The Maplin Electronic Circuits Handbook, 2nd Edition

30 PASSIVE COMPONENTS

Input

I

HI Ο

Output

Figure 1.23 C-R

'differentiator

Either of these circuits can be used in conjunction with some form of

voltage sensitive circuit to provide a reasonably accurate time delay. Where

continuous (or 'astable') operation is required, it will be necessary to

discharge the capacitor at the end of each timing period (see Chapter 7

for further details).

Another application of simple CR networks which is directly attributable

to their charge/discharge characteristics are the simple waveshaping

circuits shown in Figures 1.22 and 1.23. These circuits function as

'square-to-triangle' and

4

square-to-pulse' converter ...