electrical-workbench.co.uk
The Electrical Workbench: Op-Amp Compensation
http://www.electrical-workbench.co.uk/2015/07/op-amp-compensation_27.html
Monday, 27 July 2015. Compensation of operational amplifiers (op-amps) is an often neglected topic as many people perceive it as too hard to understand, I'm not going to lie there is a lot of math involved if you get deep in to it, but thanks to modern circuit simulation as well as wide availability of oscilloscopes and signal generators an effective compensation can be achieved with just trial and error. However I did not add in typical parasitic amounts of capacitance you will usually encounter, this w...
electrical-workbench.co.uk
The Electrical Workbench: Raspberry Pi Review
http://www.electrical-workbench.co.uk/2015/05/raspberry-pi-review.html
Monday, 18 May 2015. The specifications are fairly impressive as well featuring a quad core ARM Cortex-A7 clocked at 900MHz, a Broadcom VideCore IV clocked at 250MHz and 1GB of RAM which is shared with the GPU, easily enough grunt for full HD video playback and a good number of games and applications. Raspberry PI 2 Model B. I wouldn't really call the Pi easy to use, particularly if you've never used Linux before, things like getting a wireless adapter to work can take quite a bit of effort if you're unl...
electrical-workbench.co.uk
The Electrical Workbench: Top Articles
http://www.electrical-workbench.co.uk/p/articles.html
All are sorted by date (newest first). Updates and other less useful stuff is not included. Published 21 September 2013 (Rev 1.01). Power Limiting Your Projects. High Voltage Power Supply Design - Part 1. Boost Converter Design - Part 2. Boost Converter Design - Part 1. How to choose a bench power supply. Micro-Controller High Current Switching - Part 2. Micro-Controller High Current Switching. Rooting Android Q8H A23 Tablet. Korg MS2000 and MS2000R Power Supply Replacement. Simple battery backup switch.
electrical-workbench.co.uk
The Electrical Workbench: Micro-Controller High Current Switching
http://www.electrical-workbench.co.uk/2015/05/micro-controller-high-current-switching.html
Thursday, 7 May 2015. Micro-Controller High Current Switching. All micro-controllers are rather limited when it comes to switching high amounts of current, the popular Atmel ATMEGA 328 which is used by Arduino and other development platforms can only source up to 40mA and sink up to xmA per I/O pin, source means current flowing out of the pin and sink means current flowing into the pin, there is also a maximum total current limit of 100mA. Bipolar Junction Transistor (BJT). Can switch many amps easily.
electrical-workbench.co.uk
The Electrical Workbench: Micro-Controller High Current Switching - Part 2
http://www.electrical-workbench.co.uk/2015/05/micro-controller-high-current-switching_10.html
Sunday, 10 May 2015. Micro-Controller High Current Switching - Part 2. In the Previous Post. I showed how to switch high current loads using a low current signal such as from a micro-controller, those loads had one side fixed at the supply voltage (called a high side load) but sometimes you need to switch a load that is fixed at ground.(a low side load). To do this you can make use of PNP BJTs and P channel MOSFETs like so:. BJTs are available in a darlington configuration, this greatly increases beta at...
electrical-workbench.co.uk
The Electrical Workbench: How to choose a bench power supply
http://www.electrical-workbench.co.uk/2015/05/how-to-choose-bench-power-supply.html
Sunday, 10 May 2015. How to choose a bench power supply. The first and most important thing to do is to make a list of the minimum specifications you need to meet, these are what I would consider the minimum for a good general purpose bench supply:. The outputs being fully isolated from earth ground. Types of power supplies. Power supplies come in three main types:. Uses a mains power transformer and a linear regulator. Simple design makes easy repair. Has a low noise output (usually). For price you shou...
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