I am new to electronics and I am following the book "Make: Electronics" by Charles Platt.
I have built a circuit with a 12V DC power supply, a 1K resistor, a relay, two LEDs, and a momentary-on switch.
When I turn on the power supply, one of the LEDs lights up. However, when I press the switch down (and hold it down) that LED goes out but the other one does not light up at all.
I have made sure all connections are good, and I have replaced every single component in the circuit, but it just doesn't seem to be working.
The only thing I can think of is that I was mis-sold a relay by Maplin. I asked for a "DPDT non-latching 12V DC relay" as it says in the book. The one I have has "1A 125V AC" and "2A 24V DC" written on it.
Any suggestions? Cheers.