Thus a signal can be switched on by passing it through a diode in forward bias, and then turned off by putting the diode into reverse bias. A simplified diode switch in the reverse biased Off ...

Using N-Channel MOSFETs to switch AC, sensing temperature changes with signal diodes, and even replacing a 555 with a blinking LED are just a few of the hacks covered in the video below the break.

If the signal is amplified, it is active. A special type of component is the integrated circuit (IC) where large numbers of transistors, resistors, diodes, and other electronic components are packaged ...