Hey! today I am going to show you how to make a lab bench power supply with very important properties.Such as current limiting. I searched in the internet for this but I couldn't find a single solution. So I thought to design a one for me and it worked nicely. So I thought of sharing my design on my blog OK. this is what we going to make. This will cost around 400$ on eBay . i cannot guarantee that u can build the exact thing. But this will make an equivalent This is what i built with my circuit diagram. Doesn't it looks cool. Still the front panel is not printed for identification of controllers. there are 2 channels on the instrument. Left and Right both are equal and works separately. 1st 3 knobs are voltage, voltage fine tuning and current limiting.And the same for next 3 knobs. 1st 2 terminals are +v and -v for the 1st channel and the next two are for channel 2. bottom terminal is digital High (+5v) which is also and essential voltage output. So lets start
.gif)
The input voltage is 12V?
ReplyDeleteCan I add more LEDs (there are 4 - 2red and 2 blue-right)?
Can I use 5V from USB for this?
Thanks. I'm a beginnner but if u help me to do this I will apreciate that.
yes u can add more led's for this every one with separated bc547 branches.see this diagram and manage to create a new branch
ReplyDeleteI have not tested this for 5V but it must work with it.If not change all 470Ohm resistors which are directly connected to LED's to 220Ohm.
You are welcome.and thank u for using my blog