1N4007 Bridge Rectifier AC to DC Power Converter Full-Wave Rectifier Circuit Board Electronic Kit YH-133

$0.77

Mobile Phone USB Charger Kit 5V Switching Regulated Power Supply DIY Soldering Practice Discrete Parts WK-56-1

$2.78

20W Power Bank Case 1-Cell 21700 Battery Box DIY Kit Fast Charging Dual Mode Supports Low Current

$11.80

LM317 Adjustable Voltage Regulator Power Supply Kit with Output Protection, DIY Soldering Practice Module YH-317

$6.60

LM317 Adjustable Voltage Regulator Power Supply Continuously Adjustable DC Circuit Experiment Electronic DIY Making Kit YH-268

$0.89

Adjustable Switching Power Supply Circuit Kit for Electronic DIY Soldering, Teaching, and Training Board Assembly

$39.30

New LM317 Adjustable Voltage Regulator Kit Electronic DIY DC Power Supply Making Parts Multifunctional Soldering Training

$18.50

FM Tuning Radio Kit Digital Display Electronic DIY Discrete Parts Manual Soldering Type-C Power Jack Microcontroller

$26.00

Wulu Electronics High-Power LM317 Adjustable Voltage Regulator Power Supply Kit 12W DIY Soldering Practice Assembly

$7.66

D880 Transistor Series Adjustable Regulated Power Supply 3-10V DC Electronics DIY Kit ZYKJ-329

$4.68

MB-102 Breadboard Wire Kit High-Quality Prototype Board for Circuit Experiments 400/830 Holes Solderless DIY Combo

$3.52

Blood Pressure, Heart Rate, SpO2, and Pulse Wave Wristband Physiological Monitoring Module with 51 MCU/STM32 for Arduino

$7.00