An excellent way to do this voltage translation is to use an HC4053 device. This will translate three lines. Basically you connect Vcc to +5, Vee to -5 and of course gnd to gnd. Your 0-5V logic controls the analog switch control inputs (usually labeled A, B, and C). Then hook the X inputs to GND...
dau,
You did not mention how you are controlling the J309. N Chan JFETs as switches will have varying on resistance from device to device and also the threshold of devices varies as well. Leakage current could also contribute to the difference. When using J309s, I usually pinch them off with at...
For completeness, I like this website that markets the very well made Hummel line from Germany.
http://www.sealconusa.com/
Strain reliefs and all kinds of glands.
I am a scale designer and work with mechanical engineers in the design of precision load cells. What gdechaine is asking for I believe is how to attach strain gages directly to the armature of the piston. The placement of gages for accurate measurement is an art. When the structure gages must be...
It's quite common to heat LCDs at low temperature. Minco makes a transparent heater that is self regulating. Or you can use a low cost thermostat to turn on the heater at low temperatures. National LM26 is a good choice. I've also used 1 watt surface mount resistors as a heater mounted...
Actually, you can make a highly accurate millivolt source using matched thin film resistors in a kelvin - varley divider configuration. I have designed and built many millivolt sources of various complexity and resolutions. It can be done with only a 6.5 digit multimeter for matching resistors...
I'm designing a device with two LED annunciators that must be NVIS A compatible. This device is not in a cockpit and does not require intensity matching. Does anyone know which frequency of LED best meets the requirement. A GAP LED is 555nm, which I think is ideal. However, these are dim by...
