playing with bits

Thoughts of a computer scientist focused on electronics.
VHDL, RF, DSP, PIC, Digital, Analog, plus anything I find interesting at the moment.

Wednesday, April 13, 2016

Counterfeit 2N3055 Transistors from eBay

›
I recently needed some 2N3055 TO-3 transistors for a project, but could not locate any around my basement, so I went ahead and carefully pur...
6 comments:
Thursday, April 7, 2016

HP 54503A NVRAM Replacement - DS1235YW to DS1230Y

›
A few weeks ago I turned on my HP 54503A to find it behaving strangely. While probing a circuit under test, I could not get any waveforms at...
1 comment:
Friday, September 11, 2015

10GHz Station Upgrades

›
With the 2015 September 10GHz and up contest approaching fast, I am in process of making some performance improvements to my 10GHz station. ...
Tuesday, June 16, 2015

Anritsu MF76A Repair - Part I

›
I recently acquired a nice Anritsu MF76A 18GHz frequency counter in a non-working state off of eBay. While older, this is still a very usab...
1 comment:
Monday, June 15, 2015

Decreasing Phase Noise with Low Noise Regulators

›
I have posted several times in the past on the PLL frequency synthesizer I designed and built based on the Analog Devices ADF4107. The overa...
1 comment:
Monday, May 11, 2015

Tektronix 2246 Repair Part II

›
In the process of debugging the strange intermittent display issue on my Tektronix 2246 after re-capping the power supply , things are not ...
1 comment:
Saturday, May 9, 2015

Tektronix 2246 Repair

›
Last year I had talked about how I accidentally destroyed my Tektronix 2246 oscilloscope by removing the cover. There was a small dent in ...
12 comments:
‹
›
Home
View web version

A computer scientist, hardware hacker, and embedded developer. KD8TBD

Brad
View my complete profile
Powered by Blogger.