New Products
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80 Watt Car Stereo Booster Kit
Our highest power booster amplifier kit is only 4 1/8" L x 2 1/2" W x 1 3/8" H yet it can take a low output car stereo and transform it into a booming powerhouse! Features two crystal clear 40 watt RMS channels for great sounding stereo sound! Operatesfrom as low as 6VDC up to a maximum of 18VDC so it will work in any car. Maximum current draw is 7.5amps and idle current is only 115ma. Power output with typical car input of 14.4VDC is as follows: 40 watt per channel into a 2 ohm speaker load, or 25 watts per channel into a 4 ohm speaker load. Simple to use-just connect the input of the booster kit to your car radio, CD player, etc. output wires and connect any speakers (capable of handling 40 watts) to each output channel. Maximum power occurs at 2ohm impedance for each set of speakers. Features 2 level controls (one for each channel). Complete with all parts, PC board and instructions. $64.95, free shipping in the USA.
120VAC Variable Stobe Light Kit
One of our most popular strobe light kits - thousands of these are in use. Features variable flash rate and straight xenon strobe tube. Speed can be varied from about 120 to 200 flashes per minute. Great for discos, parties, dances, displays, etc. Operates from standard 120VAC. Size of board: 3" x 2". Complete with all parts, PC board and instructions. Skill Level 2. You MUST know AC safety precautions before building this kit.
$34.95. Free Shipping in the USA.
Telephone Ring Flasher Kit
Here's a useful kit to prevent missed phone calls when the TV or stereo is a little too loud. Simply plug the modular phone cord on this kit into any phone jack. Now each time any phone in the house rings a brilliant red light from 5 red LEDs will flash. Great for people that have difficulty hearing some of the new "softer ring" phones. Operates for months on one 9V battery (not included). Come with all parts, PC board and instructions. Size of board: 2 1/2" x 1 1/2".
$29.95. Free Shipping in the USA.
CMOS/TTL Logic Probe Ki
This CMOS/TTL Logic Probe Kit is a handy, reliable, and inexpensive logic probe that was designed to operate with voltages between 5 and 20 volts. This logic probe is the ideal tool for troubleshooting CMOS and TTL digital circuits. It has a visual indicator that consists of a red LED and a green LED. The red LED indicates a High (1) logic state, and the green LED indicates a Low (0) logic state. This logic probe is small, easy to build, and easy to use. Operates from the power of the circuit being tested. Size of PC board: 3 5/8" x 1 1/4". Complete with all parts, PC board and instructions.
$29.95. Free Shipping in the USA.
Battery Tester Kit
One of handiest items to have around the house is a battery tester. Our Battery Tester Kit is just the answer to test all types of common batteries. Simple to use - just select the battery voltage to be tested by rotating the selection switch and connectthe clip leads to the battery. If the battery is good, the green LED lights. If it's bad the red LED lights. Still wondering about the quality of that 9V battery - well, just press the load switch - if the green LED still remains on then you've got a good battery! Kit features 5 calibration trim pots to allow you to set up your tester to test any 5 different type batteries that you frequently use. Size of board: 2.6" x 3.5". Operates from one 9V battery (not included). Complete with all parts, PC board and instructions.
$29.95. Free Shipping in the USA.
Plant Soil Monitor Kit
This time saving kit allows the user to determine if the plant soil needs more watering or is wet enough. Features IC circuitry and two bright LEDs. Green LED indicates ample moisture, red LED indicates more water is needed. Kit comes with simple moisture probe and has trimmer control to adjust kit to a "standard" of moisture content. Helps prevent over-watering or under-watering of plants, gardens, etc. Operates on 9V battery (not included). Size of board: 2" x 1.6". Complete with all parts, PC board and instructions.
$24.95. Free Shipping in the USA.