Electronics – Page 15 – Kerry D. Wong

Constant Current Dummy Load In an HDD Cooler

Basic constant current dummy load using an Op Amp and a by-passing MOSFET is very easy to build and had […]

I got myself a Raspberry Pi (Model B V2) last month. After having played with it for a while, I […]

A typical 3 ½ or 4 ½ multimeter can measure voltage in the low mV range and current in the […]

It is well understood that resistors are typically binned in such a way that for a given tolerance the actual […]

I bought a used Keithley 196 bench multimeter a few weeks ago. This is a 6 ½ digit 3,030,000 counts […]

I have been mainly using perf-boards for my electronics projects. Since most of the stuff I build are not very […]

For current measurement in the low micro-amp and nano-amp ranges, a feedback ammeter is usually an excellent choice (see Keithley […]

I have a few Western Digital WD1001FALS 1 TB hard drives and they have been pretty reliable for the past […]

I did a review on Topward’s 6603A linear power supply last time. In my opinion, Topward 6000 series power supplies […]

I bought a used Topward 6603A lab power supply from eBay a couple of weeks ago and thought I would […]

Simple slave camera flash (or synchronous flash, like this one I built earlier) works great with older film cameras, but […]

I picked up an AD9850 DDS module on eBay an couple of weeks ago and decided to build a MCU […]

I have created a dedicated page for the MCP2210 library documentations. An link to the reference can also be found […]

During the past few weeks, I have shown many examples (see 1, 2, 3, 4) of using the open source […]

A couple of weeks ago, I showed an example of using the open source MCP2210 Library I created earlier to […]