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Magnetic linear piston
I am at vacation and decided to play with a plastic pipe and thinking if I can convert it to a magnetic piston. I have 200mm long plastic pipe outer diameter=20 inner diameter=...
Saturday, 22 January 2011 - 20:06
How to rectify to 320VDC from a 3phase 230VAC source
I am trying to rectify 320Vdc from the following networkd: 3 phase L1-N=230Vac.eff phase=0degree L2-N=230Vac.eff phase=120degree L3-N=230Vac.eff phase=240degree L1-L2=400Vac.eff...
Wednesday, 19 January 2011 - 15:22
Future of ATMEGA128
I got used to ATmega128 for small amount (up to 100)/ high memory requirement projects. where price is second priority I have also some high amount (1000+)/ low memory /similar or...
Sunday, 2 January 2011 - 11:26
0.7V..20V wide input step up converter with 15V fixed output
I need a wide input voltage (0.7V .. 20V) boost (stepup converter) that should deliver an output voltage of 15V fixed (100mA). I investigated some commercial Ics from TI and...
Thursday, 30 December 2010 - 13:48
New hardware suggestion for debouncing push/membran buttons
I want to construct a simple hardware setup (without applying software debouncing code). I thought of the following. I connect the pushbutton on the input of an optocoupler....
Thursday, 16 December 2010 - 17:05
GCC - Codevision migration memory model problem
I am trying to convert integer to string using itoa, but I get the following error messega which I dont have in GCC: function argument #1 of type 'unsigned char *' is incompatible...
Thursday, 16 December 2010 - 14:56
ATMEG128 LCD problem (Codevision evaluation)
I wired an 2x16 LCD through PortA (4 bit mode) and try to see some characters using Codevision Evaluation version. I double checked the connections GND, +5V, GND , RS, RW , E ,...
Wednesday, 15 December 2010 - 19:07
How to solder a capacitor bank without thermal pad
I am trying to build a simple capacitor bank containing 40 of 47nF 2000V MKP type capacitors. Instead of conventional PCB manufactoring I prefer to mill the PCB because there are...
Saturday, 11 December 2010 - 18:57
ATMEGA128 Phase and Freq correct PWM Mode 9
I have the following setup (codevision compiler) TCCR1A COM1A1=0 COM1A0=1 WGM11=0 WGM10=1 TCCR1B WGM13=1 WGM12=0 CS12=0 CS11=0 CS10=1 Mode 9 , Phase and Frequency correct mode...
Saturday, 20 November 2010 - 22:23
Signiture does not match selected device (STK500)
Hallo, I breadboarded ATmega16-16PI and then connected STK500 ISP6PIN header to the breadboard to erase and program the device. I selected ATMEGA16 on the Programmer. I can erase...
Friday, 19 November 2010 - 15:43
X7R MLCC specification, is it a joke?
For a resonant tank I need an MLCC capacitor, I need 100nF 2000V (so If I choose C0G or NP0 it costs explode to 20 fold). So I carefully examined the specifications of X7R to...
Friday, 4 June 2010 - 16:45
Differences between crystal oscillator and silicon oscilator
I saw some silicon based oscilators from Linear tech. LTC6930 - 32.768kHz to 8.192MHz Precision µPower Oscillators What can be main differences. Do they have better temperature...
Thursday, 27 May 2010 - 20:44

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