Breadboard supply A very low dropout adjustable power supply! This project details the design of a very low dropout adjustable power supply. A good power supply is essential to electronic projects. While there are many existing designs for adjustable power supplies, this one makes improvements that make it more useful for hobby designs
- MIC2941 regulator has guaranteed 1.25A output
- Low dropout, only 40mV – 400mV compared to 1.25V – 2.0V for LM317. This means you can use a wider range of output voltages including generating 3.3V from as low as 3.7V (such as 3 AA’s or a lithium ion battery)!
- Short circuit and overheating protection
- Input diode to protect circuitry from negative voltages or AC power supplies.
- 2.1mm DC jack and terminal connector for voltage inputs
- Two indicator LEDs for high and low voltages
- Output selection switch to select from 3.3v, 5v and Adjustable
- Onboard potentiometer for adjusting voltage from 1.25V up to within 0.5V of the input voltage. (20V max)
- On/Off switch for entire board
- Heat sink included
- Breadboard and battery clip or DC power supply is not included, you can use any DC power supply with 2.1mm plug (we have a nice one in the shop).
Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
Maker Business — Lessons Learned Scaling Airbnb 100X
Wearables — Start with a sketch
Electronics — When do I use X10?
Biohacking — Book Recommendation: Autonomous by Annalee Newitz
Sorry, the comment form is closed at this time.