it may seem like a noob question but..................im a noob
I have this clap switch from velleman(mk139) and it says i need a 12VDC/150mA input for it to work the actual clapper part, what type of batteries other than just 12V (some answer on a google search) do i need. i.e. do they need to be that mA or can they be any.
any explanation of mA would help as wikipedia kinda confused me a bit
I am not sure as to why you would want to operate this with batteries!
You can just use anyAC/DC adaptor with a 12 volts output 150 ma which is for sure much cheaper than 12 volts worth of batteries.
If you really do want batteries I guess you can just use 2x 6 volts flashlight batteries in series. and it might last one week.
Well, Logically speaking if you were able to solder the components on this kit, I am sure you can integrate an AC/DC adaptor within the lamp.
The adaptor is much smaller than batteries and it is actually smaller than the kit itself.
You have a choice, either install the kit and the adaptor in a box that you plug into the AC and run one wirer to the lamp or if you have enough room in the lamp install the kit and adaptor in the lamp.
I was just looking at the manual that comes with your kit and it doesn't work with any ordinary AC lamp, it actually has a max of 24 volts so you will have to design your own electrical for your lamp. Therefore you can actually split your 12 volts wire from the adaptor and use this for the supply with a 12 volts light bulb (anything for cars is good)
Your circuit and other people's circuits look like the lamp is only 12V. Isn't your lamp 120V? If 120V then the relay contacts must switch 120V, not 12V.
The circuit is powered from 12VDC.
I think ive sorted it with mikes solution however (yes im a beginner) with its 12VDC/150mA input for the clapper am i able to use a 12VDC/700mA adaptor on it without braking?
as all i understand is that 700mA is the most you can take from it ?
No 150 mA is the minimum the clapper needs to work, this is what it consumes so you can use anything above this.
The 12volts on the other hand is something you don't want to go over or bellow.