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Weird opamp results
Check the voltage at the + input of LM324. Is it really 2.5 Volt? Does it change also?
Sunday, 23 June 2013 - 17:11
Weird opamp results
Give us the real schematic, including supply etc.!
Sunday, 23 June 2013 - 14:56
Tri-state during reset condition... what about power off?
If the VCC is zero, as it is in the off-state, the protection diodes on the pins will probabably limit the voltage on the pins to be below 0.7V. It might actually happen that a...
Monday, 10 June 2013 - 06:46
Kalman Filters
If it could be done in the apollo project, it should be possible in an AVR ? These are also nice! I have them in my collection. http://www....
Wednesday, 29 May 2013 - 21:35
Ground-bounce when driving MOSFET
I often use the following (symptomatic) approach: I clamp an ferrite (see picture) around one of the "long" cables involved. If the symptom changes, a "common-mode" current...
Wednesday, 29 May 2013 - 21:26
The real winner of Eurovision: 11 000 ATtiny44A
That's great, many thanks for sharing that info.
Tuesday, 21 May 2013 - 06:09
What is a decade resistor box useful for?
I think they partly date from a time when 1% resistors were not that cheap and easiliy obtainable.
Saturday, 18 May 2013 - 09:37
Sound circuit
I woukld record a wave at 22000 samples/sec and replay it with an AVR using PWM. A pwm driven 5V MOSFET full bridge already gives a lot of power, at 12 V even more, without any...
Saturday, 18 May 2013 - 09:35
Xmega128A1 PLL range (solved)
@ErikT Thanks for your routine. It worked immediately and showed what I made wrong: I changed the pre-dividers in CLK_PSCTRL after having switched to PLL clock. That seemed to "...
Sunday, 14 April 2013 - 14:57
Xmega128A1 PLL range (solved)
Setup is as follows: The external clock input XTAL1 is enabled. A signalgenerator with variable frequency (1MHZ..10MHz) is attached to XTAL1. If I select this clock as system...
Monday, 8 April 2013 - 19:29
Quote:which dedicated ic is good tl494,uc3844,uc3854? I like them all. In the hand of a good designer I think they all perform a wonderful job!
Thursday, 4 April 2013 - 16:12
Spare uC pins. WHat do you do with them??
In a PCB layout I would make the pina accessible via small pads. I often use them for unforseen debug purposes later: A Led, a software RS232, a software PWM, a parameter setup...
Saturday, 16 March 2013 - 17:14