The holes drilled will be at different depths and will change when used for different applications. There are very specific reasons why the drill bit has to be...
As another thought, How about using a milling machine? I know there may be lots of reasons this may not be viable due to the work piece. But if it was visable,...
The custom (trans)ducers use a thin shell piezo element. The center seems partially filled with conductive epoxy, but mostly air. Outside the piezo is about...
Good day folks. I am writing to query the gurus out there for guidance for inexpensive thermocouple/interface IC combination suggestions. I am a hobbyist and I...
Hi Tod, AFAIK, Type K thermocouples are commonly used in ovens. One approach is to: 1. Amplify the thermocouple (TC) voltage with an InAmp (e.g. AD620 or ...
Hi Tod, Just an addition to Nick's approaches, MAX6675. It performs cold-junction compensation and digitize the signal from a type-K thermocouple. Data output...
Noncontact Sensor? Hi would any one know how to sense a transparent plastic sheet which is micron thin? I used IR but obviously it doesnt work since it is...
Prakash, Could you post some more context? What's the chemistry of the plastic? Are you looking for a sensor for a machine that that will be making these...
... Hi, Prakash- If the film is really a micron thick or less one can usually use interferometry. It is quite accurate and usually not too cumbersome. ...
If you're just looking to sense its presence, and not its thickness, have you considered an ultrasonic sensor? Hopefully the sheet would reflect enough sound...
Yes, that looks like the transducer. I drive it with a 4 cycle square wave burst. That comes from a pair of FETs on the ends of a center fed transformer...
Hi, I'm working on a problem in which I need to test the lifetime of a Proteus 100-series flow switch. It will be right next to a large cyclotron which caries...
Hi, Sarah I might be able to comment on your problems. I work on medical linear accelerators, and also have been studying proton cyclotrons and have had some...
Hi, Thanks for the help! I greatly appreciate it. I actually recently looked up info on the Proteus electronics, and it looks like in our model a relay is...
Hi, again, Sarah Without actuAlly looking at the complete circuit diagram, I can;t really assess the radiation damage risk. Again, remember that those flow...
Hi, there's one more thing. I just realized that the op-amp and the relay are both likely solid state, and therefore my theory about radiation being...
Hi, again First, let's consider something--the pot itself may not have changed. This is, I am guessing, apurely analog circuit, and so there is always some...
Hi, Well, I was really trying to figure out two things. 1.) If and why radiation, especially at high levels, would affect the circuitry of the flow switch...
Colleagues, I'm working on a small device, whose purpose is to produce 8W IR pulses with IR LEDs. Each pulse is 100us long. The pulses are produced only when...
A millisecond to come out of saturation? That it ridiculous. I could believe a couple of microseconds for a slow phototransistor. Could it be something...
... Nick, You might try a lower resistor value for the collector, or a base bias circuit, or even a current mirror. You might even try less light into the...
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