We’ll turn the simple unity-gain buffer of last session into a single-pole active lowpass filter with a single part. (Spoiler: it’s a capacitor.) While totally useful, this simple filter is a ...

Fundamentals of analog filter design and linear circuits are covered in a book and kit of parts that are available on EIM ...

Once you’ve torn one or two down though, the novelty must wear off, which is where this radiosonde conversion to an active L-band antenna comes from. As it happens, we recently discussed the ...