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Discussion Title Created date
Humidity and temperature sensor
Hello Freaks... I would like some advice for a humidity and temperature sensor. Temperatures are from 100 to 0 C The problems: - normal wind 28 m/s - maximum wind 30 m/s - dust -...
Thu. Oct 27, 2016 - 01:15 AM
Energy Meter Project - ATM90E36A
Hello Freaks... How long?   Freaks I'm looking a project for a Energy Meter board for poly-phase measurement. I'm looking for a partner in this project.  I'm with the...
Mon. Jul 18, 2016 - 12:28 PM
Power Transformer restart problem - how to avoid
Hello freaks....   First... I wish a happy Christmas...   There is a problem that intrigues me. There is a lot power transformers (12,5 to 25 kV <---> 380 V,...
Thu. Dec 24, 2015 - 10:19 PM
PTC wrong resistance
Hey freaks...   I was analyzing a bad board trying to find something wrong.  Something that puzzles me. There is 4 PTC in the board, 2 of them shown the resistance that...
Fri. Oct 2, 2015 - 12:37 AM
MCP16301 Iout 600 mA?
Hello Freaks...   Doesn't anyone had used the MCP16301 on Iout around 600 mA? Does it goes up to 600 mA or I need the Boost Bias?   The maximum output current that I...
Mon. Jun 22, 2015 - 06:16 PM
Certification Price and new devices
Hey freaks...   I was thinking about the price to certificate our new radio here in Brazil (ISM band 1W) was expensive and I'll ask to you the price in US or other countries...
Wed. May 20, 2015 - 12:18 PM
Piezoeletric energy
Hey freaks... Last month we receive some piezoelectric and we performed some tests to it work as vibration sensor. Then I started to think about some application using the...
Tue. May 19, 2015 - 02:51 AM
IoT networks
Hey freaks...   Guys what you are hearing about Sigfox or Weightless? The idea is to create a low-power and low-cost network for IoT, it's really nice...   http://www....
Fri. May 15, 2015 - 06:51 PM
Pcb Panelization
Hey freaks...   Freaks we are trying to produce cheaper PCBs here, Brazil, but another problem we had. We need to create the panel from our PCBs so the manufacture could...
Mon. May 4, 2015 - 07:17 PM
Small ISP connector
Hey guys...   I my last design the board is small (populate IC's  and board size of 4 x 6 cm) then the ISP connector is big in comparison with the board.    I...
Sat. Apr 18, 2015 - 02:18 PM
AC Motor and Mosfet Switch
Hey freaks...   In this topic, we discuss about use a Mosfet to switch mains voltage.    Now consider to use that idea in a AC Motor to control its speed, kind of...
Fri. Mar 6, 2015 - 02:25 AM
MOSFET and sine switch
Hey freaks... This circuit: Power source (sine wave) ------ mosfet N ----- load ---- return (Gnd) What is the concerns about the driver circuit of the mosfet? To switch...
Thu. Mar 5, 2015 - 02:03 AM

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