| Many cars are not fitted with fog lights and, what is more, there is often no provision for them. However, since in most European and Nor...
More about Switch (454)
| High-order filters are normally designed by using two or more 2nd order sections in series. This means that a 4th-order filter needs at l...
| Halogen lamps are rightly popular because they give a good light and have an excellent efficiency. Unfortunately, they tend to be costly....
| Most cars are provided nowadays with interior lighning that comes on automatically when one of the doors (or the tailgate of a hatchback)...
| The use of CW (morse) on a high-power transmitter/receiver presents a serious risk of burned antenna (coax) relay contacts or destruction o...
| Inductive proximity switches are used, for instance, for measuring motor speeds or determining the position of metal objects. They da not...
| If you ever need to derive a 5 V line from, say, a 15-25 V supply, National Semiconductors LM1575 and LM2575 are ideal. These switched 5-...
| Integrated voltage regulators LM317 and LM337 enable a simple, regulated, symmetrical power supply as shown in the diagram to be designed....
| Most debounce circuits shorten or lengthen the time a switch is pressed to obviate interference pulses caused by switch bounce. The pres...
| Any push-button switch can be used as a bounce-free, change-over switch with the aid of two D-type bistables contained in a 74HCT74 and...