Hello everyone. I've been working on a small project using 2 LM386's I purchased from Radioshack, because to the best of my knowledge an LM386 can only amplify one channel of audio. I want to build it in a small wooden enclose, and for it to operate off of battery power.
This is the circuit I used:
Chapter 10: Computers and Electronics
I have built 2 amplifier circuits already, but I still need to build the enclosure and mount them, etc.
For the battery power, I would like to operate off of a supercapacitor or the like. I don't want to shell out for dozens of 9V batteries, and I like the fast charging qualities of capacitors. I read an article about building your own 9v battery replacement, but the link was missing:
SuperCap 9V battery - Hack a Day
I have found a 1000uF 11V capacitor, and was wondering how I would go about stepping down the voltage. Would an inductor work for something like this, or should I go with an integrated solution? I would like it to be as efficient as possible without going over a $20 budget.
My estimate to the current requirements of the current circuits are about 250mA to 350mA, but I have not measured it yet. If it is required, I can do it.
This is the circuit I used:
Chapter 10: Computers and Electronics
I have built 2 amplifier circuits already, but I still need to build the enclosure and mount them, etc.
For the battery power, I would like to operate off of a supercapacitor or the like. I don't want to shell out for dozens of 9V batteries, and I like the fast charging qualities of capacitors. I read an article about building your own 9v battery replacement, but the link was missing:
SuperCap 9V battery - Hack a Day
I have found a 1000uF 11V capacitor, and was wondering how I would go about stepping down the voltage. Would an inductor work for something like this, or should I go with an integrated solution? I would like it to be as efficient as possible without going over a $20 budget.
My estimate to the current requirements of the current circuits are about 250mA to 350mA, but I have not measured it yet. If it is required, I can do it.