Found in an Electronic Design from the 90s, this circuit makes use of contemporary components, including the pressure sensor. Modern equivalent components can be used in a new project.
Indicated by Popular Electronics to be used with a car headlight, this circuit can also have...
In this circuit of a 1970s publication, data from the coil to oscillate at the desired frequency...
This circuit was obtained from a Philips documentation from 1968. The transistors can be replaced...