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In a buzzer speaker, current is run through a coil of wire that produces a magnetic field. The flexible ferromagnetic disc is attracted to the coil when current is flowing through it and returns to a “rest” position when current is not flowing through the coil. The sound from the buzzer speaker is produced by moving a ferromagnetic disc in a similar way to a cone in a speaker.

Small audio speaker ideal for radio and projects including amplifiers. Diameter is only 57mm and yet it provides enough power.

A fuse that we use in our devices that are connected via the USB port on the computer. Automatically stops when the power flowing through it is greater than 500mA, and type is a quick blow. This is actually a silicon fuse, which, when interrupted, after a few minutes returns back to the state in which it conducts electricity – no need to change the fuse!

Are you repairing or developing electronic boards? This set of inductors is incredibly useful because you will never have to think again if you have that specific inductor. It consists of 52 different values each of which comes in an amount of 50 pieces.

• Package: 0603
• 25 pcs of 52 values = 1300 pcs
• Values [H]:

1nH,    10nH,  100nH, 1uH,    10uH
1.2nH, 12nH,  120nH, 1.2uH, 12uH
1.5nH, 15nH,  150nH, 1.5uH, 15uH
1.8nH, 18nH,  180nH, 1.8uH, 22uH
2.2nH, 22nH,  220nH, 2.2uH,
2.7nH, 27nH,  270nH, 2.7uH,
3.3nH, 33nH,  330nH, 3.3uH,
3.9nH, 39nH,  390nH, 3.9uH,
4.7nH, 47nH,  470nH, 4.7uH,
5.6nH, 56nH,  560nH, 5.6uH,
6.8nH, 68nH,  680nH, 6.8uH,
8.2nH, 82nH,  820nH, 8.2uH,

In a buzzer speaker, current is run through a coil of wire that produces a magnetic field. The flexible ferromagnetic disc is attracted to the coil when current is flowing through it and returns to a “rest” position when current is not flowing through the coil. The sound from the buzzer speaker is produced by moving a ferromagnetic disc in a similar way to a cone in a speaker.

A buzzer is a small speaker (actually a piezo). We all know how a speaker works, so no further explanation is needed. This is a passive buzzer that requires an AC signal to produce a sound. It’s like an electromagnetic speaker, where changing the input signal produces sound, rather than automatically producing a tone.

A buzzer is a small speaker (actually a piezo). We all know what the speaker does, so no further explanation is needed. This is an active buzzer that will generate a tone using an internal oscillator, so all that is needed is a DC voltage.