Hi there guys n gals.
I've just delved into making a circuit with flashing LEDs and it seems to only last a short period, 48 hours, was wondering if I could ask someone to see if I've made a beginners boo-boo please.
I followed some youtube vids and worked out my resisters at 300ohm using
LED forwarding voltage is 2.5V to 3V - I used 3V
Power supply 9V battery
9V-3V=6V
LED is 2mA so 6V/0.02A=300Ohm
Next reciter up is a 330 Ohm.
So I created a parallel circuit with each LED having its own resister.
_______resister_______LED_______
| |
|_______resister_______LED _____|
| |
+ ----------------|-----------resiter--------------LED---------|--------------- neg
Total 5 LEDs.
Have I misunderstood how it's done please?
My reason for doing this is that I plan to light my scratch build models and eventually introduce speakers & motors, but baby steps at the mo!
Any thanks for any suggestions.
I've just delved into making a circuit with flashing LEDs and it seems to only last a short period, 48 hours, was wondering if I could ask someone to see if I've made a beginners boo-boo please.
I followed some youtube vids and worked out my resisters at 300ohm using
LED forwarding voltage is 2.5V to 3V - I used 3V
Power supply 9V battery
9V-3V=6V
LED is 2mA so 6V/0.02A=300Ohm
Next reciter up is a 330 Ohm.
So I created a parallel circuit with each LED having its own resister.
_______resister_______LED_______
| |
|_______resister_______LED _____|
| |
+ ----------------|-----------resiter--------------LED---------|--------------- neg
Total 5 LEDs.
Have I misunderstood how it's done please?
My reason for doing this is that I plan to light my scratch build models and eventually introduce speakers & motors, but baby steps at the mo!
Any thanks for any suggestions.