So...just use a voltage regulator like 9-9.5V with lm317 an conect in series 3 LED's. The circuit wil protect them from any spykes and the curent trought the led's it's fixed.
Or....use a current regulator if u like
Or use a ultra low dropout reg
All 3 will protect the leds from spykes and so on
The current reg might fry the leds thought if higher voltages are coming in.
Or....use a current regulator if u like
Or use a ultra low dropout reg
All 3 will protect the leds from spykes and so on
The current reg might fry the leds thought if higher voltages are coming in.