![Interrogation lamp (or possibly a bicycle light) [140002-I]](https://cdn.xingosoftware.com/elektor/images/fetch/dpr_1,w_800,h_340,c_fit/https%3A%2F%2Fwww.elektormagazine.de%2Fassets%2Fupload%2Fimg%2Fpublic%2Foriginal%2Finterrogation-lamp-1.JPG)
| On discovering that my previous design based on a blocking oscillator and diac strobe pulser was a bit heavy on the battery, it seemed about...
| On discovering that my previous design based on a blocking oscillator and diac strobe pulser was a bit heavy on the battery, it seemed about...