10 Best Electronic Frequencies In The Us - Black Friday 2024
Best Choice1
WileyFrequency Selective Surfaces: Theory and Design
9.8Exceptional
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Value for Money2
WileyFrequency Synthesis by Phase Lock
9.5Excellent
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3
Springer21% OffHigh Frequency Measurements and Noise in Electronic Circuits
9.3Excellent
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4
NewnesPractical Radio Frequency Test and Measurement
Main highlights- Used Book in Good Condition
9.2Excellent
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5
Wiley18% OffNoise in Radio-Frequency Electronics and its Measurement (Wiley-ISTE Series)
9.0Excellent
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6
Great AteamInverter Refrigerator Testing Instrument Tester Compressor Inverter Board Pulse Solenoid Valve Fault Repair Test Tool Universal
Main highlights- - The main board to inverter board output signal detection - 2K/5K/10K temperature probe detection
- - The main board detects the output of solenoid valve - Current observation of fixed frequency compressor power supply - Two-wire frequency conversion board detection
- - The compressor cylinder clamping instrument will make three attempts to start, and if it fails to start, the buzzer will give an alarm.
- - Single/double damper detection - Damper heating wire power display - Three-wire fan detection - Four-wire fan detection
- - Range hood driven by three wire variable frequency motor
- - Inverter compressor testing - Single-wire frequency conversion board detection - Pulse solenoid valve detection
- - Electric valve stuck valve repair - Home air-conditioning electronic expansion valve drive detection
- - Compressor short circuit buzzer alarm, Other compressor fault buzzer alarm
- - Air-conditioner three wire fan frequency conversion motor drive
- - Adjustable frequency - Voltage display - Current display
8.7Very Good
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7
Haycone2024 Upgraded Version Ultrasonic Pest & Insect Repeller, Ultrasonic Repellent for Roach, Rodent, Mouse, Bugs, Mosquito, Mice, Spider, Ant,Electronic Plug in Pest Control,3 Mode Switching,6 Packs
Main highlights- Working principle Repeller:Ultrasonic insect repellents use ultrasound to stimulate the brain neurons of pests. Long term stimulation can cause damage to the neurons of pests, thereby achieving the goal of expelling pests
- Work progress process:The typical results can take 1-2 weeks depending on the severity of the pest infestation. Mostly can see the electronic pest repellent results within 3-4 weeks! Then we can say goodbye to pests and mice! Note: To keep the pest from coming back continued use is recommended
- Green Way To Repel Pests: Throw away harmful poisons, hazardous chemicals and traps commonly, which always used in households and control technicians. Ultrasound is inaudible to humans and household pets. It is an eco-friendly alternative to harmful and dangerous chemicals, poisons and traps, no unpleasant odors
- Functional upgrades in 2024. Intelligent frequency conversion with three different sound wave frequencies, covering a frequency range of 20KHZ-60KHZ, can more effectively deal with various types of pests and keep your family away from pest infestation
- Energy saving and money saving. Its power is only 3-5 W, even lower than the power of ordinary small desk lamps, without the need for batteries, plug in and use, truly achieving low energy consumption and high efficiency
8.4Good
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8
Cambridge University Press19% OffRadio Frequency Integrated Circuits and Systems
8.3Good
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9
CiataICN2P32N, 120-277V, 50-60Hz Input Frequency, Solid Wire Type, Instant Start Centium Electronic Fluorescent Ballast for 2 F32T8 Lamp Type, Indoor/Outdoor Use with Automatic Restart Ballast Box, 10 Pack
Main highlights- WIRING SPECIFICATIONS: Wiring specifications of the product constitute a Wire Gauge (Nom) of 18AWG mm and Solid Wire Type. The Electronic Ballast does not have both Color Input and Output Terminal along with Tandem Wiring and Through Wiring Configuration feature in the standard product. The Lamp connection of the ballast is of Parallel type and features a Wire Strip length of 0.50/0.375mm. The Remote Wiring Configuration feature is allowed in the Ballast which allows the ease of operation.
- PREMIUM QUALITY: The Ciata Instant Start Centium Electronic Fluorescent Ballast Housing Material is made of high-quality Metal that ensures lifetime durability and high quality for the product. The product meets strict high-quality requirements to be safe and reliable and is approved for Indoor/Outdoor location use. The Electronic Ballast is suitable for Outdoor area use.
- GENERAL INFO AND DIMENSIONS: Designed for 1/2 Piece/Unit T8 Fluorescent Lamp piece per unit, the Ciata Ballast features a T-Case Maximum Temperature (Nom) of 70°C. The Instant Start Centium Electronic Fluorescent Ball features a Sound Rating of A category. Housing dimensions of the Electronic Ballast constitute the following 9.5-inch x 1.3-inch x 1.0 inch and constitute a Lamp Rated Watts of 32 W respectively.
- FEATURES: With its reliable and long-lasting energy efficient performance, the Ciata ICN2P32N Instant Start Centium Electronic Fluorescent Ballast is a perfect choice as an Electronic Ballast that regulates the current to the lamps and provides sufficient voltage to start the lamps. Featuring a starting method of Instant Start and Automatic Restart facility, the Ballast will be a premium addition to any Fluorescent F32T8 Lamp type fixture.
- ELECTRICAL AND OPERATING DETAILS: Constituting an Input Voltage of 120 to 277 V and Input Frequency of 50 to 60 Hz, the Ciata Ballast has a Max THD of 10% and has got an Ignition Time (Nom) of 0.1s. Other specifications constitute the following – Lamp Current Crest Factor (Nom): 1.7, Ballast Factor (Nom): 0.89, Power Factor (Nom): 0.98, Input Power (Nom): 56-56W and with a Minimum Operating Input Current of 0.22 A and Maximum Operating Input Current of 0.49 A respectively.
8.2Good
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10
Wiley-IEEE PressDigital Control of High-Frequency Switched-Mode Power Converters (IEEE Press Series on Power and Energy Systems)
8.1Good
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