All items tagged with oscillator and Alarm (9)

| Most bathtubs have an overflow pipe to prevent the bathtub from overflowing if you forget that you have opened the tap. However, disasters a...

| Simply forgot to water it – and then you can wave goodbye to that expensive bonsai. A pity about all the work that went into it… But this dr...

| Sometimes the need arises for a simple, gated, pulsed alarm. The circuit shown here employs just four components and a piezo sounder and is...

| 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...

| 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...

| The purpose of this one-chip circuit is to give an audible alarm in case a thief attempts to steal the car radio, which is generally conside...

| for home and garden A periodic alarm signal has many ap- plications in daily day life: "lights off" indicator in cars, water level in- dicat...

| hydro-alarm It is well known that plant growers with a large "collection" have to work very hard in order to prois- and causes pin 13 duce s...

| 7-28 elektor july/august 1980 37 1 universal warning alarm 3 ... 15 V 5 ... 20 mA v!rs. 0 61 ip Mc T R511 pH i1 used to pulse a second oscil...