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AVR JTAG MKII 50% off - get them quick!
50% Off a STK500 Starter Kit—Only $39 50% Off a JTAGICE2 —Only $149 Thanks for the heads up. Peter
Wednesday, 31 October 2007 - 03:37
AVR and an Inductive Sensor
Here is a possible circuit for sensor conditioning. R4 is for LED only. R5 protects the comparator against high sensor voltage. R2 adjusts the sensitivity Resistor values can be...
Monday, 6 August 2007 - 23:06
AVR and an Inductive Sensor
Try connecting the sensor to the microphone input on your PC. Capture the waveform and analyze it using the multiple freeware programs. (google soundcard scope) Post the...
Sunday, 5 August 2007 - 15:06
help with TTL / RS232 level converter (MAX211)
mooseydoom wrote: For the MAX211 chip, should the V+ pin be +10V, and the V- pin be -10V? (With Vcc = +5V) My multimeter readings: v- = .026v v+ = 3.82v vcc = 4.907v chip is...
Saturday, 7 July 2007 - 14:36
adc with signals of high output impedence
Mike I totally agree that the capacitor does have limitations, however I don't belive that a gas sensor sampling needs more then 1 sample per second. Peter
Saturday, 7 July 2007 - 14:24
adc with signals of high output impedence
Josh Try adding 10nF capacitor to your ADC input. This will provide charge storage >1000 times greater then the sampling capacitance of the ADC. You should limit the sampling rate...
Friday, 6 July 2007 - 19:05
Lennart For 150mA AC load I would use AC rated optomos SSR and drive it with 5mA DC. Peter
Monday, 5 March 2007 - 03:22
Power AVR from 24V AC
Couple of questions Do you need mechanical relay or would low power SSR work? How many mA can you drain off the 24VAC ? Is this a 2 wire home thermostat application? Peter
Friday, 17 November 2006 - 23:52
Switching high current load
@paramax55: Can you describe the exact type of load and the supply voltage. Capacitive, motor, lamp and inductive loads all have different requirements. Peter
Monday, 3 July 2006 - 13:53
OT: decoupling cap for atmega16
Tasrus Quote: Posted: Nov 24, 2005 - 02:17 AM -------------------------------------------------------------------------------- Hello, I was wondering if anyone could...
Monday, 15 May 2006 - 13:15
Measuring RMS, and transformer distortion
Another possibility is to run the transformer in current mode. Put a current limiting resistor in the primary circuit and check the current on the secondary. running the...
Saturday, 6 May 2006 - 14:12
Tantalum Polarity
For a non-destructive test use 12V supply and a DMM voltmeter in series with the charging capacitor. A properly polarized capacitor will show less then 1uA leakage. Peter
Tuesday, 4 April 2006 - 13:19