We found this circuit in the November 1995 Electronics Now magazine. The circuit is more accurate than the previous one using an external multimeter as an indicator.
This is the traditional configuration of an unregulated bridge rectified power source. The circuit...
In the figure we have a circuit that produces interval pulses, reproduced in the piezoelectric...
Found in American documentation from the 90s, this circuit passes frequencies above 1 kHz. The...