The breadboard
Hi again,
I have shown the breadboard so you can see if I have made any errors. The board shows the LEDs in an UNLIT state, however as soon as I apply power to the red/black leads you see at the top, both lights come on. However when I apply a 1.2V positive to pin 5 from a + terminal of a 1.2V battery the lights go out - I am putting the negative of that 1.2V battery to the ground of all the other parts of the circuit. I have left the 1.2V battery out of the system for now.
**broken link removed**
A) is the Pin 9 mode attached to the positive rail which brings 10.5V
B) goes to the ground negative rail
c) goes to pin 3 providing 10.5V
D) is the negative from a 10.5V battery pack
E) is the positive from a 10.5V battery pack
Remember the LEDS are actually lit with the 10.5V battery pack - I have dotted the LEDS so you can see when their leads go.
In the green circled area there is a small silver pin joining pin 6 with pin 7. Then from the pin 7 row we have 2 610Ohm resistors connected in series. Pin 8 ADJ connects to the middle of the two resistors through the small orange cable. Then they all get grounded by the big orange cable.
So the lights are on at this point, if I put the + from a 1.2V battery to pin 5 and the negative from the battery to the ground rail, then the lights go out...
Any ideas - I am utterly baffled LOL
Thanks
Peter Dove