PNP Capacitor Trigger.ASF

[harpbloke]

thats great with the capacitor, ive never got the right size resistors, but i have heaps of caps.

do you suppose the cap and diode setup might work with a npn?

[Lidmotor]

@harpbloke ------This was a funny circuit to build. I started out by replicating another circuit and then just started taking parts out. I got down to just a few parts and then just started applying what I have learned and presto----out came this. 

[helpmonkey]

the main circuit look somewhat like a joule thief ... a very usefull circuit indeed ... maggie blinks when the red led illuminates ... red has the lowest forward bias voltage generally ... it must steal all of poor maggies energy ... it wont trigger without the LED on the base... the led must provide the voltage accross the pn junction and I agree every circuit I build I learn something .. happy holidays

[Lidmotor]

@helpmonkey -----Happy Holidays to you also. Thanks explaining why the LED is needed in the circuit.

[nikulp68]

Red LEDs use up more current, thats why maggie goes to sleep.

[Lidmotor]

@nikulp68 -----This was a good experiment to show that.

[PHILG64]

Thanks, I like your videos. You are helping me learn and push my electronics motivation. MERRY CHRISTMAS !

Phil

[Lidmotor]

@PHILG64 -----I am glad that my videos have helped you. Merry Christmas.

[tectalabyss]

Merry Christmas to you.neat setup.Thanks for sharing. Tec

[Lidmotor]

@tectalabyss -----Your welcome. Other people helped me get started on this and continue to help me. It is a good thing. The world needs more of this.

[slinky460]

Interesting as always. I always learn something, thanks Lid, Slinky

[Lidmotor]

@slinky460 ---- It seems like every experiment I do (even if it is a complete failure) I learn something new. When Maggie's eyes went out it was totally unexpected. It took me a few minutes to understand what was happening.

[stefb2005]

Great work as usual lidmotor, capacitor are interesting things , Happy xmas

[Lidmotor]

@stefb2005 ------Happy Xmas to you too.

[coilsinamotor]

thats awsome (the snowmen)

[Lidmotor]

@coilsinamotor ------Thanks.

[coilsinamotor]

@Lidmotor where did u get it :)

[Lidmotor]

@coilsinamotor ------The snowman? Big Lots. The circuit? I made up as I went along.  Maggie? I made her from odds and ends.

[coilsinamotor]

@Lidmotor ooh ic... sweetness thankx :)

[craig265]

HIPPIE HOLIDAYS

[Lidmotor]

@craig265 ----Merry Christmas.

[Rawbush]

I have seen that in other led's. Some colors require more wattage. Thanks for sharing that. Peace rawbush

[Lidmotor]

@Rawbush -------Yes. I already knew that from the led spec sheets that I have looked at but this was the first time that I really saw the effect in action. It was interesting to see

[egn83b]

The red side the tricolor led might have more voltage draw and the chip controlling the light shifts might get hung because the voltage drop so it takes more power away from maggie that is my insight. Since I had semiconductor classes I think this would be a feasible asumption. Most ic chips require two to three volts to make a shift plus their has to be a capactor inside that thing because caps act the same way when you fill them with voltage and put out the leds.

[Lidmotor]

@egn83b ----It would be interesting to see the exact circuit that is inside that IC chip. Amazing that all that stuff goes on in such a small package.