All-in-one Lipo PS for vacuum tube experiment

Name: All-in-one Lipo PS for vacuum tube experiment
SKU: 17153
Price: 16.00 USD
Availability: Discontinued

All-in-one Lipo driven power supply for vacuum tube experiment

Designed by microwavemont in Japan

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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All-in-one Lipo PS for vacuum tube experiment 1

All-in-one Lipo PS for vacuum tube experiment 2

All-in-one Lipo PS for vacuum tube experiment 3

All-in-one Lipo PS for vacuum tube experiment 4

All-in-one Lipo PS for vacuum tube experiment 5

All-in-one Lipo PS for vacuum tube experiment 6

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

All-in-one Lipo driven power supply for vacuum tube experiment

What is it? All-in-one Lipo driven power supply for vacuum tube experiment, consisting of Lipo charger, 1.8 V voltage regulator, 3.3 V voltage regulator for heater voltage, and 30 V voltage booster f…

What is it?

All-in-one Lipo driven power supply for vacuum tube experiment, consisting of Lipo charger, 1.8 V voltage regulator, 3.3 V voltage regulator for heater voltage, and 30 V voltage booster for plate voltage of vacuum tube. Everything is driven by Lipo!

Why did you make it?

Recently I am enjoying "ancient" vacuum tube device. Of course I've known it but I have not tried due to "special voltage requirement". Heater voltage from 1.5V or 3V for battery tube is easy to generate (simply by LDO) but plate voltage should be high around 30 V. More than 30 years ago, high voltage battery for this voltage (B-battery) was available but already completely disappeared. One way to generate high voltage can be some special 12V battery, series connected button battery, but they are expensive and easy to use up. For this purpose, I've used "uncompleted PCB for Nutube amplifier" which can generate high voltage but it is not smart at all. This time I designed new PCB and circuit especially for this purpose.

What makes it special?

29 V output generated by on-board booster, suitable for plate voltage supply
1.8 V and 3.3 V out for heater voltage. Naturally the experiment will be limited to 1.5V or 3V heater tube.
Just connecting USB cable is enough to recharge your battery!
Onboard Power LED and charging state LEDs (green:full, red:charging)
All of the parts except for Lipo battery are included. (unconnected, sole cell) Lipo battery is prohibited by international parcel regulation. This board has USB connector but USB bus power is NOT supported, and Lipo battery is indispensable!! Please find it at your local reseller. Any capacity more than 400mAh will be enough.
It is important and I would say again, Lipo battery cell (3.7V) is required to operate this board. The cell is not USB power bank but cell itself. Please find it at your local reseller. Any capacity more than 400mAh will be enough.

It may be a kind of common sense, but please check short circuit (Especially between plate (B-voltage) to ground) before switch-on. Long time short circuit for 29V output may destroy on-board voltage booster!