I have had a search through and there are plenty of threads making use of the LM386 to amplify the sound output from a PICAXE. However I like to be difficult, and I have some spare op-amps on an LM224.
As it stand there is a single op-amp used for a photodiode light detector which works great, and was thinking that I should either put the other three to use of find a single supply single unit op-amps package.
I have tried a basic single op-amp non inverting (2 resistors, 1k from inverting input to ground, 100ohm from output back to inverting input) amplifier connected to a 0.2w speaker, this is fine but not greatly louder than just the picaxe running it.
I am no analogue circuit master I suspect that there are some here who have dabbled in this sort of thing who can point in the right direction. A net search shows up lots of option for dual rail amplifiers but no much in the way of single rail.
I have a couple of 1W 80ohm speakers from an old computer monitor which would be great to use, although I am aware more voltage maybe needed, ruling it out as an option
As it stand there is a single op-amp used for a photodiode light detector which works great, and was thinking that I should either put the other three to use of find a single supply single unit op-amps package.
I have tried a basic single op-amp non inverting (2 resistors, 1k from inverting input to ground, 100ohm from output back to inverting input) amplifier connected to a 0.2w speaker, this is fine but not greatly louder than just the picaxe running it.
I am no analogue circuit master I suspect that there are some here who have dabbled in this sort of thing who can point in the right direction. A net search shows up lots of option for dual rail amplifiers but no much in the way of single rail.
I have a couple of 1W 80ohm speakers from an old computer monitor which would be great to use, although I am aware more voltage maybe needed, ruling it out as an option