More about buzzer (12)

3-10-2018 | Olivier Croiset's idea for an alarm clock with its 2.2" TFT display and available as a kit from Elektor, was designed to be simple to use –...

26-11-2014 | I find it pretty annoying when I use a multimeter and look at the display only to find out that I accidently disconnected the probe from the...

26-11-2014 | I find it pretty annoying when I use a multimeter and look at the display only to find out that I accidently disconnected the probe from the...

1-12-1998 | The familiar Type 555 can be used to switch currents up to 200 mA. Less well-known is its use as a latch with control input. When the in...

1-06-1998 | The conductance tester goes one step further than the usual continuity tester found in so many workshops. It contains a buzzer to indi...

1-03-1996 | The circuit based on transistors T1 and T2 forms a rectangular-wave generator. The values of resistors R2 and R3 and of capa citors...

1-07-1994 | The monitor is intended especially for force-cooled power resistore mounted on a heat sink. Such constructions are used, for instance, t...

1-12-1993 | The detector was designed primarily for use with quiz games. It indicates who has first pressed a push button by the sounding of a buzzer...

1-07-1993 | In speed chess a player has to make his move in 5-10 seconds. If he / she does not, he/she loses the game (depending on the agreed conven...

1-07-1993 | The continuity tester is based on the well-tried ~A741, which is used as a comparator that operates a buzzer at its output. The inverting...