This oscillator uses a 2N3904 NPN, a 2N3906 PNP, a 27 mH coil , 9 volt lamp, resistors as shown.........................................
.......................
This oscillator flashes at about 1Hz ,
I built it and it is flashing right now as I look at it.
.....................................................................
In real it doesn't spike like the simulation does. Shake it..............
