Adapter with a voltage regulator 3.3V for NRF24L01

DC-DC Step-Up/Step-Down Converter Module. It has an input voltage of 1.4 to 16 V, an output voltage of 3.3 V and a maximum output current of 1 A to 1.5 A. Pololu 4964

Step-Down converter module with 3.4 V to 5.5 V input voltage, 3.3 V output voltage and 2 A output current. It is compatible with the popular LM1117-3.3V device in TO-220 package. Adafruit 4920

The Step-Down 4A 3.3V/5.2V converter module is a compact device with a large input voltage range, enabling precise conversion to 3.3V or 5.2V output with low static power consumption and low output noise. Perfect for powering electronic projects and microcontroller circuits, offering stability and performance.

This regulated DC-DC buck switching power supply supports an input voltage of 6 to 70V and an output voltage of 0 to 60V at a current rating of up to 15A (20A peak). It features high-precision voltage and current displays and quick-select switches for standard voltages. The module features an intelligent cooling system and numerous safety features, making it a safe and reliable solution for precision powering electronics, battery testers, LED systems, and industrial applications. XY6015L

This regulated DC-DC buck switching power supply supports an input voltage of 6 to 70 V and an output voltage of 0 to 60 V at up to 20 A. It features high-precision voltage and current displays and quick-select switches for standard voltages. The module features an intelligent cooling system and numerous safety features, making it a safe and reliable solution for precision powering electronics, battery testers, LED systems, and industrial applications. XY6020L

Module with the HUSB238 chip, which allows for flexible configuration of the voltage and current supplied through the USB PD port. It allows both manual setting of parameters using jumpers and dynamic control via the I2C bus. Equipped with a USB Type C connector. Adafruit 5807

DC-DC Step-Down converter module. It has an input voltage from 12 to 45 V, an output voltage of 12 V and a maximum output current of up to 2.8 A. Pololu 4896

DC-DC Step-Down converter module. It has an input voltage from 15 to 45 V, an output voltage of 15 V and a maximum output current of up to 2.7 A. Pololu 4897

DC-DC Step-Down converter module. It has an input voltage from 3.3 to 45 V, an output voltage of 3.3 V and a maximum output current of up to 3.7 A. Pololu 4891

DC-DC Step-Down converter module. It has an input voltage from 5 to 45 V, an output voltage of 5 V and a maximum output current of up to 3.4 A. Pololu 4892

DC-DC Step-Down converter module. It has an input voltage from 6 to 45 V, an output voltage of 6 V and a maximum output current of up to 3.3 A. Pololu 4893

DC-DC Step-Down converter module. It has an input voltage from 7.5 to 45 V, an output voltage of 7.5 V and a maximum output current of up to 3 A. Pololu 4894

DC-DC Step-Down converter module. It has an input voltage from 9 to 45 V, an output voltage of 9 V and a maximum output current of up to 2.9 A. Pololu 4895

Uninterruptible power supply (UPS) module, allowing continued operation and safe shutdown of the device after a power failure. AC adapter included. Waveshare UPS Module 3S (EU)

Step-Down converter with adjustable output voltage from 4.2 V to 15 V and output voltage up to 45 V. It is equipped with reverse voltage protection, input undervoltage lockout, overload and short circuit protection. Pololu 4875

Step-Down converter with adjustable output voltage from 4.2 V to 15 V and output voltage up to 45 V. It is equipped with reverse voltage protection, input undervoltage lockout, overload and short circuit protection. Pololu 4874