Adapter with a voltage regulator 3.3V for NRF24L01

Step-Up/Step-Down DC-DC converter module that converts an input voltage from 3 V to 16 V to a voltage in the range of 2.5 V to 9 V. It has a current capability of up to 2 A. SparkFun COM-15208

Power filter board dedicated to Raspberry Pi minicomputers and DAC audio modules. It integrates various types of capacitors and allows you to remove power noise. DFRobot DFR0940.

Step-Down converter D36V28F12 with an output voltage of 12 V, an input voltage from 12.9 to 50 V and a maximum output current of 3.3 A. Pololu 3786

The Step-Up NCP1402 Buck Voltage Regulator module with output  voltage 3.3V, input voltage range of 0.8-3.3V and a maximum output current of 200 mA. Pololu 2114

Step Down converter module with an output voltage from 5 to 12 V and a maximum load of 3.4 A. The board is equipped with two USB connectors and has a built-in fast charging function for smartphones

Step-down DC-DC converter module that converts a 12 V or 11.1 V output voltage (e.g. from a lithium battery) to a voltage in the range of 1.8 V to 5.1 V. It has a power output of up to 60 W, and with an output current of up to 18 A, the module can be used to power a 5 m WS2812 RGB LED strip. DFRobot DFR1025

Voltage converter module with a symmetrical output of ± 18 V with a maximum power of 150 W. Used, among others, to power audio amplifiers

The 6V 10W USB Step-Up Converter Module converts 4.2-5.2V input voltage to 6V DC output voltage, with a maximum current of 2A and a conversion efficiency of 96%. The device can operate in a wide temperature range, from -40°C to 85°C, which makes it ideal for powering various electronic devices in harsh environments.

The Step-Up converter module with a power of 65W converts the voltage in the range of 3-35V to 3.5-35V with an efficiency of over 96%. Equipped with a voltmeter, it operates in temperatures from -40°C to 85°C.

BMS protection module designed for 13 Li-Ion cells. It has a charging function with balancer option and an over-discharge protection function. Dedicated to an electric bicycle or scooter

The power module is designed for the MyoWare 2.0 muscle tension sensor. Equipped with a LiPo battery, it allows you to build portable devices. SparkFun DEV-18427

Step-Up DC-DC converter module. It has an input voltage of 1.3 to 16 V, an output voltage of 7.5 V and a maximum input of up to 2 A. Pololu 4943

This step-down converter module allows you to reduce the voltage from 5-60V to a stable 5V at a current of up to 11A. Its high efficiency of up to 95% and low power losses make it ideal for applications requiring high current and stable power. The device features built-in overcurrent, thermal, and reverse connection protection, as well as a soft-start function and a Power Good indication. Pololu 5671

Pololu Adjustable 4-12V Step-Up Voltage Regulator U3V50ALV

An efficient step-down converter that steps down the input voltage from as low as 45 V to a regulated output voltage range of 1.4 to 7 V, offering high efficiency and a maximum continuous current of 3.4 A. It has built-in reverse polarity, overload and short circuit protection, and the spread spectrum function reduces EMI interference. Pololu 4873

The Step-Down converter module converts the input voltage of 5.3 - 26 V to a constant 3.3 V, with a maximum output current of 3 A, recommended up to 1.8 A for long-term operation. The conversion efficiency of the device is 96% and the module size is 22.3 x 17 x 4.2 mm