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Toy Organ(NE555)

2017-08-05 16:49  
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This article briefly describes the Toy Organ (NE555). This principle is easy to understand, but also very practical. Depth understanding of circuit elements, you can better grasp this principle. In this circuit, you can learn about and purchase these components: NE555.

This circuit produces a tone according to the button being pressed. Only 1 button can be pressed at a time, that’s why it is called a monophonic organ. You can change the 1k resistors to produce a more-accurate scale.

Figure:1 Circuit diagram

Figure 1 Circuit diagram

Parts:

R1-4 1k Resistor
R5 4.7k Resistor
P1 10k Trimpot (Potentiometer)
S1-5 Switch
C1 100n Capacitor
C2 10 Electrolytic Capacitor
SP1 8Ohm Speaker
555 NE555

 

 


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