Kerry D. Wong – Page 15

A Simple Serial Protocol

We can send and receive commands wirelessly with Arduino by using these cheap RF data link transmitters/receivers. I like these […]

I bought a couple of Peltier cooler modules on eBay a while ago for some experiments. Of course, as I […]

In part 1 of this series of blog postings, I showed my preliminary design of a dual tracking linear power […]

In my previous post, I showed my design of a dual tracking ±30V linear power supply. My goal was to […]

Power supply is one of those things one can never have too many of. I have quite a few already, […]

A while ago, I built a precision voltage adapter using LMP8358. In this post, I will show you a similar […]

A while back I built a simple constant current electronic load using an aluminum HDD cooler case as the heatsink. […]

TI’s TLV5620 is a budget 4-channel 8-bit DAC. While it is designed primarily for running with a power supply between […]

Arduino‘s (ATmega328P) PWM outputs via analogWrite can be conveniently turned into analog voltage levels through the use of simple RC […]

One of the things I love to buy from eBay is linear power supply. Labs and industries routinely clear out […]

In my previous post, I showed my design of a semiconductor V/I curve tracer and discussed its theory of operation […]

Semiconductor curve tracers were frequently used in analog circuit designs many decades ago, at a time when discrete semiconductor devices […]

Most offline/line interactive UPS‘ (Uninterrupted Power Supply) have a transfer time between 5 to 15 milliseconds. In this post, I […]

I love old Tektronix analog oscilloscopes and I could not seem get enough of them. So when I saw a […]

I typically use linear regulators (e.g. 7805, LM317, etc.) in my projects. Linear regulators (especially the low dropout ones) are […]