simple circutry/electronics? all i need to know is how to...?

S

Steven M

New member
all i need to know is how to simply wire 2 leds to a battery and switch its for my daughters dolls house and its to simulate an up and down stairs light
obviously i will need to know what leds to use and how manny batterys/voltage etc
thx
 
You are trying to duplicate a 3-way light switch where two switches located at opposite ends of stairs can control the same light


You will need to use two SPDT (Single Pole Double Throw) switches. DPDT (Double pole Double throw switches can be use if you can't find SPDT.


On the SPST switches you will see three connections the Center one is common (C)and makes contact with either of the outer contacts (A or B) depending upon the position of the switch.

I'll referr to Switches by number as SW1 and SW2

First connect a wire from SW1 A terminal (one of the outer contacts) to the same A terminal on SW2. Repeat this for the B terminal of both switches. You now have two wires connecting A to A and B to B between both switched.

This leaves the remaining center contact (C or Common) on SW1 & SW2.

Connect a wire from the battery positive to SW1 C
Connect a wire from SW2 C to one of the wires from the light bulb
The remaining wire from the lightbulb gets connect to the Negative of the battery.


Thats it....
 
leds or light emmiting diodes are quite simple. They often work on AC and Dc circuits. For your dolls house example you will best need to buy 2 say 9volt dc leds. These can be obtained from places like Maplin Electronics and are cheap. Each led will have two legs coming from them. The one leg (which is slightly longer) is the (positive side of the LED ). Connect the output from the 9Volt battery POSITIVE to the Negative (short leg ) of the 1st LED, then put a piece of wire from the Positive(longer leg) on the 1st LED to the Negative (or shorter leg ) on the 2nd LED. Next from the 2nd LED positive via a switch , connect a wire back to the NEGATIVE of the 9Volt battery.
hope this is of some help.

you could use LEDS that run on say 4.5 volts instead and wire the same ....in each case you will also need some type of battery holder to connect the wires to and from , any switch will work for such a simple circuit
 
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