Micro Shark

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4Tesla

Micro Shark « on: 2014-03-30, 19:39:25 »

Newbie

Posts: 173

This is Igor's TROS (transistor oscillator) circuit based on Akula's 80w. I call it the Micro Shark.

He says it is a self-running JT. It is supposedly a long runner.. a few days?

TROS - "long-runner" 2
https://www.youtube.com/watch?v=YPiUSCQIKC4

Micro Shark

ms-1.jpg (39.8 kB, 578x558 - viewed 1558 times.)

Micro Shark

ms-2.jpg (25.88 kB, 596x336 - viewed 1503 times.)

Micro Shark

MicroShark.jpg (31.07 kB, 651x472 - viewed 1518 times.)

Peterae

Re: Micro Shark « Reply #1 on: 2014-03-30, 21:26:04 »

Group: Administrator
Hero Member

Posts: 4635

2 things, i was not happy with the way he connects the battery for a long time, the only reason i can think to do this is to shorten the time period the device is un-powered by the battery.

The other thing was that he then placed the battery in series with the LED, this may well be to charge it, but if momentarily the battery and series led's have varying impedance of the inductor then the battery may end up introducing power to the system.

4Tesla

Re: Micro Shark « Reply #2 on: 2014-04-05, 07:06:02 »

Newbie

Posts: 173

Quote from: Peterae on 2014-03-30, 21:26:04

2 things, i was not happy with the way he connects the battery for a long time, the only reason i can think to do this is to shorten the time period the device is un-powered by the battery.

The other thing was that he then placed the battery in series with the LED, this may well be to charge it, but if momentarily the battery and series led's have varying impedance of the inductor then the battery may end up introducing power to the system.

I asked for the values of the components and he replied.. "don't waste your time.. runs off capacitor".. which I already knew, but still would like to build.

Peterae	Re: Micro Shark « Reply #3 on: 2014-04-05, 08:35:28 »
Group: Administrator Hero Member Posts: 4635	Thanks 4Tesla for telling us his reply, at least he's honest