All items tagged with Switch and Time (41)

1-12-1992 | Integrated voltage regulators LM317 and LM337 enable a simple, regulated, symmetrical power supply as shown in the diagram to be designed....

1-12-1992 | Most debounce circuits shorten or lengthen the time a switch is pressed to obviate interference pulses caused by switch bounce. The pres...

1-07-1992 | 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...

1-12-1991 | This circuit meets the requirement for a simple, low-cost timer with a timing range of a less than a second to several tens of hours, and...

1-12-1991 | Here is an interesting circuit for all Amiga owners who object to having to disconneet the mouse every time a second joystick is required...

1-12-1991 | Binary-coded-decimal (thumb-wheel) switches are not only relatively expensive, but are also often not available to the wanted specificati...

1-12-1991 | The switch described has two time ranges that are selected with a push-button. In the prototype, the ranges were 5 minutes and 20 minutes...

1-12-1991 | When a bicycle speedometer must be rugged, accurate and, above alt novel and a Iittle unusual, the 'high-rech' computerized LeD units fou...

1-12-1991 | Rectifying the buzzer signal on a telephone line results in a voltage that may be used to switch one or more loads, for instance, a light...

1-12-1991 | Overcharging of batteries is prevented by the timely switching off of the charger. A timer that can be set to within a minute can be bui...