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VLF

frequency operates at 3–30 kHz. AKA: Very Low Frequency

See Also: Low Frequency, ELF


Showing results: 76 - 90 of 98 items found.

  • Programmable AC Power Source

    6400 - Chroma Systems Solutions, Inc.

    The Chroma 6400 series Programmable AC Power Source uses state of the art PWM technology to deliver pure, instrument grade AC power at a very low cost never achieved before. The 6400 AC power source offers maximum rated power for any output voltage from 0 to 300VAC, at any frequency from 45 to 1K Hz. It is not only suitable for commercial applications (47-63Hz), but also for avionics, marine, military applications at 400Hz.

  • Audio Oscillators

    C&C Instruments Co.

    Frequency Range : 10Hz to 1MHz in 5 Decade Steps Very Low Distortion : <0.5% Output Voltage : 22.6Vp-p Open Circuit Sine Wave and Squre Wave Easily Choice Built-in 4 Digits Frequency Counter with Internal/External Varialble Frequency with Poly Varicon 400Hz and 1kHz Fixed Special Function Compact Design and easy Operation 2. Accessories Spare Fuse : 1EA Operator''s Manual : 1EA Power Cord : 1EA BNC Cable : 1EA

  • Ferrite Devices

    Ducommun Inc

    Ducommun's products include very broad ferrite device selections to cover 100 MHz to 110 GHz operation frequency range. These devices include narrow band drop-in (FID and FCD), connectorized (FIC and FCC), junction (FIW and FCW) isolators and circulators and iso-adapters (FII and FCI). The broad bandwidth versions are offered as full band junction isolators and circulators (FIF and FCF) and Faraday isolators (FFF). These devices feature low insertion loss, high isolation and wide operating temperature range. Low cost and volume production versions of these ferrite devices are available per customers’ request.

  • 60kw off grid power inverter 110/220V split-phase output converter

    SDP-60KW - Zhejiang Sandi Electric Co., Ltd

    Our SDP series Off Grid Pure sine wave inverter is one of the most advanced DC to AC conversion products in the world, it is suitable use for areas without electricity, vehicles, ships, solar energy, wind turbine and other renewable energy systems and etc, can supply power and provide guarantee effectively for the areas with traffic inconveniences, in the mountains, pastoral, border, island and other areas without electricity. It has the main advantages of high quality sine wave AC output, microcomputer control, humanness design, and it is high efficiency and low no-load loss, and no pollution. The inverter can also supply AC power to all kinds of electric equipment, air conditioners, motors, refrigerators, lights, TV, electric fans and other industrial power supply.1. Using the sixth generation efficient IPM intelligent module from Japanese Mitsubishi, high efficiency and stable performance. It with powerful protection function, the protection for short circuit, over load, over temperature is more safe and reliable. It’s service life can up to 15 years or more.2. Intelligentized, modularized, simple structure design with powerful function.3. Two kinds of start mode: Step-down Voltage Start and Variable Frequency Start. Customers can set start mode according to the type of their load. This function is very convenient for users and also reduce frequency converter’s usage, which reduced the cost of equipment investment, easy to connect wires and control.4. The output frequency can be setting via LCD panel, it’s very convenient for customer.5. The output voltage can be set between -40 % to +20 % of rated voltage. And the output voltage is very accuracy ±1%.6. The DC input voltage range can be set. Over-voltage point, under-voltage point, over-voltage recovery point, under-voltage recovery point all can be setting via the LCD panel.7. Pure sine wave output. With good dynamic response less than 50MS, waveform distortion rate smaller, higher conversion efficiency and stable output voltage.8. Low Frequency Transformer, which ensures that inverter has high efficiency.9. High conversion efficiency, Max. Efficiency≥94%,if 48VDC input,the efficiency can more than 85%.10. Adopts black pure aluminum radiator, which confirms the best radiating performance.11. Powerful data display function. LCD can display the DC input voltage, output frequency, phase voltage, phase current, AC bypass input voltage, output power KWH, time and date, temperature, fault code display.12. Wide input voltage can be set according to customer’s requirement. Input voltage range can be selected from 150-400V or 300-600V or 400-800V.13. Wide input voltage can work without battery and solar charge controller,save more cost and With MPPT wide voltage input function, maximum use of solar power

  • Digital RCD Tester

    1112 EL - Standard Electric Works Co., Ltd

    ● Microprocessor-controlled.● Very low consumption.● 50Hz and 60Hz operation.● Accurate digital readout of disconnection time.● Over temperature protection.● Over voltage protection.● Fuse protection.● Zero crossing circuitry permit testing at 0° or 180°.● Auto power off. ● Backlight function. ● Wiring polarity indicator.● Measure voltage between Line and Earth before testing.● Frequency measurement indication.

