Hi,
I am a bit of a newbie on the electronics side although I have done lots of trial and error electronics projects mostly digital. For a small project that I am planning I need to control several sets of 24v lights by switching them in both the +ve and -ve sides via 5v lines coming from some TTL logic circuits. Consider this more like one half of a H bridge motor controller.
I can go with OptoCouplers, but the cost of the optocouplers is too high for my budget as I need to create around 50 of these. I would prefer a pair of Darlingtons to be used for the switching. Each +ve -ve pair should be able to drive at least 3A. I have used D313 in the past for switching both +ve and -ve loads for loads ~5v by putting the emitter and collector in the opposite directions, but this setup is not capable of switching the 24v load (probably due to the base current being too low).
I would prefer to use the D313 as one of the power transistor as I have heaps of them lying around, but others are OK as well. Can anyone suggest a way for me to get this done.
Thanks in advance.
Rasika
I am a bit of a newbie on the electronics side although I have done lots of trial and error electronics projects mostly digital. For a small project that I am planning I need to control several sets of 24v lights by switching them in both the +ve and -ve sides via 5v lines coming from some TTL logic circuits. Consider this more like one half of a H bridge motor controller.
I can go with OptoCouplers, but the cost of the optocouplers is too high for my budget as I need to create around 50 of these. I would prefer a pair of Darlingtons to be used for the switching. Each +ve -ve pair should be able to drive at least 3A. I have used D313 in the past for switching both +ve and -ve loads for loads ~5v by putting the emitter and collector in the opposite directions, but this setup is not capable of switching the 24v load (probably due to the base current being too low).
I would prefer to use the D313 as one of the power transistor as I have heaps of them lying around, but others are OK as well. Can anyone suggest a way for me to get this done.
Thanks in advance.
Rasika