This is the transmitter for a remote-control system published in the August 1986 issue of Radio Electronics magazine. The circuit uses two 555 CMOS transistors to drive two series LEDs.
This circuit was obtained in an old Elektor. It is a reference, since the integrated products of the...
The trigger shown in the figure, built around a 4093 can generate pulses that reach 1 hour with a...
This circuit has the transistor chosen according to the maximum current desired at the output. Unlike...