Hi again,
I am designing a headphone amplifier to fit inside my guitar and I would like not to add any more external controls. This is so I can plug my headphones (or speakers designed for a 3.5mm jack) straight into the guitar.
I'd like to be able to power it on and off but just plugging in the headphone jack. There are plenty of 3.5mm jacks out there with switching mechanisms, but they are all push to break, and usually involve the actual left/right channels in the switch circuitry (e.g.).
So, this would need a circuit running constantly to check whether this contact has been broken, which then turns on the whole system. My question is;
Has anyone ever coma across a push-to-make switch in 3.5mm jack (so I can just run the power supply through it), or, can anyone think of a more elegant or reliable way of detecting the presence of a plug, than a normal, stereo plug with a tactile switch super glued onto the end (which would eventually fall off).
As always (with me at least ) there are size and budget constraints, but I shouldn't think they'd be too much of an issue here as, these type of parts are very small anyway.
Thanks, in advance.
David.
I am designing a headphone amplifier to fit inside my guitar and I would like not to add any more external controls. This is so I can plug my headphones (or speakers designed for a 3.5mm jack) straight into the guitar.
I'd like to be able to power it on and off but just plugging in the headphone jack. There are plenty of 3.5mm jacks out there with switching mechanisms, but they are all push to break, and usually involve the actual left/right channels in the switch circuitry (e.g.).
So, this would need a circuit running constantly to check whether this contact has been broken, which then turns on the whole system. My question is;
Has anyone ever coma across a push-to-make switch in 3.5mm jack (so I can just run the power supply through it), or, can anyone think of a more elegant or reliable way of detecting the presence of a plug, than a normal, stereo plug with a tactile switch super glued onto the end (which would eventually fall off).
As always (with me at least ) there are size and budget constraints, but I shouldn't think they'd be too much of an issue here as, these type of parts are very small anyway.
Thanks, in advance.
David.