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Sea Murmur Simulator - bare PCB (140097-1)

The sound of waves breaking on the beach is considered relaxing by many people. It can be simulated with this easy-to-build modulated white noise generator featuring adjustable volume, wave shape and speed.

Prix 23,00 $US

Membres 21,00 $US

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The sound of waves breaking on the beach is considered relaxing by many people. It can be simulated with this easy-to-build modulated white noise generator featuring adjustable volume, wave shape and speed.
 
Note: The current up-to-date version of the PCB is V1.1 while the published article as based on V.10
Slight changes apply.
 

Change 1:  Ground on the power connector seems to be isolated

Explanation:     Ground pin is not isolated, but is connected to a complete ground shield copper on PCB.

 

Change 2:  Numbering of the transistors on the stencils.

Explanation:   Due to a revision 1.1 of this board, T1 and T2 were renamed T4 and T5 (both BC547)

 

Change 3: The stencils show BC547 whenre the suggested transistor is 2N3904

Explanation: This is upgraded in V1.1 of the board.

 

Change 4: The noise generator doesn't generate noise

Explanation: Check the position of your BC547 against the silkscreen on your PCB. 
If you want to use 2N3904 on V1.1 of the board, don't follow its silkscreen for T4 and T5.Collector and emitter are swapped. Y
ou will have to turn these 180 degrees on your PCB.

Réf. 18183
Constructeur Eurocircuits
Référence de rédaction 140097-1

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