Adjustable breadboard power supply
Adjustable breadboard power supply
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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). For design documents, instructions, parts list, etc. Check out the project webpage!
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