![Wholesale Max 3A 50W LM338K Step Down Buck Power Supply DIY Kit Digital Step-Down Module AC 1-25V DC 3-35V To 1.2-30v From m.alibaba.com Wholesale Max 3A 50W LM338K Step Down Buck Power Supply DIY Kit Digital Step-Down Module AC 1-25V DC 3-35V To 1.2-30v From m.alibaba.com](https://s.alicdn.com/@sc04/kf/H11284ed927374c448db37a892f2d562aT.jpg_720x720q50.jpg)
Wholesale Max 3A 50W LM338K Step Down Buck Power Supply DIY Kit Digital Step-Down Module AC 1-25V DC 3-35V To 1.2-30v From m.alibaba.com
![Planning to make a variable power supply with this schematic and I was wondering if a switching power supply would be better than a transformer as the input? and if it is Planning to make a variable power supply with this schematic and I was wondering if a switching power supply would be better than a transformer as the input? and if it is](https://preview.redd.it/xxn2l0kdxr091.gif?format=png8&s=c7c1d5b5ab2619f0e060a6c643b9b76715beb893)
Planning to make a variable power supply with this schematic and I was wondering if a switching power supply would be better than a transformer as the input? and if it is
![LM338K adjustable voltage regulator power supply board adjustable voltage regulator module adjustable linear regulator with rect - AliExpress LM338K adjustable voltage regulator power supply board adjustable voltage regulator module adjustable linear regulator with rect - AliExpress](https://ae01.alicdn.com/kf/Sb67e69ee0f994520b84fdac5a633a20dh/LM338K-adjustable-voltage-regulator-power-supply-board-adjustable-voltage-regulator-module-adjustable-linear-regulator-with-rect.jpg)
LM338K adjustable voltage regulator power supply board adjustable voltage regulator module adjustable linear regulator with rect - AliExpress
![1.2V To 32V 5A Adjustable Power Supply Using LM338K | Circuit Ideas I Electronic DIY Projects I Robotics 1.2V To 32V 5A Adjustable Power Supply Using LM338K | Circuit Ideas I Electronic DIY Projects I Robotics](https://www.twovolt.com/wp-content/uploads/2016/07/5A_Adjustable_Regulated_Power_Supply_SILK.png)
1.2V To 32V 5A Adjustable Power Supply Using LM338K | Circuit Ideas I Electronic DIY Projects I Robotics
![LM338K Adjustable Voltage Stabilized Power Supply Board Linear Regulator Module with Rectification Filter 3.3V 3V 5V 9V 12V 24V - AliExpress LM338K Adjustable Voltage Stabilized Power Supply Board Linear Regulator Module with Rectification Filter 3.3V 3V 5V 9V 12V 24V - AliExpress](https://ae01.alicdn.com/kf/H4f15b935ce0d44cb84c0a6d1d65646289/LM338K-Adjustable-Voltage-Stabilized-Power-Supply-Board-Linear-Regulator-Module-with-Rectification-Filter-3-3V-3V.jpg)