A. Rigby (28)

| 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...

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

| This insertion card for IBM PCs and compatibles is the gateway to PC-based control of almost any type of equipment. Based on the familiar...

| 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...

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

| 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...

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

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

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

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