Toroid question

[NickLee]

i am looking for a part that i can go buy that will work in place of the toroid coil in this circuit i had ordered this from mouser but it wont work... i dont want to wrap my own i would like to just buy one,.. any help would be great

 

[mneary]

You need an inductor with two windings. See page 982, 998, 1000, 1002, 1022, and 2302.

You might be able to use the isolation transformer from an old Ethernet card.

 

[colin55]

see my discussion on this circuit on Talking Electronics website under: LED Torch Circuits.
Adding a capacitor reduces the current to 30% of the original.

**broken link removed**