Instead, it demonstrates a procedure by which any resonant piezoelectric transducer or buzzer can be driven to high acoustic ... It can be difficult to duplicate the acoustic/electrical circuit ...

Save guides, add subjects and pick up where you left off with your BBC account. Electrical energy flows around circuits which are loops made of metal wires. In this game, touching the wire with ...

such as a buzzer, flashing light, or annunciator. • A power-limited circuit is supplied by a transformer or other power source that limits the amount of power to provide safety from electrical shock ...

This Simple circuit can be used to Guard your bike from ... When C1 fully charges T1 conducts and triggers the SCR. Buzzer connected to the Anode of SCR gets electrical path and it sounds the alarm.

The flashing is thanks to LEDs with a built-in, integrated flashing circuit and the nasty noise comes from a piezoelectric buzzer — both are available from electronics stores that sell ordinary ...