More about alarm (136)

1-07-1993 | The receiver is intended primarily for use with the remote control UHF transmitter described in the proceding article. It is a super-rege...

1-12-1991 | Having a recent arrival in the family meant that some form of baby alarm or monitor was required if 'junior' was not to 'wah' unduly in h...

1-09-1991 | A fire may be started by an unstubbed cigarette-end, a faulty electrical appliance carelessly left on, or lighted paper shoved through the...

1-07-1991 | In this somewhat unusual digital voltmeter, the measurand (voltage to be measured) is digitized in an analogue-todigital (A-O) converter...

1-09-1990 | The circuit described here is a car theft deterrent that locks the starting motor until a pre-programmed code is recognized.

1-07-1990 | These days, an increasing number of lorries and buses is filled with loud sirens and other actuators to warn pedestrians that the vehic...

1-07-1990 | The Type U450B integrated circuit from Telefunken is a tone sequence generator for applications in toys and electronic household utensils...

1-11-1989 | INTRUDER ALARM In today"s society, it makes good sense to provide some form of intruder alarm system in the home, if for no other reason tha...

1-07-1989 | 041 CAR ELECTRONICS The car alarm accepts signals from a variety of sources, includ- ing special sensors and the standard switches in a car,...

1-07-1989 | 055 HIGH-VOLUME ALARM When this alarm is actuated by a low-level signal at input W, the (FiF) loudspeaker produces a number of 4-tone sequen...