开云体育

I got a 1kV voltage standard on eBay a while ago, and it just didn’t work properly: the series regulator transistor chain would always overheat and individual transistors drifted like crazy, their

I think I finally figured it out, and found info that may explain miscellaneous problems in the 8568, 8566, and other HP equipment. The sweep stopping problem disappeared for a while - running rock

Hi all, Its a little while since I received all four PSU modules. It seems to perform well. It draws about 200watts (or closer to 190watts when the ref osc is warm). The numbers from my uncalibrated

Thisis what I use to replace the NiCd in these

Hey y'all, my HP8643A signal generator suffered another failure recently so I had to go back into it (another tantalum, no big drama). After I'd been into it, it would re-calibrate after each time I

Speaking of failed adjustable capacitors...My new-to-me 8568B had been sitting unused for a long time; I picked it up as part of an EMI receiver setup (preselector, QPA, TEM cell, etc) and had just

Test failed. You gotta contact hp and buy the message test pack Enviado do meu Tele-Movel

It would be good to see pictures of the notches. However, even without seeing the pictures, I would say that this looks like a problem with the SYM adjustment on the 3 MHz filter board. If the problem

My 8566B continues to work well after more than 30 years. On the 300 Hz Res BW setting there is a 15 dB notch apparent at center frequency +1.2KHz, while on the 1KHz Res BW setting there is a 15dB

test

Reginald, Which Millivac Meter do you have, I have a MV-28 and Manual.I will be glad to copy the schematic if it will help.?Leon Robinson ?? K5JLR Political Correctness is a Political Disease.

I don't know how the GSP can be profitable. I sold some new diabetes monitoring kits on Ebay and a Japanese buyer bought them via GSP. They went through all the screening processes here in the? US,

Leo No I dont have a paper or digital copy at this time. What is driving the component changes? Please let us know when a schematic is available Dave -- Dave Manuals@... www.

Dave, I am still working on the final design - it is going through revision B6 already and I keep changing the components - but I have provided enough information and, hopefully, motivation for

Have a look at the head of the old Rohde & Schwartz NRS power meter --------------------------------------------

I started working on using 2N3904s for temperature sensors. A Brazilian wanted to build a sensor and as I had lots of experience with the 1D heat equation suggested a design that biased a resistor to

Folks, this is a gift which keeps on giving. Please allow me to schedule them for the week from the 13th of December. I will be away from my lab then, and need content! Leo: if it is OK for you,

Leo Are you going to post a copy of the schematic? ( maybe you already did and I just missed that email owner of a E4433B Dave NR1DX manuals@...

There are a whole bunch of pictures linked at the bottom of this, and the original posts. -Chuck Harris Tam Hanna wrote: ...

Hello, BIG thanks. Now all I need is a good picture of the IC, and I will run it for free!!! Tam With best regards Tam Hanna --- Enjoy electronics? Join 13700 other followers by visiting the