Paul Horowitz Doing Non-linear Chaotic Electronic Circuits

Demonstrating what a mixer is, amongst other things, see Ben Krasnow Identifying Chemicals by Nuclear Quadrupole Resonance. This was a lecture given around 2004.

You can get the circuit from the Wayback Machine: https://frank.harvard.edu/~paulh/misc/lorenz.htm It uses Texas Instruments MPY634 mixers and LF412 op-amps.

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