Hello,
I have a mini alarm that has a 12 vdc speaker alarm, what I want to do is add a light which is only 4.5vdc. The funny thing is the unit uses only 3 AA batteries, but the siren triggered uses 12vdc. So it would burn up the light.
I am new to the concept of electronics etc. I seen voltage regulators but they only go down to 5vdc, I thought of trimmers, but can you use them for dropping voltage? and I have no idea how to use the resistors or what type, there are so many types!
Pelase help. I just need a cheap, simple way to nock down 12vdc to 4.5vdc.
Thanks.
I have a mini alarm that has a 12 vdc speaker alarm, what I want to do is add a light which is only 4.5vdc. The funny thing is the unit uses only 3 AA batteries, but the siren triggered uses 12vdc. So it would burn up the light.
I am new to the concept of electronics etc. I seen voltage regulators but they only go down to 5vdc, I thought of trimmers, but can you use them for dropping voltage? and I have no idea how to use the resistors or what type, there are so many types!
Pelase help. I just need a cheap, simple way to nock down 12vdc to 4.5vdc.
Thanks.