- #1
Lithium2142
- 4
- 0
Hello! I haven't touched base in electronics in about a year (only took one course too)
I'm currently working on a project and I'm wondering what the best solution might be to creating a square wave which is 5 milliseconds high, 12 milliseconds low (low as in ground not negative voltage).
This square wave most power an LED from on of those powerful LED flashlights. The LED itself has to be on 5 milliseconds off 12 milliseconds.
What do you think is the best way of doing this? Again really rusty on this stuff... Would a 555 be able to do this? - with a transistor to up the current?
The LED light itself was originally hooked up to 3 AAA batteries (4.5 V total)
and the circuit was a simple Vin -> 0.75 Ohm Resistor (purple -green - silver -gold)-> LED >- ground.
do transistors switch on and off as rapid as I would like? or would they lag behind and not fully drop the voltage or raise it for the LED?
Any other efficient cost effective solutions are welcome. :D
If someone could even provide a schematic I would be indebted to them (or because I know the layout of the 555 - just what values to use) - also.. I sort of forgot how to even use transistors correctly.. or I am using them and I'm just not sure ... Pitiful.
thanks,
Lith
I'm currently working on a project and I'm wondering what the best solution might be to creating a square wave which is 5 milliseconds high, 12 milliseconds low (low as in ground not negative voltage).
This square wave most power an LED from on of those powerful LED flashlights. The LED itself has to be on 5 milliseconds off 12 milliseconds.
What do you think is the best way of doing this? Again really rusty on this stuff... Would a 555 be able to do this? - with a transistor to up the current?
The LED light itself was originally hooked up to 3 AAA batteries (4.5 V total)
and the circuit was a simple Vin -> 0.75 Ohm Resistor (purple -green - silver -gold)-> LED >- ground.
do transistors switch on and off as rapid as I would like? or would they lag behind and not fully drop the voltage or raise it for the LED?
Any other efficient cost effective solutions are welcome. :D
If someone could even provide a schematic I would be indebted to them (or because I know the layout of the 555 - just what values to use) - also.. I sort of forgot how to even use transistors correctly.. or I am using them and I'm just not sure ... Pitiful.
thanks,
Lith