  • Digital RCD Tester

    1612 EL - Standard Electric Works Co., Ltd

    ●Microprocessor-controlled●Extra large LCD (78 × 67mm)●Very low power consumption●50Hz and 60Hz operation●Accurate digital readout of disconnection time●Over temperature protection●Over voltage protection●Fuse protection●Zero crossing circuitry permits testing at 0° or 180°●Auto power off●Backlight function●Wiring polarity indicator●Measures voltage between Line and Earth before testing●Frequency measurement indication

  • Digital RCD Tester

    1113 EL - Standard Electric Works Co., Ltd

    ● Microprocessor-controlled.● Very low consumption.● 50Hz and 60Hz operation.● Accurate digital readout of disconnection time.● Over temperature protection.● Over voltage protection.● Fuse protection.● Zero crossing circuitry permit testing at 0° or 180°.● Auto power off. ● Backlight function. ● Wiring polarity indicator.● Measure voltage between Line and Earth before testing.● Frequency measurement indication.

  • Digital RCD Tester

    8012 EL - Standard Electric Works Co., Ltd

    ● Microprocessor-controlled.● Extra large LCD(78 × 67mm).● Very low consumption.● 50Hz and 60Hz operation.● Menu-driven.● Accurate digital readout of disconnection time.● Over temperature protection.● Over voltage protection.● Fuse protection.● Zero crossing circuitry permit testing at 0° or 180°.● Auto power off.● Auto off and off override.● Wiring polarity indicator.● Measure voltage between Line and Earth before testing.●Frequency measurement indication.

  • Digital RCD/RCCB/GFC/ELCB Tester

    4112 EL - Standard Electric Works Co., Ltd

    ● Microprocessor-controlled.● 2 Lines × 16 Characters LCD.● Very low consumption.● Menu-driven.● Accurate digital readout of disconnection time.● Automatic data hold function.● Zero Crossing Circuitry permit testing at 0° or 180°.● Disconnection Phase Polarity Shown on LCD.● Auto off and off override.● Polarity Trip indicator (Positive or Negative Phase).● Wiring polarity indicator.● Measure voltage between line and earth before testing.● Indicates frequency of voltage L-E.

  • Digital ELCB (RCD) Tester

    2712 EL - Standard Electric Works Co., Ltd

    ● Microprocessor-controlled.● 2 Lines × 16 characters LCD.● Very low consumption.● 50Hz and 60Hz operation.● Menu-driven.● Accurate digital readout of disconnection time.● Automatic data hold function.● Over temperature protection.● Over voltage protection.● Fuse protection.● Zero crossing circuitry permit testing at 0° or 180°.● Disconnection phase polarity shown on LCD display.● Auto off and off override.● Polarity trip indicator (positive or negative phase)● Wiring polarity indicator.● Measure voltage between Line and Earth before testing.● Frequency measurement indication.

  • Digital ELCB (RCD) Tester

    1812 EL - Standard Electric Works Co., Ltd

    ● Microprocessor-controlled.● 2Lines × 16 Characters LCD.● Very low consumption.● Menu-driven.● Accurate digital readout of disconnection time.● Automatic data hold function.● Zero Crossing Circuitry permit testing at 0° or 180°.● Disconnection Phase Polarity shown on LCD display.● Auto-off and off override.● Polarity Trip indicator (Positive of Negative Phase).● Wiring polarity indicator.● Measure voltage and frequency between Line and Earth before testing.

  • Audio Signal Generator

    CRY5520 - CRYSOUND

    CRY5520 Audio signal generator uses SCM for sweep control and the digital-analog mode and performs stably. With very low distortion, sine wave output, good stability, and frequency range for the entire audio frequency domain, it is especially suitable for the pure tone test of speakers and headphones. It can work in both logarithmic sweep and manual frequency modulation modes. The sweep start point, end point and sweep time can be set randomly. Manual frequency modulation is divided into rough modulation and fine modulation, which can quickly and accurately modulate frequency. It adopts 128 × 64 dot matrix LCD and simultaneously displays frequency and voltage values with synchronous output.

  • handheld digital spectrum analyzer

    2.4G - Seeed Technology Inc.

    RF Explorer is a handheld digital spectrum analyzer, aimed to provide a very affordable tool for work in all ISM popular frequency bands. It is based on a highly integrated frequency synthesizer which offers high performance, compact size, low consumption and low cost. It has been designed to be used outdoor and indoor, and works nice with a PC connected for extra functionality using standard mini-USB 2.0 connector.

  • handheld digital spectrum analyzer

    433M - Seeed Technology Inc.

    RF Explorer is a handheld digital spectrum analyzer, aimed to provide a very affordable tool for work in all ISM popular frequency bands. It is based on a highly integrated frequency synthesizer which offers high performance, compact size, low consumption and low-cost. It has been designed to be used equally well outdoor and indoor, and can be connected to a Windows PC using standard mini-USB for additional features and higher display resolution.

  • handheld digital spectrum analyzer

    868M - Seeed Technology Inc.

    RF Explorer is a handheld digital spectrum analyzer, aimed to provide a very affordable tool for work in all ISM popular frequency bands. It is based on a highly integrated frequency synthesizer which offers high performance, compact size, low consumption and low cost. It has been designed to be used outdoor and indoor, and works nice with a PC connected for extra functionality using standard mini-USB 2.0 connector.

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