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    Class D Bass amplifier

    Hey guys! I recently finished my first larger project (in a long time!) As Hero will probably remember, I was considering building a Class D Bass amplifier! Well I have done so and completed it now. Spec: 240v Input, Dual laptop supply-age! 170w Output (Theoretical) +/- 24v PSU Based around...
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    What will I use?

    Hey, do you know the transmitting frequency of the camera? (Probably 2.4ghz?) If so, you could probably use two directional antennas. Take a look at this article :) http://scitoys.com/board/messages/9/2306.html?1151588641
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    Class D amplifier (different kind :)

    Cheers audio, I did mean what you said, sorry! To be honest... I would actually be prepared to use a class D IC but I find this area of electronics so interesting in how you can get such high efficiencies from such a well theoretically quite simple circuit and I am quite interested to learn...
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    Class D amplifier (different kind :)

    Thats perfect hero, thank you :) Instead of creating a ne thread, i'd also like to ask: What is the difference of the TL series? TL6xx TL7xx TL8xx Is it just power consumption? Cheers
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    Class D amplifier (different kind :)

    Hey guys, Class D amplifiers but a different form this kind, this question is more on OpAmps: Right... I'm looking for an quad opamp that will best suit my job: 2 Opamps being used within a triangle wave generator operating at ~140Khz 1 Opamp as an inverting amplifier to amplify the incoming...
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    Power Supply for capacitor bank

    Hey Jack! I suppose one of the main points on the charge rate would be the battery capacity/chemistry type of the batteries. For example, the internal resistance of standard ni-mh batteries usually limits them (safely) at 3C, 3 times the capacity of the battery. For example, 1.2v at 800mAh would...
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    Help with creating a power supply

    Your absolutely correct there! Sorry. Yep two 120w Laptop power supplies it is then! I'm no longer able to make PCB's at school (Because I don't go there anymore!) Do you know where I can get single PCB's fabricated for suitable prices? OR kits that I can use (without a laser printer as I simply...
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    Help with creating a power supply

    I completely agree with your laptop power supply statement, after a quick look on Rapid for a transformer (18v split at 250VA), a hefty
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    Help with creating a power supply

    Thank you very much for your help as usual hero :) I would have asked the seller but after buying various items multiple times from China, the outcome is usually the same: Read the description. So instead, I looked through his shop and found a power supply section but I wasn't able to find a...
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    Help with creating a power supply

    Hey guys, im wanting to create a Bass amplifier head and for the amplifier section, I want to use the Philips TDA8920BTH, it can provide quite a high amount of power at 0.5% distortion in BTL mode. What I was wondering though was how do I create a mammoth PSU for this amplifier? I would have...
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    help to make this..

    Woo! I actually used a concept like this for my electronics tech product for my GCSE, I used a Piezo trigger (they convert vibrations into an electronic charge), I then amplified this signal massively so it goes from the small signal to a quite large pulse, then put this through a Schmitt...
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    Technical help on building a low wattage heater.

    The reason you were probaly not having as much heat as you wanted would probably depend on the power supply. At a voltage that low, I believe you'd need to increase the current as with a constant resistant, current is inversely proportional to voltage, as in: less current is required as more...
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    Power Supply for capacitor bank

    I was originally going to use it to power an ETG gun but after having some extreme switching problems :P (couldn't find a thyristor or switching device with anywhere near enough current capability) I scrapped the idea and used the capacitors for different projects. Thanks to one of the users...
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    Power Supply for capacitor bank

    Hi Jack, when I was creating my capacitor bank (8000uF @200v) I was looking for a charging circuit and came across this website: http://sites.google.com/site/uzzors2k/boost_converter It uses some quite simple components (555 timer, power mosfet and inductor) and as it says on the website, can...
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    DESIGNING A SUPERCAPACITOR CIRCUIT

    Well, remember that you will need to consider the self discharge of the capacitor (The capacitor 'looses' charge through leakage over time) you will obviously need some form of step down converter to a voltage useable by the LEDs, it might be quite hard to design a step down converter using...
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    Switching a Relay from a low voltage AC source

    Hi, assuming that you won't need to switch at half the frequency of the sine wave, (12v automotive relays probably cannot do this) You should be able to go: Half wave rectifier > Capacitor filter > Transistor switching Relay > Output! The transistor amplifier section should be able to...
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    Magnetic Switches

    Hi Sam! Have you heard of Hall effect sensors? I'm not sure whether they would work with the 5m distance you are proposing but I do know that the output voltage varies with the level of magnetic field. Maybe a bit of research into these? I know that they are used within the twisting throttles...
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    Class D audio amplifiers!

    I had a search on my favourite website, eBay! :D And I found: IRF540 IRF9540 I think the 9540 is the P complement of the 540? Would these suit for my product because its only ~
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    Portable Stereo Project: Amp Woes

    I calculated massively wrong then XD I dont understand how it got so loud then, was my speaker just massively efficient or was it overdriving but where I couldn't hear it? I was only using a single 12v Supply while my Bass amp (Hiwatt 10w blah blah...) seemed quieter :S And I had got the speaker...
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    Class D audio amplifiers!

    Thanks a bunch dude, you're a real help :) Right, how about if I modify it to: 8" Speaker with tweeter (my dad uses them for his Denon integrated system lol) Use a TS555 instead (Please can you recommend what MOSFETS I should use? I haven't used mosfets yet, primarily because I just haven't...
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