# Solutions Search - Current Source

## Hybrid Wide Dimming Ratio Linear LED Current Controller Using LT8614 & LT3083/LT6015

Oct 17th 2016

Many applications for LED illumination require wide dimming ratios. This can be accomplished simply via an adjustable current source as show below. The current source can be varied by a number of different means, and a large LED current range can be achieved. The primary problem with this technique is that the power dissipation ...

## LTSpice: Plotting a Parameter Against Something Other Than Time (e.g. Resistance)

Mar 25th 2016

A common use for LTSpice® is to run a time domain transient analysis where a parameter (e.g. voltage or current) can be plotted against time. Occasionally, you may wish to know the behavior of a circuit versus another parameter such as resistance. This can be done by using the “.measure” and “.step” ...

## Powering Altera Arria 10 FPGA and Arria 10 SoC: Tested and Verified Power Management Solutions

Feb 19th 2016

Design Note DN549: Introduction
FPGA development kits allow system developers to evaluate an FPGA without having to design a complete system. Figures 1 and 2 show Altera’s new 20nm Arria 10 FPGAs and Arria 10 SoCs (System-on-Chip) development boards. These boards are tested and verified by Altera, exemplifying best design ...

## Shutdown with the LT3080x Current Source Reference Linear Regulators

Jan 21st 2016

Current Source Reference Linear Regulators
In many low noise applications, a linear regulator is an ideal solution for the power conversion due to its very low output voltage noise and low electromagnetic noise generation (compared to a charge pump or a switching regulator). The LT308x linear regulator family is ideal for these ...

## Paralleling Linear Regulators Made Easy

May 21st 2015

Linear regulators provide a simple, low noise solution for dc-dc regulation. However, at higher Vin-Vout differentials the low efficiency and high power dissipation of linear regulators limits the ammount of output current that can realistically be delivered. Connecting multiple linear regulators in parallel spreads the ...

## Loop Gain and its Effect on Analog Control Systems

Jan 26th 2015

Abstract
This article brings together the ideas of open loop gain, closed loop gain, gain and phase margin, minimum gain stability and shows how these parameters are interrelated in a feedback system. It examines loop gain in terms of a theoretical control system as well as practical electronic circuits, including linear regulators.
Introduction
Bob ...

## Control the Voltage of a Remote Load Over Any Length of Copper Wire

Jul 8th 2014

Introduction
A common problem in power distribution systems is loss of regulation due to the cable/wire voltage drop between the regulator and the load. Any increase in wire resistance, cable length or load current increases the voltage drop over the distribution wire, increasing the difference between actual voltage at the ...