Electronics > Beginners
Help me design a PSU
Efe_114:
I want to make a small psu that could go up to 15 volts and DOWN TO 0 VOLTS (because i like hard projects) .no current limit needed. i want to make it out off jellybean parts and not copy it from a random website. And most importantly im a beginner(i have been in hobby for 3 years but since 90% of my projects fail i call myself beginner)Can anyone help me about this? Also this is my first post in this forum so forgive my mistakes please ;)
wraper:
Does it really need to go down to zero? If minimum of 1.2V is fine, simplest LM317 based schematics would do the job. Also what maximum current is needed?
Efe_114:
Half an amp or 1 amp will do the job for me. my main purpose of building this is to make a project that i will use . I want to improve my design skills and also improve this circuit over time. I dont want to just lm317 on its own cuz as i said i dont like simple stuff. I want to go a little bit more complicated. And also i want to make it dual tracking if possible.
Efe_114:
Efficiency is not an issue since i will use it on low power.
wraper:
--- Quote from: Efe_114 on November 13, 2018, 06:22:03 pm ---I dont want to just lm317 on its own cuz as i said i dont like simple stuff. I want to go a little bit more complicated.
--- End quote ---
Then why you don't need current limit? Generally it's way more useful than going down to 0V. Tracking generally is not very useful and quite complicated to do on isolated channels. Generally it would be better to just have 2 isolated independent channels or 2 separate PSUs rather than having 2 channels with common GND and tracking.
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