AstrumPreliator
New Member
Alright, I've been working on a capacitance circuit with the Qt110-D IC (Datasheet found **broken link removed**) to light several LED's.
Here is the schematic (sorry for the photoshop schematic, clean format, don't have much installed yet):
**broken link removed**
The +v is 5.4v at 300mA. I'm not entirely sure what value of Zener diode to use. I was thinking a 3.6v Zener at 400mW with a 100 Ohm ballast resistor (R1). I don't know too much about Zener's though, so I'm not sure if that will work.
The capacitor is rated at 10nF. Resistors 2-7 are 22 ohm resistors. I'm not sure on what value to get for the transistor either. Without the Zener, the input voltage is 5.4v and the output is 3.9v.
Oh yeah, and the LED's are all 30mA with a votlage drop of 5v.
So if anyone can help me figure out the values of the transistor, zener, and ballast resistor it would be much appreciated. Thanks.
Here is the schematic (sorry for the photoshop schematic, clean format, don't have much installed yet):
**broken link removed**
The +v is 5.4v at 300mA. I'm not entirely sure what value of Zener diode to use. I was thinking a 3.6v Zener at 400mW with a 100 Ohm ballast resistor (R1). I don't know too much about Zener's though, so I'm not sure if that will work.
The capacitor is rated at 10nF. Resistors 2-7 are 22 ohm resistors. I'm not sure on what value to get for the transistor either. Without the Zener, the input voltage is 5.4v and the output is 3.9v.
Oh yeah, and the LED's are all 30mA with a votlage drop of 5v.
So if anyone can help me figure out the values of the transistor, zener, and ballast resistor it would be much appreciated. Thanks.