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The thing is that most "zeners" do not depend on the Zener effect. That only occurs around voltages up to around 4volts, above 5v the process is Avalanche Breakdown , a bit like a gas tube. Then the

UV won't penetrate the glass. Try a visible-emitting part.

Actually I think the lowest temperature coefficient is around 5V for zener diodes.? The 6.2 V units are very stable also so you don't need as many of those. When you put zeners in series you invoke

Hi Dave, In theory, ~18x 4.5v zeners would provide the lowest drift reference for a pure-zener design. However, a single 82v zener has a tempo of around 0.073%. Compared to the 0.004% of the original

1.) There are some commercial Power Sensor Calibration packages out there that support the USB Sensors ( PS/CAL, Surecal)? but those are very expensive??? i am not aware of any free software that

Greetings, At least in the USA it is available from McMaster Carr (www.mcmaster.com<http://www.mcmaster.com>) 8" Not Rated Polyurethane Foam Gray 200° 30, 60

https://www.rapidonline.com/catalogue/search?query=Fan%20filters I think this page has what you want. Paul. G8AQA --- This email has been checked for viruses by AVG. http://www.avg.com

http://www.ebay.com/itm/172450940685 Air-Filter-Foam-Sheet-Black-anti-dust-60-PPI-15-PPI-thick-50mm-3mm-AD62-LW-/ has 3mm sheet, in many sizes. It ships from China. Two square meters is US $20.55.

In the USA perhaps where most places have air-con and even hardware stores!!! Sadly “the local hardware store” is long gone over here … I’ve never seen anything like it in the “DIY” stores

Local hardware store, a couple of dollars for a huge piece.

Darn! Thank you, that's the stuff! The magic incantation seems to be computer dust filter! Thanks again Dave From: hp_agilent_equipment@... [mailto:hp_agilent_equipment@...]

Something like this? http://www.ebay.co.uk/itm/PC-Computer-Fan-Dust-Proof-Filter-Foam-Sheet-3mm-Thick-50cm-x-50cm-2500cm-/111895723834

About 2-3mm (maybe as much as 1/8") thick fairly open mesh, I've searched eBay for air filter sheet failed to find anything suitable. Used on the air inlet where the fan exhausts the unit. What's this

I am in need of a 08757-60066 mother board for a 8757C. The 8757C that I bought cheap had a CPU battery leak and has made a mess of the motherboard. Before I remove, clean and rebuild the traces on

Replacing the ZZ1000 - My Summary. A high-voltage zener will add a lot of drift. It's a hassle to ovenize it. Nine 9V zeners is better but still pretty bad. To meet spec you have to use what HP used,

Hi from down under. From memory I used an 8.2K 1 watt resistor as that is what I had on hand. Also placed 68V and 14V zeners in series to make the necessary 82V level and again this is what was in

Hi: My HP 4050N with Duplex option got erratic so, after some research, got an HP LaserJet Pro M501DN (with Duplex and Networking). After some problems that were fixed by upgrading the printer

Always thought it was funny that the HP 8150 and the Lexmark Optra N are almost exactly the same - only the control panel is different. [hp_agilent_equipment] <hp_agilent_equipment@...>

Depends on whether it's been rehabbed. Think the fuser is rated for 60k. Service manual shows intervals. The bay shows many units for sale with 200k+. Starting at $200. Think I paid 75$ for a complete

Okay I got the page count.? It's 56110.? Is that a high or low figure? Bob