Scubasteve
New Member
Hey everyone,
I have a centertapped transformer which is generating 6.3VAC@1.3A ( X 2). I need one of the secondaries to generate necessary voltage for an array of LEDs. I need the other secondary to generate ~25-26VAC to drive a 24Vdc motor that I have.
This motor doesn't draw more then 150mA max.. I want to be able to convert this 6.3VAC 1.3A to 25-26VAC. I know I can use another transformer, but I really want to keep this design efficient. I don't want to convert it to DC and use a boost regulator, it seems a bit much for what I want. Initially, I was thinking of using a higher voltage transformer and using a switching power supply from national semiconductor to create a voltage specific to the voltage drop on my LEDs. This seemed like a good idea because some of the devices had current limiting, but when I looked at the simulation, there is a starting peak current which could blow out my 60LEDs.
I know I can use a transformer for this, but which one? I don't want to spend a lot of money. Is there a way I could wind a coil for this? I have a few ferrite rings and a lot of magnet wire. I am not sure about some of the guidelines to do this though, but if anyone has any advice, I would really appreciate it.
Thanks !,
Steve
I have a centertapped transformer which is generating 6.3VAC@1.3A ( X 2). I need one of the secondaries to generate necessary voltage for an array of LEDs. I need the other secondary to generate ~25-26VAC to drive a 24Vdc motor that I have.
This motor doesn't draw more then 150mA max.. I want to be able to convert this 6.3VAC 1.3A to 25-26VAC. I know I can use another transformer, but I really want to keep this design efficient. I don't want to convert it to DC and use a boost regulator, it seems a bit much for what I want. Initially, I was thinking of using a higher voltage transformer and using a switching power supply from national semiconductor to create a voltage specific to the voltage drop on my LEDs. This seemed like a good idea because some of the devices had current limiting, but when I looked at the simulation, there is a starting peak current which could blow out my 60LEDs.
I know I can use a transformer for this, but which one? I don't want to spend a lot of money. Is there a way I could wind a coil for this? I have a few ferrite rings and a lot of magnet wire. I am not sure about some of the guidelines to do this though, but if anyone has any advice, I would really appreciate it.
Thanks !,
Steve