| When a battery is charged by a solar panel during the day, it may discharge via that panel after sunset. This may, of course, be prevente...
More about Switch (454)
| Because of their inertia, power consumption, contact wear, and often size, relays are not really suitable for switching alternating volta...
| Nowadays, several manufacturers produce ICs that combine an infra-red receive LED with associate amplifier and demodulator. The Type SFH5...
| This is one of the simplest twilight switches ever published in this magazine. When it gets dark, the value of light-sensitive resistor R...
| The timer, based on EXAR'S Type XR2240, is intended for use in photographie and printed-circuit departments, as a standby switch for 1 V...
| Now that the camcorder is here to stay as the mobile complement to the trusty video recorder, a problem has come about: selecting between di...
| Many games, utilities and other application software for the Atari ST computer are supplied as ROM / EPROM modules ('cartridges') of which...
| Many motorcycles have the facility that as soon as the igrutton is switched on, their dipped headlights (or day running lights) corne on....
| The touch switch is based on a Schmitt trigger with hold contact, which is built from IC(1a), IC(1b) and R3. The output of IC(1b) is fed...
| The power off circuit ensures that the load is automatically removed from a battery. Itis particularly useful in cars, so that if the dri...