This 1967 modeling circuit mimics the whistle of a locomotive. The steam-shrieking wheezing is set in a 2k2 potentiometer.
This circuit was found in documentation from the 1980s. The integrated circuit used is uncommon today...
This audio oscillator configuration appears in many of our circuits and even in this section from...
This Linear Technology circuit charges a battery from the energy produced by a wind generator that can...