Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Slightly off topic, but you know we were discussing newton's law of universal gravitation today. Say you had a massive object in space and a relatively insignificant mass. Wouldn't the resultant gravitation force between the two be a violation of the laws of conservation of energy, of sorts? No...
It is merely GCSE, and I don't think you concentrate on logistics. Just the project and the concept should score fine. Personally I think that's quite good!
lmao, nae bother. Well actually you just do general physics without specialization at this level. And sadly the electronics content is rather bland as I said. By "edge" I really meant over fellow colleagues.
Hiyya,
I used to visit this forum as a kid at about 14 and fantasize about complex projects with not much basic knowledge to build on. My posts in the past may have at times included asking ridiculous things - rather funny in the face of y'all pros lol. Anyway, time has come and I'll be...
Hi,
I'm looking to build a laser based burglar alarm for a school project. I already have a laser and a phototransistor in mind, however i do not know how to design a circuit that will amplify the current from the phototransistor which will then eventually go to the siren/alarm itself...
Hey,
It just popped to my mind that perhaps I could get some help here on how to create one of these. Though it must be pretty simple, just an amateur here. Any help highly appreciated. Thanks.
Hmm...well..basically, the apparatus provided include a power pack, constatain wire, 2 beakers..and a few others I cant remember but Ill post as soon as I do get hold of them. Its basically a model of a heater for a school proj. Thanks alot..help highly appreciated.
Hi,
Im looking for any ideas/ preferrably schematics on an electrical heater. Nothing really major, just perhaps something on the scale of a school size project. Any help highly appreciated...thanks.
Hey there,
We just finished doing the DC generator mechanism and all in school, and from this new introduction of electromagnetic induction and all, I'd llike to build a DC Generator. Although it'd probably take like umm... 4 dc batteries in the first place to rotate the coil using a...
Hi,
I'm looking to make a wireless LED that is controlled basically by a switch that communicates with the LED through either IR or RF (Id highly prefer RF). Can anyone help me out, preferrably with the schematic? Id seen earlier someone ask for help on sumthing similar, bu t hey wanted...
Hi and thanx to all the people for their wonderful help on my last problem. Unfortunately, down here they don't sell much stuff in electronics (you can't get a PCB for goodness sake..lol). Anyway, with the sound transmission eleminated, I thought of another thing. A very simple two piece device...
Hi,
I have purchased almost 4 microphones over the last 6 months and almost each and everytime they barely last 1 month - lol. Thus, I decided to try to convert the reciever of an ordinary telephone (or watever u call it - the one that you speak into), into a mic. I guess this is pretty...
Thanx!
Hey guys, thanx ALOT for your help. So, if i was to use the transmitter that Kinjalgp suggested, and the reciever that herbymcduff suggested, the reciever would be able to recieve the signal from the transmitter? And, one last thing.. if possible... the circuit diagrams are like chinese...
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