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Small green circuit board with mini USB port and short cable, 8 by 5.3 cm

Ruth's sister

Ruth's sister Pulse Generator Board USB Rechargeable 7.83Hz

SKU CH-8J48-QJ9R6

A compact 7.83 Hz Schumann wave generator board measuring 8 × 5.3 × 0.6 cm, USB-rechargeable at 5 V 0.1 A for DIY audio and sleep improvement

  • Improve sleep quality with 7.83Hz Schumann wave
  • Enhance sound perception via ultra-low frequency pulse
  • Compact 8cm x 5.3cm board fits DIY projects
  • USB rechargeable at 5V 0.1A for portable use
  • Includes 30cm Mini USB cable for easy power

Pulse Generator Board 7.83 Hz

This USB-rechargeable pulse generator board produces a 7.83 Hz Schumann wave signal from a compact PCB module. It is intended for hobbyists and DIY experimenters who want a portable ultra-low-frequency source for personal wellness or audio experimentation. The board measures 8 cm by 5.3 cm by 0.6 cm and includes a 30 cm Mini USB cable for power.

Upgrade From Battery Modules

The rechargeable design replaces disposable-battery pulse generators that require frequent cell changes. The jump is worth it when you need a stable 5 V 0.1 A supply from any USB port and want to avoid the cost and waste of single-use batteries during extended sessions. Mini USB connectivity lets you power the board from power banks, chargers or a computer.

Capacity And Headroom

The fixed 7.83 Hz output suits sleep-quality and sound-perception experiments where a single ultra-low frequency is sufficient. Headroom ends at that single frequency; the board cannot generate adjustable or multiple waveforms, higher frequencies or programmable patterns. Users who need variable frequency, waveform shaping or higher output voltage will need a more advanced function generator.

How it compares

Measured against everything we stock in Worldwide Power Cords, at today’s prices. Recalculated every night.

Price $8.99
Cheaper than about 60% of the 1,208 comparable items (median $9.99).

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Specifications

No published specifications for this item yet.

Questions about this item

What are the exact board dimensions for enclosure planning?

The board measures 8cm x 5.3cm x 0.6cm, which is approximately 3.15" x 2.09" x 0.24", so allow that footprint plus cable clearance.

How do I power it and which step is often missed?

Connect the supplied 30cm Mini USB cable to any 5V 0.1A USB source; the step people miss is ensuring the source actually delivers 0.1A, as some ports current-limit lower.

What part will need replacement first with daily use?

The Mini USB cable and connector see repeated flexing; the board itself has no moving parts, so the cable is the only wear item to keep a spare for.

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