About a year ago, I did a review and teardown of a Zotek ZT-702S handheld oscillocope/DMM combo device. Since then Zotek had released an updated version, the ZOYI ZT-703S. Compared to the 702S, the 703S added additional functionality: instead of…
In a recent video, I reviewed a Hantek TO1204D quad channel 200 MHz digital oscilloscope/DMM/AWG combo device. In this blog post, let’s take a look at some of the teardown pictures.
Over the last year, I have done teardowns of a few handheld scopemeters including a Hantek 2D72, an Owon HDS272S and an Owon HDS2102S. This time around let us take a look at this ToolTop ET829 3-in-1 handheld meter that…
Capacitor ESR (Equivalent Series Resistance) measurement is very useful in diagnosing issues with power supplies. In linear power supplies, a high ESR filter capacitor may cause excessive ripple current on the voltage rails and can cause the capacitor to overheat…
Last week, I posted a YouTube video explaining how to use a function generator to test an unknown transformer. I have received quite a few questions since so I thought I would explain this topic a bit more in detail…
I did a teardown of a BK Precision 4011 5MHz function generator a few weeks ago. Like most of basic function generators in old days, BK 4011 does not offer frequency sweep as an option. What it does include is…
I got a used BK Precision 4011 5MHz function generator recently. The 4011 model is rather old and this particular unit was manufactured back in 1996. But BK precision still makes a similar model (4011A) which is identical to the…