Found in a 1967 publication by General Electric, this control is intended for motors up to 2 A according to the SCR used. Higher current equivalent SCRs can be used.
This mono circuit for 10 LEDs was found in the January 1991 Radio Electronics magazine. It is...
In the figure we have a line receiver circuit (twisted pair) with the possibility of...
This circuit was originally designed for the practice of Morse code, something common in 1966, the year...