This generator is more complete than the previous one, being able to generate pulses as indicated in the table next to the diagram. In the original, a 556 was used which is a double 555.
This CMOS integrated alarm was found in the July 1992 Radio Electronics magazine. The circuit has...
This circuit is from an old American publication from 1977. Transistor Q1 can be a TIP42 and Q2 a...
This circuit was found in the National Semiconductor Linear Applications Handbook, published in...