Adjustable AC Power Supply

What's the point of these power supply modules?...

Amazon.com: Power Supply Modules, TPS5430 12V 1...

AC-DC Power Supply Module 12V 6A Switching Powe...

XL4015 step down power supply module Constant c...

Linear Power supply Module Double DC LT1083 24V...

0-32.00V/0-5.000A Digital Power Supply Module P...

Power Supply Module, 300W 20A Voltage Module, V...

Dual Linear Power Supply Module LT3045 LT3094 +...

MB102 Breadboard Power Supply Module Mini USB 3...

12V2A (24W) Switching Power Supply Module AC 22...

AC DC Isolated Power Supply Module IoT 5VDC 3W

Power Supply Module DC 9V~36V to 5.2V 5A Double...

Breadboard Power Supply Module 3.3V 5V MB102 Sw...

Digital DC-DC Adjustable Power Supply Module Pr...

LHY AUDIO Dual Linear Power Supply Module LT304...

[READY STOCK] 36V 180W 50/60HZ AC-DC Switching ...

Linear Power supply Module regulated DC +/- LM3...

Switching Power Supply Module 700W +/-60V - Aud...

Noyito Ac To Dc Isolated Power Supply Module Ac...

Breadboard Power Supply Module 12v

Single Output 220VAC to 12V Power Supply with B...

Power Supply Module

24V 1A 24W ISOLATED SWITCH POWER SUPPLY MODULE ...

AC-DC Power Supply Module – Drok.Blog

LM 2596 Multi Channel Switching Power Supply Mo...

Switching Power Supply Module 700W +/-30V - Aud...

900W Power Supply Module DC 8~60V to 10~120V 15...

Buy NOYITO AC to DC Precision Buck Power Supply...

SMPS500QRV2 500W / +/- 35V Switching Power Supp...

Switching-Power-Supply-Module-AC100-240V-AC-DC-...

LHY AUDIO Linear Power Supply Module LT3042 5V ...

Power Supply Module 15VA +/-17V DC Non regulate...

Low Voltage AC‑DC Buck Power Supply Module DC‑D...

Power Supply Module-150W 6A~9A AC-DC High Effic...

Regulated Linear Power Supply Module 3x LT3045 ...