12V to 28V DC Converter By LM2585

In case of you want to use Voltage 28V sizes for apply to Relay 28V. But you have just DC power supply Regulator 12V. Will do ? good! The exit is good. Be build DC to DC converter be 12VDC to 28VDC converter.....Read more

My first adjustable power supply IC 78xx

This was my first a adjustable power supply circuit with IC 78xx. I made it myself last years because it easy and cheap. Before , I used the AA battery 1.5V but when used for long time it does not work well. It’s consume a lot of current when used, so I think of making this circuit,works very well.
It gave me useful Multiple values of voltage regulator 5V,6V,9V,12V at maximum than 1Amp. Read more

Mini variable voltage regulator power supply in my heart.

Before, I liked to this circuit so much,because it can use for gave electric power to anything my circuit,which I want to voltage 1.5V to 30V at current less than 1amp.
This have a IC DC voltage regulator or step down dc converter No. LM317 is main of circuit.Read more