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21 Jan 2015

DIY-Dynamic-Electronic-Load_1-600x450electro

A DIY dynamic electronic load by Jay_Diddy_B over at EEVblog Forum:

The dynamic load steps the load current so that the transient response of the power supply being tested can be observed.
Features:
0-5A maximum continuous current
0-5A pulsed current at 330Hz

DIY dynamic electronic load – [Link]

23 Aug 2014

electrical-load-intro-600x290

A DIY 60W adjustable electrical load project from Electro-Labs:

In this project, we are building a useful board which should take place on your bench. It is an adjustable electrical load which can sink up to 5A @ 60W continuously. This board will come to aid when you need to draw an exact amount of current from a supply. For instance to learn the current rating of a power supply, measure the heat dissipated on a circuit element, discharge a battery etc.
The electrical load lets you monitor the current by using the ampermeter on it. A multiturn variable resistor is used to set the current precisely. The circuit is powered by a 15V-18V power adapter. A large heatsink on the board helps dissipating the heat generated on the MOSFET which is the main component used for limiting the current.

[via]

DIY 60W adjustable electrical load – [Link]

4 Jun 2014

2014-04-23 14.52.49

Jasper @ jasper.sikken.nl writes:

I designed an electric load. Using an Arduino Nano, the load can be programmed, and the voltage and current are measured. You can set a constant current (CC), a constant power (CP), or a constant resistance (CR) load by simply typing it in to the Arduino Serial Monitor. The circuit is designed for up to 30V, 5A, and 15W. An opamp, a mosfet, and a small sense resistor form the constant current circuit. The current is set using a DAC. Two other opamps measure the power supply voltage and the current. The circuit is powered from the Arduino USB voltage. I reflow soldered the board using the hacked toaster oven at the hackerdojo. Here are pictures of the reflow soldering process

Arduino based programmable load – [Link]

6 May 2011

Many design challenges ask participants to toss together some parts, blink a few LEDs, and write a bit of code for a shot at a prize. The NXP mbed Design Challenge 2010 staged by NXP, Elektor end Circuit Cellar was different. It was administered for the higher purpose of encouraging designers around the world to help make embedded design a more accessible, productive, and community-oriented endeavor. [via]

(VI)sualizer Smart Electronic Load wins NXP mbed Contest – [Link]


4 Nov 2010

Electronic Loads are devices which may be used to test a great variety of electronic designs. Generally speaking, electronic loads are devices which may be configured to act as artificial loads, sinking a preset current.

Basic Design of an Electronic Load – [Part1][Part2]



 
 
 

 

 

 

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