0-30V 3A Adjustable DC Supply
This is cheap adjustable 0-30V 3A Laboratory DC Power Supply circuit. It is high efficiency regulator circuit by using IC regulator UA723 and TIP3055 as power transistor so easy to install. It is designed to protect over current load maximum 3A Technical data -Need to use transformer : 12-0-12V 4A. …
Cheap adjustable  0-30V 2A Laboratory DC Power Supply
This 0-30V power supply is the variable voltage Regulator at 2A max, by used IC-723 for control volt stable regulated. The 2N3055 power transistor for boost up current to 2 Amp. It suitable for general electronics work shop. Because it is a simple circuit and easy circuit. In addition to …
Adjustable Regulator by TL431
This be simple Adjustable voltage regulator power supply circuit, at use integrated number circuit TL431. By from the circuit can fine volt 3V – 30V, depend on feed volt supply input and change the value R2 , R1. It follow a formula calculates Vout = (1+R1/R2) , Vref = 3V-30V …