Chiphacker - chiphacker.com - Recent Questions - Electrical Engineering Stack Exchange
General Information:
Latest News:
230V/230V AC relay circuit 27 Aug 2013 | 02:38 pm
I've built a nice programmable switch basing on Raspberry and a relay board. It's fine for driving common 230V appliances but the relays seem rather flimsy; I wouldn't trust them to run 10A of current...
Selectively measuring AC magnetic fields with a Hall sensor (and getting an accurate Tesla reading) 27 Aug 2013 | 02:05 pm
Is it possible to only measure AC electromagnetic fields in the 40 Hz — 120 Hz range with a resolution of 0.01 µT using a Hall effect sensor? If so, how would one go about doing it, and what particula...
What is the use of a -5V supply rail on a bench PSU? 27 Aug 2013 | 12:44 pm
I am converting a ATX computer power supply into a bench power supply and I was wondering if I would need the -5 volts. I know I might need the -12 volts for op amps but is there any point of using a ...
Can I use a CNC 3020 router on Linux with a USB to parallel cable to mill PCBs? 27 Aug 2013 | 11:58 am
I'm not sure if this is the right place for this question, but I'm hoping someone here has been in the same situation. I want to start milling PCBs. The CNC 3020 router looks awesome but I'm not sure...
Long Range Automobile Collision Detector 27 Aug 2013 | 11:44 am
I know that maybe this is not the right place to ask this question, however this is a question which requires an answer by a professional. Here is the thing: There is a truck which is currying explos...
Uses of inverters in this circuit? 27 Aug 2013 | 11:21 am
In this article, http://www.edn.com/design/test-and-measurement/4391393/Single-hex-inverter-IC-makes-four-test-gadgets, A circuit is used to detect a user degined low logic level and high logic level...
Which of the following microcontrollers can talk to a CC3000 WiFi chip? 27 Aug 2013 | 10:29 am
I need to build a hardware device that consists of a microcontroller and a CC3000 WiFi chip. I would like to use any one of the following microcontrollers built by Texas Instruments: MSP430F2491 MSP...
What can't the ATtiny do that the Arduino can? 27 Aug 2013 | 09:09 am
Inspired by this Make Magazine youtube video, I would like use the ATtiny chips instead of the Arduino for most of my projects. The video author warns that some Arduino functions won't work on the ATt...
Multiple LCD panels forming a single display? [on hold] 27 Aug 2013 | 07:11 am
Let's say I want to buy many small/cheap LCD displays (I'm thinking about 20) and arrange them in a matrix to form a single display (from the computer's perspective). Where do I start? What kind of di...
LR oscillators (no capacitor) 27 Aug 2013 | 05:10 am
How could a frequency be generated using one inductor and no capacitors? The waveform is unimportant. The active component could be transistors, logic gates (including schmitt triggers), or if necessa...
