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Electronic Metronome Electrical Circuit Diagram (BAT43)

2014-11-15 08:06  
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This article describes the Electronic Metronome Electrical Circuit Diagram (BAT43). The content is very simple, very helpful. Components in this article can help you understand better understanding of this article. For example, in this article, you can go to find and buy these components:BAT43.

Metronome is very important tool if you studying music playing. There are mechanical metronome device in the past, but today, electronic metronome is much more popular since it can be very simple, compact/small, reliable, and also has the most interesting feature: cheap. Here is one example of the electronic metronome schematic:

electronic metronome circuit diagram

Parts:

A variable current source is built around Q1 and Q2, this provides linear scale that can be directly mapped to the potentiometer position.? Transistor Q3 is employed to amplify the signal to get louder click sound, similar to clockwork metronomes.? To obtain more output power and more compact package, a 12V micro battery was used.? Don’t worry if you can’t get the battery since it works also for 9V battery.? Rotate P1 fully towards R2, then set R1 to obtain 40 beats per minute (compare with another metronome). Rotate P1 fully towards R3, then set R4 to obtain 208 beats per minute.

Finally mark the entire scale with the common metronome steps as following:
40 – 42 – 44 – 46 – 48 – 50 – 52 – 54 – 58 – 60 – 63 – 66 – 69 – 72 – 76 – 80 – 84 – 88 – 92 – 96 – 100 – 104 – 108 – 112 – 116 – 120 – 126 – 132 – 138 – 144 – 152 – 160 – 168 – 176 – 184 – 192 – 200 – 208.

 


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