Recent content by joniverson

I had a small device (the Mosfet in a lamp dimmer to be technical) burn out recently, but when it did it smoked a bit. The smell was enough to be noticeable throughout the house, so I held my breath, opened the windows and placed a fan aiming out the door to best rid the odor. After an hour...

Due to lack of available information, I have decided against a rotating platform and will use extra illumination for the shadow sides. Thanks again to those who replied.

Sorry, I don't think I was clear. Basically, I want to know the information regarding the formula: UV dose μWs/cm2 = UV intensity μW/cm2 × exposure time (seconds) Currently, for a non-rotating square object, it takes 15 minutes per side to attain the necessary 2,500 μW·s/cm2. Now, if...

I use UVC to sanitize. However, since I sometimes use HID lights, when it comes time to flip over or change the angle of objects and the light is deactivated, there is a 10-15 min cooldown period before the light will reignite. I have been thinking of using a rotating platform that would have...

Thanks, Tom, for the suggestions and tips, but unfortunately did not lead anywhere. That being said, I created a preliminary schematic after attempting to draw the device in question, but the pins and the device itself did not transfer correctly and I am nearly back to square one. I don't...

Actually, no, that was not a website I came across during my search. What is the link please? Thank you.

Ok, the device is a non-functional Rabbit Systems "white lightning" generator. These were made in the late 1980's. A similar device is here, much newer and a different design (dual mosfet driven flyback... the Rabbit unit uses a single TIP142). Not sure what happened to all of the Rabbit...

Hi, I am trying to eventually produce a schematic from a populated circuit board using the program Target 3001. I have been carefully locating and identifying as many parts on the board as possible for ease of placement later, but there is one problem: the board has an old nine pin flyback...

Well, I haven't written because the restorer I was in touch with said that single or multi aneroid capsules shouldn't matter and I should be able to get the accuracy needed in any case. So, after moving the linkage and axle bolt and adjusting them to just about every position I could try, I...

Ok, so, after your suggestion about the weight Tom, I actually did some experimentation last night as I couldn't wait until today. The relationship between increased weight simulating increased pressure versus linkage and/or bolt adjustment did confirm greater amplitude when the linkage was...

Hi Tom, Thanks for the weight idea! I will try that tomorrow. I did do a sort of rough check tonight with surprising results. I was able to fit both the barograph and a standard aneroid barometer I have here into a vacuum bag. I then inflated the bag and applied pressure. To my surprise...

Ok, I'm going to try this another way. Obviously, I'm not getting very far trying the adjustments recommended so far. I'm losing patience, not with this group of kind people, and in fact the only folks who actually showed an interest in trying to help me, but with the time taken trying to...

I understand, but I have a standard aneroid barometer I have been keeping near the unit, and I also calibrated it at the same time as the barograph, to the local weather station. Even it shows the BP a lot more closely than the barograph. Today, for example, the station reports BP of 30.32...

Hi Tom, By the curves not matching, I'm referring to the barometric pressure curve drawn over some hours by my barograph not matching the values of the local weather station, over the same time period. My curve never seems to go as high or as low as the station's. A week ago, I moved the pen...

Hi Tom, Not 32nd floor, I'm at sea level. The weather station I've been using is online and located about 5 mi away, also at sea level. The revised calibration procedure you've written above is actually what I've been trying. Just to be clear, the set pen screw moves the aneroid up or...