Kerry D. Wong – Page 3

Keithley 775A Programmable Counter TCXO Repair

In my last post, I did a teardown of the Keithley 775A programmable counter/timer. And while feeding a 10 MHz […]

I just picked up a Keithley 775A programmable frequency counter from eBay. Specification-wise, this counter is very similar to the […]

There are a lot of cheap electromagnetic radiation testers out there which boast some quite impressive claims. So I decided […]

While I was making a video on how to use HP 8671A as the frequency reference for an improved version […]

I recently received an M5Stack ESP32 development kit from Banggood. Although I have not used any ESP32 based development boards […]

Although LED light bulbs have been around for a while, I have not been able to totally replace all my […]

Differential amplifiers come in handy in applications where common-mode noise and interference are present in the system. This is largely […]

In my previous post, I did a teardown of an HP 8620C sweep generator along with an HP 86245A 5.9 […]

I just picked up an HP 8620C sweep oscillator with an HP 86245A 5.9 GHz to 12.4 GHz RF plugin […]

I recently bought an HP 8671A microwave frequency synthesizer on eBay. This synthesizer can generate signals from 2GHz to 6.2GHz […]

My video on the teardown of an HP 493A traveling wave tube amplifier had generated quite a bit of interest. […]

In my previous video featured on EEVBlog I did a teardown of an HP 493A microwave amplifier along with the […]

Big thanks to Dave Jones at the EEVBlog for featuring one of my teardown videos. His generosity would certainly help […]

Quite a few people had contacted me on the availability of the firmware for the Amrel PPS-2322 programmable power supply […]

As I mentioned in one of my posts a few years back, a color analyzer from the 80’s can be […]