| This simple circuit offers model railway enthusiasts a cheap alternative to the fairly expensive block section controllers which are availab...
| This simple circuit offers model railway enthusiasts a cheap alternative to the fairly expensive block section controllers which are availab...
| This transistor tester is not intended as a fully-fledged measuring instru-ment; it can be used when a general indication is required of th...
| This transistor tester is not intended as a fully-fledged measuring instru-ment; it can be used when a general indication is required of th...
| Although not exactly revolutionary, the circuit shown here is both very cheap and reliable. The well-known 555 timer IC is connected as an a...
| Although not exactly revolutionary, the circuit shown here is both very cheap and reliable. The well-known 555 timer IC is connected as an a...
| Sun I ight is now recognised as an important source of `alternative` energy, and the use of solar panels to convert the sun`s rays into elec...
| Dynamic Noise Limiting (DNL) is a noise reduction system patented by Philips, which is particularly useful for the reproduction of (cassette...
| Generally speaking, resistors with a 5% tolerance are more than adequate for most of the circuits published in Elektor. However from time to...
| An annoying drawback of many liquid level sensors is the effect of electrolytic reaction between the liquid and the sensors. Metal electro-d...
| An annoying drawback of many liquid level sensors is the effect of electrolytic reaction between the liquid and the sensors. Metal electro-d...