| A proximity switch is one which requires your hand to be merely near it as opposed to on it to operate.
All items tagged with Switch and Time (40)
| The signal-controlled switch actuates or deactuates a.f. equipment, including preamplifiers, power amplifiers, and filters. It is partic...
| The circuit presented is intended primarily to limit the switch-on current drawn by lamps and other mains-operated appliances. This curre...
| Most of the new, fast current-feedback op amps have an enable input via which it is possible to switch the device on and off. Because of...
| The charger is designed to charge NiCd batteries with capacities of 150-4000 mAh. A potential 5 V higher than the nominal voltage of the...
| Most readers will be acquainted with a tone control as found on many audio amplifiers. Such a control normally consists of a potentiomet...
| Most satellite receivers provide a direct voltage at their coaxtat output which, depending on the plane of polarization of the set progr...
| 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...
| Halogen lamps are rightly popular because they give a good light and have an excellent efficiency. Unfortunately, they tend to be costly....
| If you ever need to derive a 5 V line from, say, a 15-25 V supply, National Semiconductors LM1575 and LM2575 are ideal. These switched 5-...