is the output DC or pulsed DC? i.e. a single polarity?

The output is fairly clean DC. It has a few mV of noise which is load dependent. In my case I am using this in a supply for a measuring microphone. The mic needs super clean 120V at a couple mA, and super clean 200 V at no current. To clean the output up I used a Sziklai pair capacitance multiplier to get the noise down into the uV range plus an RC filter for the polarizing voltage.

Schematic of this product.

I was not able to find a schematic for the power supply circuit. Would have to reverse engineer the board to get the circuit.

What is required for it to work?

A 12 volt DC 1A wall wart powers this just fine.

Exactly what type of transformer is needed for the high voltage dc-dc boost power supply converter module?

All you need as a "wall wart" that plugs into the AC wall socket and delivers 12 volts DC. Cut and remove the coax plug from the wall wart's cord. Check polarity and connect the + lead with to red and - to black. A wall wart rated at 1 amp is enough as long as your HV load does not draw more than about 30mA. By the way, 30mA is about the limit for what this board can do before the inductor's core saturates and the efficiency goes way down resulting in overheating.

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High Voltage DC-DC Boost Power Supply Converter Module, Green

Product ID: 368484753

Details

Brand
QINIZX
Color
Green
Input Voltage
12 volts
Item Weight
27.22 g
Item dimensions L x W x H
1.96 x 1.02 x

⚡Up to 380V output voltage

📏Compact 5x2.6x1.7cm size

🔋Input 9-12V DC, adjustable output

HK$147

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Description

⚡ Elevate your vintage vibes with high-voltage precision power!

COMPACT YET MIGHTY - Small footprint (just under 2 inches) fits effortlessly into any retro or modern DIY setup without clutter.
PLUG PLAY CONVENIENCE - Includes cables for quick installation, so you can get your vintage electronics glowing faster than ever.
POWER YOUR VINTAGE TECH - Seamlessly boost 9-12V input to a high-voltage 80-380V output, perfect for Nixie tubes and magic eye indicators.
PRECISION VOLTAGE CONTROL - Adjust output voltage with ease to match your project’s exact needs, ensuring optimal performance every time.
EFFICIENT LOW CURRENT BOOST - Delivers up to 25mA at 170V with 65% efficiency—ideal for delicate vacuum tube displays and audio level indicators.

This High Voltage DC-DC Boost Power Supply Converter Module transforms a 9-12V DC input into a finely adjustable 80-380V output, tailored for vintage vacuum tubes and Nixie tube projects. Compact and efficient, it supports low current applications with up to 25mA output current and 65% efficiency, making it the modern, cost-effective alternative to bulky transformers.

Specifications

ASIN	B09D93QNYK
Best Sellers Rank	#52,156 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #36 in Lab Power Supplies #63 in Life Science Supplies
Brand	QINIZX
Color	Green
Customer Reviews	4.3 4.3 out of 5 stars (71)
Input Voltage	12 volts
Item Dimensions	1.96 x 1.02 x 0.67 inches
Item Highlight	For Vintage Vacuum Nixie Tube, Magic Eye 6E2 Level Indicator, 9V-12VDC Input, 80V-380VDC Output
Item Weight	27.22 g
Manufacturer	QINIZX
Mfr Part Number	NIXIE-HV380V
Model Number	NIXIE-HV380V
Number of Items	1
Number of Packs	1
Power Source	Corded Electric
UPC	780861369910
Unit Count	1 Count
Warranty Description	90 Day Manufacturer

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HK$147

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hong Kong.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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