|Number of Pages||280 Pages|
Timer Circuits used to be a lot of trouble to build and tame for several reasons. One major reason was the fact that DC power supply variations would cause a frequency shift or slow drift - modern timers are designed to permit a wide variation in the DC supply voltage without affecting the output frequency or single-pulse duration. Another reason is that the equations determining the frequency or timing were little more than approximate, despite the appearance of great precision in the textbooks - modern timers will work very closely to the way the textbooks say they do. Electronic Circuit Guidebook, Volume 2: IC Timers will show you how it is done.