Sci.Electronics.Design is a worldwide Usenet news group that is used to discuss various aspects of Electronic Circuit Design.
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Started by Unknown 4 minutes ago
Here is a circuit that I designed to transpose the subaudio output
from an instrumentation amp to a hgher frequency so it can be fed into
a standard PC soundcard and displayed using audio spectrog...
Phase shift no vane:
Phase shift with vane:
In the movies I start the fan in the wind tunnel, then switch it of again.
Posted by Rune - 12 minutes ago
Hi, Anyone have any clues on judging voids in solder joints for cyclic
high pressure applications(0 -350 bar, 0-5000 PSI)? More specific how
would a 0.1mm3 gas pocket under a D2pack on FR4 laminat...
Posted by Joerg - 16 minutes ago
It began last week. The Brother MFC-7820N multifunction laser printer
starts up out of the blue and sounds as if it wants to print something.
Fan comes on, display lights up, motors in there run. Bu...
Posted by Tim Wescott - 45 minutes ago
It's winter, and the amplifier in my PC speakers just died.
I think it'd be kinda cool to have a toob speaker amp, but I'm too lazy
(and time-challenged) to build one up from scratch.
I have a sensor the looks like as somewhat damped LC tuned circuit.
The resonance frequency will move with changing sensor stimulus between
say 10kHz and 20KHz. I need to find the r...
Posted by Jim Thompson - 1 hour ago
OT: Here ya go, PCB's the easy way....
| James E.Thompson | mens |
| Analog Innova...
Posted by bitrex - 1 hour ago
I'm trying to come up with a circuit that takes two signals of equal
magnitude, but out of phase 180 degrees, and provides a low impedance,
full wave _precision_ rectified output using no more tha...
Posted by Don Y - 1 hour ago
I need a relatively stable timebase against which to calibrate
my own *local* timebase.
Assume *my* environment is reasonably well controlled (temp, etc.).
Also, assume I can make measur...
Posted by amdx - 2 hours ago
I measure the Q of a 105nH inductor at 50Mhz my equipment max.
The Q is 80.
This is 57 / 80 = .71 ohms
But I'm using the inductor at 100Mhz.
Is there a way to calculate the Q at the higher fre...