thirdprize Posted April 3, 2006 Report Share Posted April 3, 2006 I have built two little kits I got from maplins. One has a 9v battery and the other has 2xAAA batteries. The 9v one is a sound generator and and the other drives a couple of little motors. I would like to control them both with the same on/off switch. Could i wire them both into the same switch or would the differing power sources cause problems? Could i piggy back one off the others power supply? Any suggestions?Shaun Quote Link to comment Share on other sites More sharing options...
audioguru Posted April 3, 2006 Report Share Posted April 3, 2006 Since their supply voltages are very different, just use a two-pole switch that is two switches but with one toggle. Quote Link to comment Share on other sites More sharing options...
windoze killa Posted April 4, 2006 Report Share Posted April 4, 2006 You could use a 3.3V regulator on the kit that runs off the 2 AAs. This way you could run them both from the 9V battery. If 3.3V is a bit much then you could also put a Schotky diode in series with the 3.3V supply. Quote Link to comment Share on other sites More sharing options...
Staigen Posted April 4, 2006 Report Share Posted April 4, 2006 HiBut the siliniode will use powerA silly question, what is a siliniode? Do you mean a silicone diode?//Staigen Quote Link to comment Share on other sites More sharing options...
windoze killa Posted April 4, 2006 Report Share Posted April 4, 2006 I think he means solenoid or more precise, a relay. Quote Link to comment Share on other sites More sharing options...
Staigen Posted April 4, 2006 Report Share Posted April 4, 2006 Me too, but why dont he write that then, and why a big solenoid, a little relaywould be a better choice!Staigen Quote Link to comment Share on other sites More sharing options...
Staigen Posted April 4, 2006 Report Share Posted April 4, 2006 Hey, those last five words wasn't there before!//Staigen Quote Link to comment Share on other sites More sharing options...
Staigen Posted April 4, 2006 Report Share Posted April 4, 2006 And a relay will complicate things, and a linear regulator will waste power. But,a swiched regulator will be just fine, but will complicate things too.Staigen Quote Link to comment Share on other sites More sharing options...
Staigen Posted April 4, 2006 Report Share Posted April 4, 2006 Hi helio905This, i belive, you have to explain a little bit, and a little schematic would be nice tooStaigen Quote Link to comment Share on other sites More sharing options...
audioguru Posted April 4, 2006 Report Share Posted April 4, 2006 You could use the same swich that you have. Connect the +'sto your two circits and both -'s to the switch and then to the loads andthey should not affect each other.If the switch has more than one contact then it is two switches in one like I said to use. Quote Link to comment Share on other sites More sharing options...
Staigen Posted April 4, 2006 Report Share Posted April 4, 2006 Hi AudioguruHehe, a switch always have at least 2 contacts(connections), else it can not perform its task! ;D ;DBut i belive you mean poles(contacts) :) :D ;D//Staigen Quote Link to comment Share on other sites More sharing options...
thirdprize Posted April 4, 2006 Author Report Share Posted April 4, 2006 Wow, thanks for all the suggestions. just to recap though ...1)If i put a 3.3v regulator/relay before the 3Amp kit I can power them off the same source. Whats the proper name for these things, just so i know what to get.2)If i did the above thing then i could control them with the same switch, as they would both accept the same current thing. If not, then get a 2 pole switch that would control both circuits.cheers.Shaun Quote Link to comment Share on other sites More sharing options...
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