Joule Thief with Flip Flop

[Matthington10]

Love your accent :D

[hardstyle905]

@Matthington10 dutch.

[RODALCO2007]

@madamerotten Nope, that manderine just happened to be laying on the table

[madamerotten]

At 0:09, are you using the tangerine as a battery?

[ciprianwiner]

man thanks a lot ,i got lots of interesting effects just by changing some things around :D

[fitzgerald95971]

what is the practical application?

[DamoRC1]

Thanks so much for posting this working example. Two Questions. First, do I have to use a germanium diode GE1 - is there a specific reason not to use a regular diode. Second, can I leave out the three LEDs that form part of the Joule Thief portion of the circuit?

Thanks in Advance

[RODALCO2007]

@DamoRC1 You can use a normal diode.

The reason I use a germanium diode is less voltage drop 0.3 instead of 0.6 Volts.

The three led's in this case are acting as a zener diode and dropping about 5 Volts across the led's to allowe the flip flop to work reliably at about 5 Volts.

You could fit a 4V7 or 5V1 zener instead.

[projectNEMESIS001]

wow XD

[man13preet]

This is very cool...because there is no use of IC and timers but only capacitor, diodes and resistors...ant schematics?

[RODALCO2007]

@man13preet Hi, there are a lot of great circuits to be built with simple discreet components.

[man13preet]

@RODALCO2007 can u give me the schematic??? it very very good.....cant we make a joule thief with iron rod instead of ferrite rod....what does ferrite rod do?

[RODALCO2007]

@man13preet It is at the text page by the video.

just click on the link.

You can try iron rod. not sure if that works well as the circuit oscillates at a high frequency. 8 - 16 kHz

[chrisg6674]

Can you post a link to the schematic?

[RODALCO2007]

Schema attached

[Catasteaua]

thanks

[chrisg6674]

Thanks!

[LoneOarman]

I take it that the capacitors are doing the flip/flop timing? .

[RODALCO2007]

Thanks for the compliment. Taught by my dad years ago, on the old double 8 films

[Catasteaua]

do you have a scheme at this circuit ?

thanks!

[RODALCO2007]

Schema attached

[stevenchiverton]

@RODALCO2007 how do you find an attached schematic where is it

[RODALCO2007]

@stevenchiverton At the index text box

[willict311]

what is a joule theif?

[RODALCO2007]

A joule thief is a simple oscillator circuit which drains the last energy out of a "flat" 1.5 Volts battery.

it will drain the voltage down to about 0.4 Volts and can keep a couple of LED's going for a couple of days.