The purpose of the strobe circuit in this sensor amplifier is to reduce consumption. The circuit is from old documentation (1970s), but the idea can be used in modern applications.
We do not know exactly what sound a flying saucer makes, or if it makes a sound! But this is not...
This circuit was published in an English magazine from 1977, but it can be easily assembled since...
This circuit for modeling was found in a 1980s documentation. The SCR can be the TIC106 and the...