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Handy vacuum tube power supply

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Single board 1.8V 3.3V and 30V power supply operating by Lipo (or 3-cell NiMH)

Designed by microwavemont in Japan
Tindie the Retiree

Product Retired

This product is no longer available for sale.

The seller may be offering an improved version or it may be hanging out on the beach, enjoying the retired life.

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On Dec. 15, 2025, my tindie store "micowavemont" trying restarting! Stay tuned!

Single board 1.8V 3.3V and 30V power supply operating by Lipo (or 3-cell NiMH)

What is it? This is the re-production item of my previous item This board generates 3.3 V, 1.8 V, and 30 V from Lipo (3.7 V) battery. The on-board Lipo battery charger enables Lipo battery recharging…

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