Posts tagged ‘LM393’

Visualizing Comparator and Op Amp Hysteresis

Hysteresis can be added to a comparator circuit to improve its stability, especially when the input signal is noisy. In this post, we will examine the hysteresis characteristics of some common comparator and Op Amps using an oscilloscope. Continue reading ‘Visualizing Comparator and Op Amp Hysteresis’ »

Adding a Fan Controller to Topward 6603A

I did a review on Topward’s 6603A linear power supply last time. In my opinion, Topward 6000 series power supplies are really well made and offer exceptional performance. One minor annoyance though, as I mentioned, is that the two cooling fans are constantly on. This makes the otherwise great piece of lab equipment rather noisy, even when the load is light. Continue reading ‘Adding a Fan Controller to Topward 6603A’ »