1.2V-32V @3A Variable Switching Regulator using LM317
Power supply

1.2V-32V @3A Variable Switching Regulator using LM317

The circuit presented here is based on LM317. Generally, LM317 is known as a linear regulator IC, but here the circuit operates as a switching regulator. This circuit operates by transferring energy from the input to the output by using a solid state switch. Power Efficiency of a...

Continue Reading
3476
Views
0 Comments
Dual Adjustable Regulated power supply 1.2V TO 37V DC
Power supply

Dual Adjustable Regulated power supply 1.2V TO 37V DC

This project is a solution to power up most of devices or projects requiring dual (+/-) adjustable power supply. The circuit is based on LM317 positive and LM337 negative voltage regulators. LM3X7 series of adjustable 3 terminal regulators is capable of supplying in excess of 1.5A...

Continue Reading
3143
Views
1 Comments
LM317 smooths but doesn’t regulate
Basic Electronics

LM317 smooths but doesn’t regulate

Michael Dunn discuss about a circuit that smooths ripple and noise but doesn't regulates the output. A well known power supply circuit is the capacitance multiplier. It doesn't regulate, but instead reduces ripple & noise while the output tracks at some fraction of the input...

Continue Reading
2394
Views
2 Comments
1.2V to 37V Regulated Power Supply – 1.2A
Power supply

1.2V to 37V Regulated Power Supply – 1.2A

This project provides a variable output power supply ranging from 1.2 to 37 V @ 1.5 A. Uses industry populer LM317 in TO3 package for delivering variable output voltage. Specifications  Input 40 VDC or 28V AC 2Amps Output : 1.2 to 37 V @ 1.5 A regulated low ripple DC...

Continue Reading
2958
Views
0 Comments
Circuit adds foldback-current protection
Power supply

Circuit adds foldback-current protection

by Rafael Garcia-Gil @ edn.com: For many applications that require power-supply currents of a few amperes or less, three-terminal adjustable-output linear voltage regulators, such as National Semiconductor's LM317, offer ease of use, low cost, and full on-chip overload protection. The...

Continue Reading
2708
Views
0 Comments
Use an LM317 as 0 to 3V adjustable regulator
Power supply

Use an LM317 as 0 to 3V adjustable regulator

by Vladimir Rentyuk @ edn.com: Most engineers know that they can use an inexpensive, three-terminal adjustable regulator, such as Fairchild Semiconductor’s LM317, as an adjustable regulator to only some necessary value of voltage, such as 36 or 3V. This value cannot be less than...

Continue Reading
3033
Views
0 Comments
subscribe
Archives