good news I have found a source of cheap smd components
3.3r x5= $0.012 100k x3= $0.0072 20k x1= $0.0016 680nf x4= $0.26 220nf x4= $0.0092 220uf electrolytic x2= $1.23 1uf x5= $0.03 1nf x8= $0.024 100nf x3= $0.002 10nf x5 = $0.036
all transistors and compaciters have been included total price AU $1.60
yet to find suitable cheap smd 10uh inductors
the tpa3116d2 amp chip will cost $27.56
total 29.16
soldering iron will have to wait a few weeks because life is interfering
I will check this thread as much as possible but things are a bit hectic at the moment hint end of semester exams and piles of homework
I will start building amp 12/8/2013 until then good luck with the rest of you and way every amp work first shot
3.3r x5= $0.012 100k x3= $0.0072 20k x1= $0.0016 680nf x4= $0.26 220nf x4= $0.0092 220uf electrolytic x2= $1.23 1uf x5= $0.03 1nf x8= $0.024 100nf x3= $0.002 10nf x5 = $0.036
all transistors and compaciters have been included total price AU $1.60
yet to find suitable cheap smd 10uh inductors
the tpa3116d2 amp chip will cost $27.56
total 29.16
soldering iron will have to wait a few weeks because life is interfering
I will check this thread as much as possible but things are a bit hectic at the moment hint end of semester exams and piles of homework
I will start building amp 12/8/2013 until then good luck with the rest of you and way every amp work first shot
I have found an iron with 12 bits and a heat gun for $112
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but it will have to wait a while, by for know
Trex,
Not sure if TI will ship samples to Australia but if you request a few samples through TI's website, they provide samples free of charge. They use FedEx so it should not be a problem. You should ask for some TPA3118D2's while you are at it. Same chip with lower 30 w rating and selectable osc freq. You got a good deal on all those components. They cost $9 from Digikey. What source are you using eBay?
Not sure if TI will ship samples to Australia but if you request a few samples through TI's website, they provide samples free of charge. They use FedEx so it should not be a problem. You should ask for some TPA3118D2's while you are at it. Same chip with lower 30 w rating and selectable osc freq. You got a good deal on all those components. They cost $9 from Digikey. What source are you using eBay?
Thanks! The nice thing about perf board is it lets you try different layouts before you commit to soldering. You just install the components through the holes and bend the legs but dont cut them. Once you like your layout then you can cut. I used the component wires as much as possible underneath the board to make the connections, sometimes taking them up the breakout board before cutting. Very DIY friendly.
The break out board to go from 32 pin smd to dip for $2 recommended by Mguntrum is a very good deal.
TSSOP to DIP adapter 32-pin 0.65mm pitch
Should make it a perf board build.
TSSOP to DIP adapter 32-pin 0.65mm pitch
Should make it a perf board build.
I might buy it if my board making ideas don't work because part of my idea involves making the chip solder mounts
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yes I'm using ebay and realistically the components cost $178 for the lot but because I'm buying bulk its really cheap between 30000 and 50000 individual components at less than $0.001 each I thought was a bargain for the amount if I had of bought exactly the right amount of components I could have easily spent more and I would have spent triple that amount ordering from jaycar or AZtronics which is our nearest electronics components seller around 700km 434miles approx. and neither seem to sell smd components when I looked.
I will also have a look on TI's website and see about a free sample
simple, good working and good sounding class d amp, ideal for educational purposes: 555 Class D Power Amplifier [130144-I] | Elektor Labs
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