Precision
Building a low-cost, precision digital oscilloscope – Part 2
Editor’s Note: In this DI, high school student Tommy Liu modifies a popular low-cost DIY oscilloscope to enhance its input noise rejection and ADC noise with anti-aliasing filtering and IIR filtering. Part 1 introduces the oscilloscope design and simulation. This part (Part 2) shows the experimental results of this oscilloscope. Experimental Results Three experiments were…
Building a low-cost, precision digital oscilloscope
Editor’s note: In this DI, high school student Tommy Liu modifies a popular low-cost DIY oscilloscope to enhance its input noise rejection and ADC noise with anti-aliasing filtering and IIR filtering. Part 1 introduces the oscilloscope design and simulation. Part 2 will show the experimental results of this oscilloscope. A digital oscilloscope is one of…
A precision digital rheostat
Rheostats Rheostats are simple and ubiquitous circuit elements, usually comprising a potentiometer connected as an adjustable two terminal resistor. The availability of manual pots with resistances spanning ohms to megohms makes the optimum choice of nominal resistance easy. But when an application calls for a digital potentiometer (Dpot), the problem can be challenging. Wow the…
WEP 982 III Precision Soldering Station Review: Putting the heat where you need it
Finding the best soldering iron or soldering station is subjective. I can tell you what I like, point you in the direction of a good choice, but ultimately it is how it feels in your hand that matters. I started soldering professionally with an Antex XS25. This simple soldering iron had no temperature control. but…