where do you put a dc 5v.1a battery for power supply?

it is a step-down regulator. for example, put a dc 6-24v battery input, it will output 5v.

What is the frequency and magnitude of the ripple on the output?

In practical use, it's been working perfectly on my quad for operating the flight controller. For your question, I tried using my 150 DSO shell kit to get a reading. I was unable to measure the freq/mag of the ripple. It looked rather clean, with just the slightest random notch on the plot. Vmax: 5.19 Vmin: 5.03 Vave: 5.11. It could not lock on to any kind of a ripple. Could be beyond the limits of my DSO, or operator error.

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⚡ Tiny Tech, Big Power – Stay Ahead of the Voltage Curve!

PLUG PLAY CONVENIENCE - Lightweight and ready to integrate without the hassle of additional batteries or bulky components.
POCKET SIZED POWERHOUSE - At just 17mm by 5.5mm, this module fits effortlessly into any compact project or device.
OPTIMIZED FOR BATTERY PACKS - Designed specifically for 2-6S battery configurations, ensuring smooth voltage regulation.
POWER YOUR MINI TECH SEAMLESSLY - Step down from 6-24V to a reliable 5V output, perfect for transmitters, receivers, and mini cameras.
BULK PACK FOR PRO LEVEL PROJECTS - Includes 4 modules, so you’re always equipped for multiple builds or backups.

The Wolfwhoop PW-D Control Buck Converter is a compact, efficient step-down voltage regulator that converts 6-24V input to a stable 5V output at 1.5A. Its ultra-small footprint (17mm x 5.5mm) makes it ideal for powering mini cameras, transmitters, and receivers, especially in 2-6S battery setups. Sold in packs of four, it’s perfect for professionals and hobbyists seeking reliable, space-saving power solutions.

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Item weight	0.32 Ounces
Manufacturer	Wolfwhoop
Part number	PW-D
Item Weight	8.97 g
Package Dimensions	11.3 x 7.8 x 0.71 cm; 8.99 g
Item model number	5824093032
Color	green black
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No

Wolfwhoop PW-D Control Buck Converter 6-24V to 5V 1.5A Step-Down Regulator Module Power Inverter Volt Stabilizer

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