This circuit was found in a Modern Transistor Workbook from 1965. The circuit sends signals from a small record player to a medium-wave radio placed nearby.
This circuit was found in a 1980s telecommunications publication. The circuit uses a diode bridge to...
This circuit is from an English magazine from 1980, but it can be easily assembled with more...
The indicated circuit is an intermittent one in which we use two 555 integrated ones, one as a low...