KELVIN® Electronics Kits
  • KELVIN® Motor Speed Control Assembled Demo

    KELVIN® Motor Speed Control Assembled Demo

    Use Pulse-Width Modulation (PWM) to vary the speed of a DC motor from 0 to 100%. Can be used for any DC motors from 3 to 25 Volt with 3 Amp maximum current draw. It is ideal to control the speed of a fan, toy motor, model train and so on. Teacher Demo...

    $69.95
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  • KELVIN® Motor Speed Control Bulk Pack

    KELVIN® Motor Speed Control Bulk Pack

    Bulk Pack of 10 - As Low As $12.50 Per Kit! Use Pulse-Width Modulation (PWM) to vary the speed of a DC motor from 0 to 100%. Can be used for any DC motors from 3 to 25 Volt with 3 Amp maximum current draw. It is ideal to control the speed of a fan, toy...

    $125.00
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  • KELVIN® Motor Speed Control Kit

    KELVIN® Motor Speed Control Kit

    This kit uses Pulse-Width Modulation (PWM) to vary the speed of a DC motor from 0 to 100%. Can be used for any DC motors from 3 to 25 Volt with 3 Amp maximum current draw. It is ideal to control the speed of a fan, toy motor, model train and so on.

    $15.95
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  • KELVIN® Night Light Kit

    KELVIN® Night Light Kit

    Introduce your students to beginning electronic theory, electronic components, circuit boards and soldering with this kit. The KELVIN® Night Light kit uses a photocell to automatically turn on a super bright LED as the room darkens and turns off the LED...

    $5.95
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  • KELVIN® Night Light Bulk Pack

    KELVIN® Night Light Bulk Pack

    Bulk Pack of 30 - As Low As $3.95 Per Kit! Introduce your students to beginning electronic theory, electronic components, circuit boards and soldering with KELVIN®'s Night Light Kit. The KELVIN® Night Light kit uses a photocell to automatically turn on a...

    $118.50
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  • KELVIN® Night Light & Battery Charger

    KELVIN® Night Light & Battery Charger

    Includes PC board and parts including LED light, battery holder for a rechargeable AA battery (rechargeable battery not included) and solar panel. Requires soldering and assembly. Kit. PLEASE NOTE: KELVIN® reserves the right to substitute kit contents...

    $12.95
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  • KELVIN® 3D Christmas Tree Kit

    KELVIN® 3D Christmas Tree Kit

    This kit features 32 LEDs that can either blink in pattern or light up the whole board with the use of two switches. Easy assembly by sliding the two boards together onto the bottom board (where major components are soldered). Requires 9V battery.

    $15.95
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  • KELVIN® Hanukkah Menorah Kit

    KELVIN® Hanukkah Menorah Kit

    The Hanukkah Menorah features big 10mm LEDs to simulate candles. Two small, low profile switches help "turn on" the right amount of LEDs or reset the unit. The assembled board is 6 in. long and 3 in. tall. Each kit includes: pc board, switches, LEDs, and...

    $34.95
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  • KELVIN® Hanukkah Menorah Assembled Demo

    KELVIN® Hanukkah Menorah Assembled Demo

    The Hanukkah Menorah features big 10mm LEDs to simulate candles. Two small, low profile switches help "turn on" the right amount of LEDs or reset the unit. The assembled board is 6 in. long and 3 in. tall. Can be powered by 9v battery (220019) or a 9V...

    $85.00
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  • KELVIN® Flashing LED Heart Kit

    KELVIN® Flashing LED Heart Kit

    A heart is formed by 16 LEDs. The first switch flashes the whole heart, the second switch flashes 1/2 of the heart then the other. Requires a 9V DC battery.

    $11.95
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  • KELVIN® Bicycle Safety Light

    KELVIN® Bicycle Safety Light

    Build this kit and connect it to your bicycle or place it on your table top or on the wall for a conversation piece. Kit requires [2] AA batteries. Kit does not include an enclosure.

    $11.95
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  • KELVIN® Bicycle Safety Light Bulk Pack

    KELVIN® Bicycle Safety Light Bulk Pack

    Bulk Pack of 10 - As Low As $9.99 Per Kit! Build this kit and connect it to your bicycle or place it on your table top or on the wall for a conversation piece. Requires [2] AA batteries. Does not include enclosure.

    $99.95
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  • KELVIN® Bicycle Safety Light Assembled Demo

    KELVIN® Bicycle Safety Light Assembled Demo

    Build this kit and connect it to your bicycle or place it on your table top or on the wall for a conversation piece. Requires [2] AA batteries. Does not include enclosure, use 430202. Enough for 10 Students. Teacher Demo Unit, Assembled/Tested.

    $59.95
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  • KELVIN® Blinking LEDs Kit

    KELVIN® Blinking LEDs Kit

    When you want the attention you deserve, put this kit on your shirt, but you have to assemble and test it! This kit demonstrates how to blink 2 LEDs with common electronic components, i.e. transistors, capacitors, resistors. Requires 9VDC battery.

    $3.95
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  • KELVIN® Blinking LEDs Bulk Pack

    KELVIN® Blinking LEDs Bulk Pack

    Bulk Pack of 30 - As Low As $1.95 Per Kit! When you want the attention, put this kit on your shirt but first, you have to assemble and test it! This kit demonstrates how to blink two LEDs with common electronic components such as capacitors and resistors...

    $58.50
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  • KELVIN® Blinking LEDs Assembled Demo

    KELVIN® Blinking LEDs Assembled Demo

    When you want the attention, put this kit on your shirt-but first, you have to assemble and test it! This kit demonstrates how to blink two LEDs with common electronic components such as capacitors and resistors. Requires a 9V battery. Teacher Demo Unit,...

    $49.95
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  • KELVIN® Stroboscope Kit

    KELVIN® Stroboscope Kit

    Features a very powerful flash effect. For warning signs, as eye-catcher, alarm, etc. Adjustable strobing frequency. Requires a 9V battery or 12V DC.

    $15.95
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