Combining radiant output, 0.2 + 0.2 = 1.5

[sucahyo]

I don't know if this can be used to measure performance, full CFL brightness at 3 watt:
YouTube - 3 watt CFL ligther with sting oscillator

[Sephiroth]

I don't know how high the voltmeters can go though there is no way I'm running this without a load! It has already blown two MJL21194 transistors and they aren't cheap!

[sucahyo]

I don't know how high the voltmeters can go though there is no way I'm running this without a load! It has already blown two MJL21194 transistors and they aren't cheap!

Yes, I understand the risk, I understand if you don't try it. My curiosity cost me 5 computer fan ...

I found that the PNP is the most vulnerable part in my circuit. I think MOSFET would fry instantly without load.

This circuit teach me that 240V part of a transformer is not 240V anymore in radiant oscillator, it would have high enough voltage to make spark gap. If the 9V primary have >2000V then the 240V part would surely more than 240V .

[crackahcrackah]

I don't know if this can be used to measure performance, full CFL brightness at 3 watt:
YouTube - 3 watt CFL ligther with sting oscillator

Sucayo, if you want a reliable consistent means of measuring the CFL output, in terms of brightness, you should go to a local hydroponics store and buy one of the $10-20 light meters. Then you just set the sensor in a fixed spot and assess the normal output level vs. the levels that you modify with your circuit.

[thaelin]

Just to let you know, Imageshak dumped your upload due to violation of terms it seems.

thay

[sucahyo]

Sucayo, if you want a reliable consistent means of measuring the CFL output, in terms of brightness, you should go to a local hydroponics store and buy one of the $10-20 light meters. Then you just set the sensor in a fixed spot and assess the normal output level vs. the levels that you modify with your circuit.

Thanks, I can not afford that. Besides I doubt it is available in Surabaya.

Here is comparison of ceiling light with CFL.
YouTube - Previous 3watt CFL brightness comparison

I notice that at lower frequency, the light is more violet. At resonance it flicker at brighter than ceiling. Same brightness appear before resonance frequency.

Just to let you know, Imageshak dumped your upload due to violation of terms it seems.

thay

Thanks, I delete it since I think it is unimportant, it only work with 1 capacitor FWBR too.

[sucahyo]

Accidentaly found booster

Booster circuit increase efficiency:
YouTube - Boosted sting oscillator

Unfortunately, the circuit is a mess. I will post the circuit when I can identify which part of the circuit actually part of the booster.

[sucahyo]

Booster circuit test

Input power:
without booster = 0.95A@11.5V = 10.925 watt
with booster = 1.26A@11.5V = 14.49 watt

Output power
without booster = 0.31A@10.8V = 3.348 watt
with booster = 0.64A@10.8V = 6.912 watt

Efficiency:
without booster = 0.31A@10.8V = 30%
with booster = 0.64A@10.8V = 47%

YouTube - Booster circuit test

[sucahyo]

61.9 % efficiency ...

YouTube - Boost circuit with lighbulb COP = 0.62

Input is 1.14A at 11.57, output is 1.03A at 8V.

my 61.9% vs Sepiroth's 62.4% , very close .


Charging almost full broken (10V) battery result in 57% efficiency.

[Sephiroth]

YouTube - Boost circuit with lighbulb COP = 0.62

Input is 1.14A at 11.57, output is 1.03A at 8V.

my 61.9% vs Sepiroth's 62.4% , very close .


Charging almost full broken (10V) battery result in 57% efficiency.

Just you wait till I get those transistors replaced

looking good

[sucahyo]

Just you wait till I get those transistors replaced

looking good

Something better than MJL? wow.

How about diode? Have you ever compare diode? not from spec but from bench / output current test?





BTW, here is a picture of my 3 watt sting oscillator :

[Tectalabyss]

A Big thumbs up

Something better than MJL? wow.

How about diode? Have you ever compare diode? not from spec but from bench / output current test?





BTW, here is a picture of my 3 watt sting oscillator :

Hi sucahyo.
A Big thumbs up I've not had the time to try any of your work yet.But I have been reading and watching. Thank you .Tec

[juju]

thanks

thanks for sharing sucahyo, with picture looks simple!

just a question for you, do you know what is the complementary PNP transistor of your KSC5027? a need too pass high current and voltage true my circuit! but the transistor must be PNP,

hugs

[sucahyo]

Thanks tecs and Juju .

I don't think you need to use KSC5027. MJL29114/MJL29113 is much better. However, just to see if the circuit can work with cheap transistor, I will make the TIP31C + TIP32C one and see how it compare with the KSC5027 one.

Important:
Nvisser notify me that the PNP leg I post in diagram is wrong.

I will post the correct circuit right away.

[sucahyo]

Revised circuit

This is the correct diagram for my circuit. This one use cheap TIP31C & TIP32C, 200mA at 10V version.