. A reliable temperature sensor with mounting stud is included.
Specifications
 power supply: 10 - 15V DC / 25mA
 PCB dimensions: 2.2" x 1.7"
YDI Price $14.99
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CALL CODE ACTIVATED SWITCH
K2650
This remote control system requires no authorisation from network operators as there is no connection to the telephone line. The receiver is switched on and off by letting the phone ring several times (number of rings is adjustable). There are many applications : turning lights on and off at irregular intervals during a long absence, turning on the heating before you drive home or to your weekend residence, and so on ...
Specifications
 coded: 42 different codes can be set
 switch-off timer: can be set from 3 seconds up to 56 hours
 relay output: 240V / 3A max.
 power supply: 12VDC regulated / 90mA
 PCB dimensions: 5.5" x 2.9"
YDI Price $39.95
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ELECTRONIC WATCHDOG
K2655
A circuit that produces a natural sounding barking dog with a sensitive "ear" to everything that comes near it. It is a faithful watchdog, which never sleeps and never has to be taken out for a walk.
Specifications
 power supply: 2 x 8V AC or 9 - 12V DC / 500mA
 choice of two different "dog sounds"
 reacts to surrounding noise with adjustable sensitivity
 speaker output: 2W at 4ohm
 PCB dimensions: 5.6" x 3.0"
YDI Price $39.90
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Many other Brands Of Kits Are Available!
Bring your Friends & Family to Visit America's Unique Electronic Store.
Prices current 11/8/2008. Prices are subject to change without notice. The kits shown above are typically stocked by "You-do-it" Electronics Center. We try to maintain a current listing of current models. Occasionally products which are out of production may be listed on our website. Please E-mail Sales@youdoitelectronics.com or Call for current availability. Prices are subject to change without notice. All orders are subject to acceptance by this company & our Vendor in accordance with its standard acknowledgement form. All prices are subject to all applicable State and/or Local sales taxes. Terms are MasterCard, Visa, Discover, or American Express or Check with order, unless other arrangements are made with our credit department.
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