A. Rigby (28)

1-07-1991 | This 8-bit bus extension card for IBM PCs and compatibles allows you to eonnect and test insertion cards without having to open the comp...

1-07-1991 | Many people still use the old C64 computer to play games on, but get frequently annoyed by the constant need of changing over the joysti...

1-07-1991 | The circiut presented here enables the automatic switching on of outside lighting when its gets dark and, what's more, it does so for a...

1-07-1991 | The timer is intended to actuate an apparatus for a predetermined period of time, for instance, an ultra-violet exposure unit or a photo...

1-06-1991 | Ni-Cd batteries are now used in so much everyday equipment that most households need at least one suitable charger. The one presented her...

1-06-1991 | LIGHT SWITCH WITH TV REMOTE CONTROL Why not use the infra-red remote control, that magic little box supplied with every TV set these days, f...

1-05-1991 | Those were the days when you could use your Commodore C64, Acorn Atom or 2x81 computer to control hardware intelligently. Model train syst...

1-12-1990 | As you are probably aware, measuring small resistance values is difficult, if not impossible, with conventlonal digital and analogue multi...

1-12-1990 | The bridge circuit is intended for those cases where two unequal supply voltages are required.

1-10-1990 | The telephone exchange presented here allows up to eight pulse-dialling telephone sets to be connected, and has an option tor connecting c...