| A simple switching clock which keeps one light on in the evening hours when you are not at home is no Ionger taken seriously as a burg...
| A simple switching clock which keeps one light on in the evening hours when you are not at home is no Ionger taken seriously as a burg...
| The circuit presented, although a simple design, guarantees a prompt and reliable indication of any form of water leak. It is hardly l...
| The main feature of the circuit is that it is very easy to construct. In addition, it has a very low price and is based on easily obtainabl...
| The Iogarithmic-to-Iinear converter in the Type NE604 chip (IC1) is used in the present design as an accurate S-meter for short-wave rece...
| The tester checks whether a transistor, n-p-n as weIl p-n-p , works or not. If it does. the buzzer emits a squeak.
| The Type 555 chip must be one of the most popular ICs used in electronics. Here it is used as a vco (voltage controlled oscillator). The...
| Connecting two computers that contain a modern card is straightforward as shown in the diagram. The setup makes dialling a telephone num...
| With many simple computers, hard copy printing can be time consuming. In that warning period, other work may be carried out. (Note: many...
| Based on a simple measurement principle and an inexpensive digital voltmeter (DVM) module, a simple capacitance meter is described that ca...
| The miniature size computer described in this short series of articles heralds a new era in DIY microcontroller development systems. The M...