PCB Heaven BLOG
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Product Review - How cheap is a cheap power supply |
28 December 2011
Author: Giorgos Lazaridis
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| I got from ebay a cheap power supply for my canon camera. It appeared as a normal power supply, with the canon brand printed on the label. It worked fine for some time, and then things turned really nasty... |
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My Job - Retrofit Star Delta motor automation on band saw |
31 May 2011
Author: Giorgos Lazaridis
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| In this BLOG entry i explain how can someone make a very simple and reliable Start Delta AC motor automation. I made this automation because i was asked to retrofit an old band saw woodworking machine which had an old manual star-delta switch and no motor protection at all. |
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My Job - Repairing a pneumatic foot pedal |
8 May 2011
Author: Giorgos Lazaridis
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| Many people think that when a pneumatic valve or other equipment fails, it has to be replaced with a new one. That is not correct. Pneumatic valves and regulators can be easily repaired just like pneumatic cylinders. In this BLOG entry i explain how can someone repair a pneumatic valve found inside a foot pedal. |
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How to salvage parts from PCBs |
8 April 2011
Author: Giorgos Lazaridis
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| I uploaded this blog entry, after a conversation i had with a reader from China, who told me that he strips parts from old PCBs. I thought that more people may find this simple technique rather useful. I used to struggle with the solder iron and the pump to remove the parts form the PCBs, but with this way, it is a piece of cake! |
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Product Review - IR remote Control Jammer |
28 March 2011
Author: Giorgos Lazaridis
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| Alan Parekh from Alan’s Electronic Projects, also known from Hacked Gadgets, offered me some goods from his online store, as well as a kit from his Electronic Kits store, anInfrared Remote Control Jammer, which i made and test it, and finally wrote this review. |
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My Job - Repairing a NUM controller on a BIMA CNC center |
11 March 2011
Author: Giorgos Lazaridis
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| I decided to start posting the most interesting cases that i meet in my day job. I work as a CNC technician for high-end machines from the best makers of the world. In this first post, i had to go deep inside the NUM controller of a BIMA 300 CNC center (maker IMA) to find that the CPU of the NUM processor had a bad connection in one of its pins. |
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Product Review - Linistepper |
4 December 2010
Author: Giorgos Lazaridis
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| James Newton from Piclist offered me a Linistepper for my instant cold coffee machine project that i've been working past 7 months. Before i put this Linistepper to work, i felt like reviewing this item. |
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PC Fan Controlling Methods |
30 March 2010
Author: Giorgos Lazaridis
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| Having the fans categorized by the number of wires they have, i explain the reasons and the ways that they can be controlled. For each controlling method i have at least one link to a circuit that demonstrates this method, as well as i have links to interesting theories for the operation of the PC fans. |
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The Origin Of Internet |
11 June 2009
Author: Charalambos Sivridis
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| Do you really now the origin of the internet? This article is the general accepted (perhaps unofficial) story of the birth of what we today know as “Internet”. |
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Electronic waste and recycling |
22 April 2009
Author: Charalambos Sivridis
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| Loads of electrical and electronic devices are dumped every day uncontrolled in landfills polluting fields and the underground water. We have to know that electronic waste is highly toxic and full with carcinogenic substances and in a heavily polluted environment such as ours there has to be some kind of guidelines in order to prevent or minimize further pollution. |
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PC Cooling Methods |
9 April 2009
Author: Giorgos Lazaridis
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| In this article I will try to present the most known and commonly used ways of cooling a PC. Each method will be described in terms of operation, advantages and disadvantages against the other methods. |
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To WiFi or not to WiFi |
26 March 2009
Author: Charalambos Sivridis
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| Within this article, we will discuss the affects of the wireless networks on the human body, the risks and precautions that can be taken to reduce those risks. The article is based onto official researches for the wireless networks and the use of microwave bands for communications. |
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