Schumann Resonance Generator 7.83Hz – and 50 similar items

Schumann Resonance Generator 7.83Hz ? Programmable 0.1Hz?100KHz PCB Antenna Schumann Resonance Generator 7.83Hz ? Programmable Frequency PCB with Large On-Board Antenna Multi-Waveform Ultra-Low Frequency Generator | 0.1Hz to 100KHz Adjustable | USB Powered PCB with On-Board Spiral Antenna | Default: 7.83Hz | Supply: DC 5V via USB | Board: approx. 15 14cm This is a Schumann multi-state adjustable frequency generator built around a large on-board PCB spiral antenna ? a single integrated unit combining the signal generator circuit and a large-format planar coil antenna on one green PCB measuring approximately 15 14cm. The unit is identified on the board itself as a Schumann Multi-State Adjustable Frequency Generator and defaults to the Earth's well-known Schumann resonance frequency of 7.83Hz at power-on. Frequency is fully programmable from 0.1Hz to 100,000Hz using the onboard numeric keypad ? simply key in the desired frequency and press OK to confirm. For example, pressing [7][.][8][3] then [OK] sets the output to 7.83Hz. A 16-character LCD display shows the current frequency setting, with a backlight switch to toggle display illumination. Waveform selection is flexible: the antenna outputs a sine wave signal, while the lower-left signal test interface simultaneously provides three selectable outputs ? sine wave, square wave, and inverted (reverse) square wave ? all available at the same time via the terminal block. The generator uses a digital crystal oscillator frequency reference for stable output with strong anti-interference characteristics. Power is supplied via a standard DC 5.5 2.1mm barrel jack at 5V (rated under 1W), and the included USB cable allows the unit to run from any USB power bank, USB wall charger, or USB port ? no dedicated power supply required. Sinusoidal signal voltage amplitude is 3V; square wave amplitude is 5V. Board dimensions with shell are approximately 15.5 14.5 2.8cm. What's Included: Schumann frequency generator PCB with large on-board spiral antenna USB power cable (USB-A to DC barrel connector) Printed instruction/specification sheet (English) Original cardboard box packaging Technical Specifications: Default Frequency: 7.83Hz (Schumann resonance) Adjustment Range: 0.1Hz ? 100,000Hz (100KHz) Antenna Waveform: Sine wave Interface Waveforms: Sine wave + square wave + inverted square wave (simultaneous output) Supply Voltage: DC 5V (via DC 5.5 2.1mm jack or USB adapter) Rated Power: Under 1W Sine Output Amplitude: 3V Square Wave Amplitude: 5V Display: 16-character LCD with backlight switch Board Size: approx. 15 14cm Dimensions with Shell: approx. 15.5 14.5 2.8cm Who Uses Schumann Resonance Generators: The Schumann resonance at 7.83Hz is the fundamental electromagnetic frequency of Earth's cavity between the surface and the ionosphere, first described by physicist Winfried Otto Schumann in 1952. Generators like this one are purchased by a range of buyers: electronics hobbyists and makers interested in ultra-low frequency (ULF) signal generation and PCB antenna design; audiophiles and home theater enthusiasts who use them as environmental resonance devices; researchers and students exploring ELF/ULF electromagnetics; and wellness-oriented buyers interested in sleep, meditation, and relaxation applications. The programmable frequency range ? extending from 0.1Hz all the way to 100KHz ? also makes this a functional general-purpose ultra-low frequency signal generator well beyond its 7.83Hz default. Powered by SixBit's eCommerce Solution