More about switch (472)

1-07-1991 | The adapter allows you to program the 27C1001 EPROM which has a capacity of 1 bit organised as 128 Kbyte x8. To be able to use the prese...

1-07-1991 | This electronic switch is designed to be connected direct to the mains, which obviates a low-voltage supply and so keeps the cost and sp...

1-07-1991 | Switches with change-over contacts with traditional debouncing circuits are not always usable or economical. Keyboard switches, for inst...

1-07-1991 | Normally, a Wien bridge oscillator contains two identical capacitors and two iden tical (variable) resistors. That being the case, the t...

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 | If you have a non-qwerty keyboard and would like to use this with your computer without having to reIearn where the deviating keys are, this...

1-07-1991 | The pump in sorne central-heating systems has two or even three speeds. At the lowest speed, not much hot water is pumped around the cir...

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 | A frequent annoyance with battery-operated equipment is that just after you switch it on you notice that the battery is fIat. Quite proba...

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...