The SLB0686A integrated circuit used in this application is not currently common. The circuit is from a 90s Elektor, applying only to incandescent lamps.
This simple electroscope with bipolar transistors is not the most sensitive, but can detect static...
Figure bellow shows how n flip-flops can be associated to perform a shift register. Data is...
This circuit was suggested by Analog Devices in 1980s documentation. The circuit has a grounded...