A. Rietjens (66)

1-07-1994 | The buffer enables 'stretching' the signal of any infrared (IR) remote control. This makes it possible, for instance, to control a video...

1-07-1994 | Memory upgrades for PCs can present unexpected problems. For instance, if you are upgrading with 4-Mbyte SIMMs (single-in-line memory m...

1-07-1994 | Soldering is an unhealthy activity: when the tin melts it releases harmful vapours. lt is, therefore, advisable, to install a small 12 V...

1-07-1994 | In view of the popularity of generat purpose PICs (Peripheral Interface Controllers), two experimentation boards are presented: one far...

1-07-1994 | Infra-red remote control units for TVs and video recorders usually have a large number of press-keys to select a staggering variety of fun...

1-06-1994 | Time is money, and the shorter one has to wait tor an EPROM to be erased, the better. The circuit described here will save you time because...

1-04-1994 | This is an RS232 extension card for the Universal I/O Interface for IBM PCs.The circuit is based on the COM81C17 UART (universal asynchro...

1-02-1994 | The link between a PC and its peripherals is usually either parallel (Centronics) or serial (RS232). In some cases, however, it is necessa...

1-12-1993 | Philips'IC Type TEA1100 uses the deltapeak principle to charge NiCd and NiM3 battertes fast and effectively. The ask of the delta-peak ba...

1-12-1993 | The delay circuit ensures that a car's intertor light remains on for about five seconds after all the doors have been closed. This enable...