Single board 1.8V 3.3V and 30V power supply operating by Lipo (or 3-cell NiMH)Designed by microwavemont in Japan
Notice Apr.24: Due to the current international shipping delay, now only the domestic order is accepted. I will recover it ASAP shipping status recover.
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 rechargi...Read More…
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.
You can still find lots of vacuum tubes on the market. The vacuum tube requires two kinds of voltage, heater and plate voltage called B-voltage. Battery tube and sub-miniature tube has relatively low heater voltage with low current flow and it can be supported even by AAA battery, but the headache is B voltage. At least 30V is required for most for good operation (such as amplifier, radio,,,,) but we need bunch of batteries, connected 20 cells (1.5 x 20 V). This board will completely solve this issue. Just connect Lipo, or 3-cell NiMH battery pack to this board, this board generates 1.8 V, 3.3 V for heater voltage and 30V for plate voltage!
Fully soldered (completed) single board power supply with on-board voltage regulators and booster generates 1.8V, 3.3V for heater, and 30 V for plate voltage.
On-board Lipo battery charger can be activated just connect USB cable. Charging/Full state is indicated by Red/Green LED. Not only Lipo battery, 3-cell NiMH (3.6V) operation and recharging is supported.
30V is suitable for battery tube or subminiature tube experiment.
This listing is for the board board only. No battery is included. This board requires Lipo battery cell or 3-cell NiMH battery pack. USB bus power is not supported (USB bus power is for battery recharging.)
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Carlton | April 12, 2020
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