Amplifying With Vacuum Tubes: Circuit Design Guide for the Novice

  • FORGET ABOUT VACUUMING FOR UP TO 45 DAYS: A bagless, self-emptying base holds up to 45 days of dirt and debris..
  • POWERFUL SUCTION: Deep-cleaning power to take on large debris, small debris, and pet hair on carpets & floors. Filter type: Non-washable filter.
  • NO HAIR WRAP: Self-cleaning brushroll removes pet hair and long hair as it cleans--no more hair wrap..
  • PHONE OR VOICE COMMAND: Schedule whole-home cleanings or target specific rooms or areas to clean right now with the SharkClean app or voice control with Amazon Alexa or Google Assistant..
  • TOTAL HOME MAPPING plus ROOM SELECT: Maps your home and lets you choose which rooms to clean right now..
  • ROW-BY-ROW CLEANING: Methodically cleans row by row and then navigates room to room for complete home coverage..
  • RECHARGE AND RESUME: The Shark IQ Robot vacuum will return to the dock, recharge, and can pick up where it left off..
  • PERFECT FOR PETS: Designed for homes with pets, this automatic vacuum features a self-empty base, a self-cleaning brushroll, and a high-efficiency filter to capture dust, dander, and pet allergens..
  • MULTI-STAGE FILTRATION: Captures and traps 99% of dust, dander, and pet allergens. (Down to 1 micron).
  • WHAT'S INCLUDED: (1) Shark IQ Robot, (1) Self-empty base, (2) Side brushes, (1) Filter.
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Honeywell HPA830W Designer Series HEPA Air Purifier Tower, Medium-Large Room (190 sq ft), White – Features Intelligent Auto Mode and UltraQuiet Technology

  • ...helps capture up to 99.97% of the following microscopic airborne allergens & particles: dust, pollen, pet dander, dust mite debris and smoke.*.
  • AIR QUALITY DISPLAY – This Honeywell Air Purifier features a VOC Sensor & Air Quality Indicator that illuminates the floor so you can see air quality from across the room. Automatic Cleaning Mode adjusts to the optimal cleaning level for cleaner air..
  • EFFECTIVE AIR CLEANING AND CIRCULATION – The Honeywell HPA830 Air Purifier features 3 cleaning levels and is independently tested and AHAM Verifide to circulate and filter room air up to 4.8x per hour in a 190 sq. ft. room.**.
  • ULTRA-QUIET TECHNOLOGY – The Designer Series HEPA Air Purifier is the ideal air purifier for bedrooms. It features UltraQuiet Technology, sleep mode and an essential oil tray for optional aromatherapy to help create an optimal environment for sleep..
  • COMPATIBLE DOES NOT MEAN COMPARABLE – Includes initial filters. For best performance, use only Genuine Honeywell air purifier filters. Compatible air purifier filter replacements are not guaranteed to offer the same filter life, performance or efficiency..
  • GENUINE FILTER REPLACEMENTS – Search B003UH9I2G for Honeywell HRF-AP1 replacement pre-filter and B09NB2SVXN for HRFJ830 replacement pr....
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Makita VC4210L 11 Gallon Wet/Dry HEPA Filter Dust Extractor/Vacuum

  • Powerful 12 AMP Motor Generates 148 CFM of Suction Power and 92" of Water Lift.
  • Automatic Filter Cleaning System for longer filter life.
  • HEPA filter captures 99. 97% of particulates . 3 microns and larger.
  • Efficient two stage filtration system with main flat filter captures 99. 95% particles 2 microns and larger.
  • On-board tool-activated power outlet starts and stops vacuum with a 10 second "off" delay to clear any remaining debris.
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Robot Vacuum, GOOVI by ONSON 2100Pa Upgrade Robotic Vacuum Cleaner with Gyroscope, Self-Charging Vacuum with Boundary Strips, Pet Hair, Hard Floor, Carpets

  • 2100PA Powerful Suction Technology : MAX strong suction to absorb dust, debris and dirt. With automatic carpet supercharging function, easy to operate with remote control.
  • Intelligent Cleaning System : 2.81 "low-grade design, effectively identify furniture, obstacles and stairs.Has a degree of climb of 12-15 . 0.5L large-capacity trash storage box, 2600mAh lithium-ion battery.
  • Premium Features : The infrared sensor prevents unnecessary collisions, anti-drop technology prevents falls. The automatic automatic charging function ensures that it is always kept clean.
  • Smart Cleaning Mode : A variety of optional cleaning modes and Use included magnetic boundary strips to form a vacuuming zone. quiet and noiseless thorough cleaning, make it easy to clean while working, sleeping, or away from home.
  • What You Get : 1-Year Warranty, 2x 6.6ft magnetic boundary strips, 4x side brushes, 1x extra filter, 1x remote control (2 AAA batteries included), 1x charging dock, 1x AC power adapter, and 1x cleaning tool.
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Intex Deluxe Wall-Mounted Swimming Pool Surface Automatic Clean Skimmer (2 Pack)

