Hi all , heard great reports about the Dub Siren , ive downloaded the Schematic but can anyone point me in the right direction as to where Pin3 of U1 goes , it seems to be floating , is this correct or am i missing something.
http://www.interruptor.ch/sirenschematic.doc
Thanks in advance JT.
1st Attempt at Dub Siren
Moderator: interruptor
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U2 for Dub Siren Schematic
Hello,
I am new here, have been looking to make the dub siren posted on here. Can anyone help with what chip the U2 is? I'm assuming its a standard op-amp where the positive and negative pins match those of on the schematic?
If anyone could help that'd be wicked,
Also the +10V supply, could this be supplyed by a 9v battery instead of trying to look for a 10V one?
thanks for your time and any help is greately appreciated,
mini_scrubber
I am new here, have been looking to make the dub siren posted on here. Can anyone help with what chip the U2 is? I'm assuming its a standard op-amp where the positive and negative pins match those of on the schematic?
If anyone could help that'd be wicked,
Also the +10V supply, could this be supplyed by a 9v battery instead of trying to look for a 10V one?
thanks for your time and any help is greately appreciated,
mini_scrubber
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- Posts: 1
- Joined: Sun May 06, 2012 5:04 pm
- Location: uk
i've just finished building this dub siren, will post up some pics and maybe some samples when i'm back home. altogether a quite basic sounding device, just a squarewave i think, but a fun project.
i used a 9v battery with mine, works fine. for u2 i used a tip120 op-amp that i had lying around. and yes jtabroad, pin 3 on u1 goes nowhere.
only the frequency control was working for me at first but rechecking and fixing my mistakes sorted that out. try adjusting the pots which don't seem to do anything, it might just be changing the tone very slowly?
the depth control of my siren only does a semitone though.this could be altered by using different resistors in there perhaps.
peace
i used a 9v battery with mine, works fine. for u2 i used a tip120 op-amp that i had lying around. and yes jtabroad, pin 3 on u1 goes nowhere.
only the frequency control was working for me at first but rechecking and fixing my mistakes sorted that out. try adjusting the pots which don't seem to do anything, it might just be changing the tone very slowly?
the depth control of my siren only does a semitone though.this could be altered by using different resistors in there perhaps.
peace