More about switch (472)

1-04-1979 | The advantage of this circuit for a touch activated switch is that it requires only one set of contacts and uses only two inverters, two res...

1-02-1979 | Imagine you are sitting in your living room, enjoying the compa-ny of a few friends, when you notice that evening is approaching and the day...

1-11-1978 | Only two CMOS-ICs are used in the generator described here, but in spite of its simplicity it offers a selection of 15 precisel...

1-07-1978 | Although there is a plethora of designs for touch switches, it is always a challenge to come up with a design that is simpler than previous...

1-06-1978 | Since the end of February, owners of stereo FM receivers will have noticed that the stereo indicator lamp stays on continuously. This is d...

1-05-1978 | Most of the timer I Cs which are commonly available provide only relatively short timing intervals. If longer delays, of say, from several...

1-09-1977 | Although modern audio amplifiers fre- quently sport an abundance of (seldom- used?) gimmicks, very few amplifiers possess compre...

1-07-1977 | Using a µA 739 dual, tow-noise op-amp it is a simple matter to construct a versatile preamplifier for a magnetic guitar pick-up...

1-07-1977 | Using two CMOS counters it is a simple matter to construct a versatile time switch. The total cycle time of the switch can be...

1-07-1977 | This ingenious touch switch is operated, not by skin resistance or capacitance effects, but by heat. The circuit utilises the neg...