Quote from: dog812 on April 13, 2009, 01:15:14 PM
Has anyone ever tried this circuit? Does it work better?
http://www.instructables.com/files/deriv/F2I/ZRXQ/FR0ZHOS5/F2IZRXQFR0ZHOS5.MEDIUM.jpg
Does 22n mean 22uF?

yes, i have built that variation. works great.
putting the capacitor and resistor in that position allows the rail voltage to hit the feedback winding of the transformer but prevents the signal generated by the winding being lost through the resistor as happens when the resistor is right on the base of the transistor.

what happens is the circuit freq. will double (approx.) giving the led twice the pulses (approx.) and the amp draw will half (approx)

So is that better? More effiecient?
What is 22n? Like if i wanted to buy it what am i looking for? 22 uF?

Now that I have read all the posts since last night... I must agree an index is a great idea.
I think a perfect place for an index is the first post of the other thread whose name can be changed to include the word index, perhaps.

jeanna

I am still learning.. trying to understand this stuff..

I am still struggling reading the diagram. and figuring out what stuff is..

Quote from: dog812 on April 13, 2009, 01:34:59 PM
So is that better? More effiecient?
What is 22n? Like if i wanted to buy it what am i looking for? 22 uF?

the led won't really have a noticeable change in brightness but the circuit will be more efficient, yes.
you can use a 10n also. actually the best capacitor value will sorta depend on what you choose for your resistor value.
i would say you can range the resistor from 1000ohms (sometimes written as 1K) to 2700ohms (sometimes written as 2k7) and be A OK using either a 10n or 22n capacitor.