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**DONOTDELETE**
Guest
Hi guys!
I am currently working on a step up circuit with an easy-to-wind inductor and only 1 transistor. The circuit is currently delivering only a few milliamps to the LED, but it is extremely easy to build. The indultor is a small ferrite core (8mm height, inner diam 5mm, outer diam 9mm), which has 3 windings on it: 2 windings of 4 truns each and 1 winding of 6 turns of 0.5mm insulated copper wire. The switching transistor is a 10-cents-type BC547C. All other components you need are: 1x 100nF cap, 1x 10k resistor and a 1N4148 diode.
The total cost should be about 1$.
I am currently trying to improve this circuit, and if anyone of you has improvement ideas or any experience with this kind of DC converters, please tell me!!!
My main problem at the moment is, I cannot take enough energy out of the core to power the LED with 20 or even 40 mA without breaking up the oscillation. I will try a larger ferrite core soon, as well as adding an air gap to the core.
Bye!
I am currently working on a step up circuit with an easy-to-wind inductor and only 1 transistor. The circuit is currently delivering only a few milliamps to the LED, but it is extremely easy to build. The indultor is a small ferrite core (8mm height, inner diam 5mm, outer diam 9mm), which has 3 windings on it: 2 windings of 4 truns each and 1 winding of 6 turns of 0.5mm insulated copper wire. The switching transistor is a 10-cents-type BC547C. All other components you need are: 1x 100nF cap, 1x 10k resistor and a 1N4148 diode.
The total cost should be about 1$.
I am currently trying to improve this circuit, and if anyone of you has improvement ideas or any experience with this kind of DC converters, please tell me!!!
My main problem at the moment is, I cannot take enough energy out of the core to power the LED with 20 or even 40 mA without breaking up the oscillation. I will try a larger ferrite core soon, as well as adding an air gap to the core.
Bye!