  • Help catch leaves and debris before they sink to the bottom of the pool with the Intex Deluxe Wall Mount Surface Automatic Skimmer.
  • Easily mounts to Easy Set or metal frame pool sidewalls with an adjustable bracket and attaches to the filter pump for automatic skimming.
  • Durable polypropylene plastic construction is not affected by pool chemicals and the strainer basket pulls out for easy cleaning.
  • Requires an Intex filter pump with a minimum flow rate of 800 GPH (3,028 L/hr).
  • Strainer basket is easy to clean and removes in an instant.
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VEVOR Extractor Collector 11 Gallon Capacity HEPA Filtration System Automatic Dust Shaking 1200W Powerful Motor Wet & Dry Vacuum Cleaner 11 GAL Silver

  • Automatic Cleaning: The Wet / Dry Vacuum has a larger capacity of over 11 gallons / 40 L, making small clean-up jobs a breeze for you as you don’t have to empty the bucket frequently anymore. With automatic filter cleaning, the VEVOR dust extractor cleans the filter every 15 seconds to help maintain maximum suction power..
  • Versatile & Powerful: Thanks to the 1200W 1.6 HP motor, this vac offers powerful enough suction needed for almost any cleanup jobs on the vehicle, job site, workshop, garage, basement, van, house, etc. With strong airflow and suction power, the dust extractor delivers a maximum 148 cubic feet of air per minute rate (CFM), with a sustainable maximum 92 in. static water lift..
  • 3 in 1 Function: Our multifunctional vacuum cleaner can absorb dust & water, and blow air. you can vacuum both wet liquid spills and dry debris, and dust, or blow leaves away(use blower port), just organize the hose and power cord after using, them conveniently..
  • Farther Cleanup: With over 15 ft/ 4.5 m of cleaning reach(5 ft / 1.5 m hose, 10 ft / 3 m power cord, and 2 pieces of extension wands), it’s easy to do a farther cleanup for you without unplugging the unit. While it has four swivel casters for convenient and easy maneuverability..
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Saeco super-automatic espresso coffee machine with an adjustable grinder, double boiler, for brewing espresso, cappuccino, latte & flat white. SM7685 Xelsis

  • MULTIFUNCTIONAL Super-automatic espresso coffee machine with an AUTOMATIC CAPPUCCINO system that delivers a tasty barista-quality Cappuccino, Latte and Flat white in less than 3 minutes. Can be used with either coffee beans or ground coffee for preparation of two cups of coffee within a single brewing cycle..
  • PROFESSIONAL Brew two cups of magic drink simultaneously with Saeco bean-to-cup brews two cups. Great brewing without having to learn how to be a barista. This fully automated machine has an integrated coffee grinder with 12 adjustable grinding settings, a pump generating up to 15 bars of pressure, a water filter, an automatic milk frother,a milk jug as well as electronic temperature control..
  • USER FRIENDLY. A super-automatic espresso maker can deliver the coffee shop experience to the comfort of your home, any time you feel the urge. System equipped with a TOUCH SCREEN, a water tank, a frothing unit, a bean hopper & coffee-grounds container withr and also provides adjustable water, milk & coffee drink quantity..
  • EASY TO CLEAN Automatic cleaning with Descaling, cleaning and rinsing programs with a milk System cleaning indicator. All removable components of the Saeco super-automatic espresso coffee machine are dishwasher safe..
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DeWALT DWXAF101 Air Filtration System, 3-Speed Hanging Ceiling Dust Collectors for Woodworking, Remote Controlled Dust Collection Systems, 2 Stage Filtration, for Shop Garage

  • 2-Stage Filtration: Includes a static cotton medium efficiency filter (cleanable) and an H11 HEPA high-efficiency filter, which can filter more than 95% of 0.3μm particles..
  • 8H Timer Settings: Built-in timer settings for 1H, 2H, 4H, and 8H will shut off automatically at the end of the designated time, cleaning the air while you're away..
  • Four Working Modes: Built-in HI mode, MID mode, LO mode, and AUTO mode (Automatic sensor sensing air quality, automatic identification of switching gears)..
  • Easy to Use: Built-in IF remote controller and filter replace reminder function. Easily hang it from the ceiling with hooks and chains. Easy to carry with flip-up handle..
  • Tool Warranty: 3-year limited warranty, 1-year free service, and 90 days money-back guarantee..
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WEMARS Gas Chainsaw 62cc 20 Inch Power Chain Saws Handed Petrol Chainsaws Gasoline 2 Stroke Chain Saw Garden Tool for Cutting Wood Outdoor Home Farm Use

  • ...MARS 62cc 20 inch powerful gas chainsaw with guide bar and chain for cutting wood that need a longer bars. 2 stroke motors with integrated chain brake for safety and stable while operating. Low kickback safety function and excellent electronic ignition system can reduce the risk during operation.
  • Tension Adjustment: Automatic chain lubricator adjustable chain oil feed and quick and easy chain tension adjustment. The rugged 20 inch steel chain saw knob-type automatic tightening function is a side-adjustable chain that is easy to operate and maintain while delivering the highest cutting performance.
  • Reasonable Design: The combination of ergonomic front and back anti-vibration handles, cushioned wrap handles and balanced design make the gasoline chain saw easy to use and comfortable to operate. Chainsaws suitable conquer tree felling, wood cutting for lumberjacks in the forest or other use.
  • System Functions: WEMARS 20" bar gasoline powered chain saw is equipped with a filter system to ensure a long air filter life. The automatic lubrication system reduces the risk of wear and damage of the starter mechanism and prolongs using life. Effortless pull starting system, start faster, higher reliability.
  • Air Filter: The quick-release air filter facilitates easy cl....
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