image: The bottom‐up design principle of universal genetic circuits across diverse microbial species. view more . Credit: QIN C, XU T, ZHAO X, ZONG Y, ZHANG H M, LOU C, OUYANG Q, QIAN L.

Today I am experimenting with a single chip Universal Active Filter, in this case I made a small PCB for the UAF-42 from Texas Instruments. I chose this part in particular as it facilitates setting… ...

The state variable filter is composed of the opamps A2, A3 and A4. The potentiometer adjusts the bandwidth of the filter. The potentiometer P2 adjusts the center frequency of the filter from about 200 ...