Separating ground planes with an impedance The ferrite bead will block high frequency signals from crossing grounds. With your digital ground you usually have a lot of noise brought on by the clock signal and the flurry...
Tuesday, 3 March 2009 - 21:06
ADC voltage question pertaining to input protection First off the protection circuit you have is valid and the results you're seeing are proper - no problems with your theory or implementation or analysis. I think the main problem...
Thursday, 22 January 2009 - 15:16
temperature and water level control using fuzzy logic For basic understanding of fuzzy logic control systems I have found no better book than Fuzzy Control by Passino and Yurkovich:
http://www.amazon.com/Fuzzy-Cont...
This is a great...
Tuesday, 20 January 2009 - 13:09
solar powered blinking LEDs First thing I notice is that your capacitor is not a constant voltage source. It will discharge as you draw current from it, lowering the voltage. A simple resistor in series...
Tuesday, 2 December 2008 - 18:28
Minimal Laptop Requirements I have an old Compaq armada (also known as tank, i dropped it on a brick floor and it kept going...) laptop with a Pentium 2 233MHz, 96MB of RAM. It's running Windows XP and I...
Sunday, 16 November 2008 - 15:39
NiMH rechargeable battery pack I would think not if the batteries are the same (ie, have similar heat transfer characteristics) and you place the thermistor in a similar location with similar mounting. The...
Monday, 10 November 2008 - 15:36
AVR regulator.. Large Output Ripple. Oscillation is definitely a symptom of control issues. When you start getting into control systems you have to take into account ADC noise (which limits your useful measurement,...
Wednesday, 5 November 2008 - 18:12
the best unipolar single ended to differential circuit I'm wondering about the need for a differential signal. Are you worried about transmission noise or only have a differential ADC, or want to use the gain modes? It seems to me...
Wednesday, 5 November 2008 - 17:39
Design power supplies question All on the same circuit - not a good idea. If your motor is being run with PWM then you'll have a lot of noise on the power lines, and if the grounds for the motor controller and...
Monday, 3 November 2008 - 14:32
Electrical CAD Software TinyCAD - http://tinycad.sourceforge.net/
It's basic but does everything I want, easy to use, and can generate layout netlists or SPICE netlists. It hasn't been updated in a...
Wednesday, 15 October 2008 - 13:22
Accurate small current sensing Another possibility is a hall effect sensor. This measures the magnetic field that the current produces when it runs through a wire. I IMAGINE it's possible to get very precise...
Tuesday, 9 September 2008 - 17:01
Serial Port trouble, only get spaces You also might want to try another terminal program - I've used Realterm forever and it works very well. I know that Hyperterminal only lets you view data in either ASCII or ANSI...
The ferrite bead will block high frequency signals from crossing grounds. With your digital ground you usually have a lot of noise brought on by the clock signal and the flurry...
First off the protection circuit you have is valid and the results you're seeing are proper - no problems with your theory or implementation or analysis. I think the main problem...
For basic understanding of fuzzy logic control systems I have found no better book than Fuzzy Control by Passino and Yurkovich: http://www.amazon.com/Fuzzy-Cont... This is a great...
First thing I notice is that your capacitor is not a constant voltage source. It will discharge as you draw current from it, lowering the voltage. A simple resistor in series...
I have an old Compaq armada (also known as tank, i dropped it on a brick floor and it kept going...) laptop with a Pentium 2 233MHz, 96MB of RAM. It's running Windows XP and I...
I would think not if the batteries are the same (ie, have similar heat transfer characteristics) and you place the thermistor in a similar location with similar mounting. The...
Oscillation is definitely a symptom of control issues. When you start getting into control systems you have to take into account ADC noise (which limits your useful measurement,...
I'm wondering about the need for a differential signal. Are you worried about transmission noise or only have a differential ADC, or want to use the gain modes? It seems to me...
All on the same circuit - not a good idea. If your motor is being run with PWM then you'll have a lot of noise on the power lines, and if the grounds for the motor controller and...
TinyCAD - http://tinycad.sourceforge.net/ It's basic but does everything I want, easy to use, and can generate layout netlists or SPICE netlists. It hasn't been updated in a...
Another possibility is a hall effect sensor. This measures the magnetic field that the current produces when it runs through a wire. I IMAGINE it's possible to get very precise...
You also might want to try another terminal program - I've used Realterm forever and it works very well. I know that Hyperterminal only lets you view data in either ASCII or ANSI...
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