This circuit was found in the October 1994 issue of Electronics Now magazine. The 4046 PLL is not very common these days.
Found ina 1970 American documentation this fast-reading circuit uses a photodiode. Transistors...
This is a general purpose pramplifier launched in Brazil by Philips in the years 70. The BC549 is...
With the configuration shown in the figure, a common 12 V lamp lights up when light no longer...