Strobe light effect with 1 transistor

Homemade inductance meter

[acmefixer]

This 'negative resistance' oscillator uses the transistor's emitter to base in breakdown mode, which is to be avoided because it degrades the transistor. This circuit is never used in any mass produced equipment because the transistors are not tested and were not designed to be used in breakdown mode. It must be avoided to prevent damage.

[elias-rnmx]

This guy is making real things, and he even answers to questions to explain his projects.for that reason.I subscribe.

[downtowngutter]

All these fun little projects on youtube make me want to invest in some tools lots of tools

[kenmoriyama]

I love the ideas and I really like it! Simpoe and easy! Thank you.
But, is there a way to power on in 3v-3.7v battery? What changes will be needed?

[erbenton]

Perhaps we could skip making music videos and actually explain stuff by talking?

[jim]

your presentation skills are getting better. nice little project.

[VRZXP]

Let me try to explain how it works. By RC = t, 3.3k resistor and 100u cap forms a time constant around 0.33s. When the cap just be charged, voltage of cap is lower than the acceptable reverse voltage of the VCE of the transistor. CE of transistor keeps open circuit then LED is off. However, once the cap voltage reaches over VCE, transistor becomes short circuit. It turns on the LED and also discharge the cap at the same time to complete one cycle operation. However, this circuit just works in high power supply voltage and the transistor may be damaged after a long time operation. To make this circuit more reliable, the transistor can be replaced by a zener diode, then using a NPN transistor which drives from the net between zener and LED to discharge the cap.

[earlskieu]

Will it work the same flash & illumination if you add 2 more led in parallel conmection?

[gbuq]

Changing the value of the capacitor alters the time constant increasing or decreasing the rate of flash.

[richardjeun]

Collector is on the right side and emitter is on the left side; I think you need to switch the C and the E on the video. I never knew a transistor allows current to flow without any current to flow through the base.

[jayakrishnanpvm]

Can you make it 10watt led strobe lights

[deepakpoojary]

Which type of electronic shop has these bc547 and other components sir?

[imtheroboart]

Always connect the negative terminal from the supply first to the circuit :-)

[kaustubhthomare]

How to increase / decrease the time between two flashes?

[INVERTERize]

The base of the transistor ar not connected how it will work

[NickBarban]

Could you run this off a sr2032 coin battery at 3.3v or would the resistor value need to be dropped?

[muratkayaaltn]

A very nice work. I have a question! Can we burn more than one led diode with this circuit or a different circuit? Thanks.

[bam-ol]

How to adjust the speed when blinking?

[sukh]

Good morning very good Bhai kya ise hum bike pe chala sakte hai

[soldevida]

Can I reduce the input v by removing the resistors?