COP 17 Heater | Rosemary Ainslie | Part 2

[witsend]

The MIB disguised themselves as that mysterious CatWoman this time … - Couldn’t read everything yet, have to go to work to gather some money to pay for the heating systems which we do need here.

LOL B.
Catwoman could never be MIB. She's just interested. I was rather hoping from comment from her. It's lonely being the only woman on this thread. If you need to identify MIB just look for the men wearing dark glasses.

That's always a dead giveaway.

Regarding your utility bills. Here's hoping that a really modest little switching circuit will help. At this stage we can only hope to get hot water. But every little bit helps. LOL

[Aaron]

lighting

If the topic here is still on the actual circuit, I'm using it for something
else right now.

The 555 circuit Peter gave me when I first tried the quantum article.

Ignition coil instead of inductive resistor.

Output to compact fluorescent tube that has been removed from it's
electronics. HV of course from the coil was powering the light. Mosfet
just chopped 12v 7ah battery to the tube.

Was nice to see up to 24v spikes kicking back to the battery after every
pulse. Light was descent for input. No efficiency claims, just that I was
playing around.

I know with tuning it could be optimized. The Joule Thief's may be beyond
what this could do, not sure because I haven't built much from those
projects. But just wanted to mention it. This is different from my tube
lighting vid because I was using an inductive resistor with that. With this
one, I'm not - it's an ignition coil.

Anyway, this could be its own thread or in the efficient lighting circuit
threads.

[witsend]

If the topic here is still on the actual circuit, I'm using it for something
else right now.

The 555 circuit Peter gave me when I first tried the quantum article.

Ignition coil instead of inductive resistor.

Output to compact fluorescent tube that has been removed from it's
electronics. HV of course from the coil was powering the light. Mosfet
just chopped 12v 7ah battery to the tube.

Was nice to see up to 24v spikes kicking back to the battery after every
pulse. Light was descent for input. No efficiency claims, just that I was
playing around.

I know with tuning it could be optimized. The Joule Thief's may be beyond
what this could do, not sure because I haven't built much from those
projects. But just wanted to mention it. This is different from my tube
lighting vid because I was using an inductive resistor with that. With this
one, I'm not - it's an ignition coil.

Anyway, this could be its own thread or in the efficient lighting circuit
threads.

Aaron - this is just so encouraging. The more so as it applies to lighting. That's a field that's entirely unexplored. Is there a video? I think we'd all like to hear more. Applications on a switching circuit are definitely topical. LOL. In fact it's a first after long fast.

[b4FreeEnergy]

G, for what it’s worth, I really don’t think Rosemary is the enemy. I’m not implying anything with this, just an unpretentious remark. I’m sure she will not forget her camera this time after all advice she’s got not to and the trouble it brought her because she didn’t take pictures last time. Cheers, B.

[b4FreeEnergy]

If the topic here is still on the actual circuit, I'm using it for something else right now.
The 555 circuit Peter gave me when I first tried the quantum article.

.

Speaking about other circuits and that 555 timer again, anybody did something with this or has some remarks about it?
2SGen, an amazing tiny Solid State Generator by JL Naudin
It actually starts here: 2SGen, an amazing tiny Solid State Generator by JL Naudin
Best regards, B

[Aaron]

555 light

Aaron - this is just so encouraging. The more so as it applies to lighting. That's a field that's entirely unexplored. Is there a video? I think we'd all like to hear more. Applications on a switching circuit are definitely topical. LOL. In fact it's a first after long fast.

I took a vid, not impressive - nothing is tuned, it was just to play around.
I may post that on youtube later.

If RMS over 0.25 ohm shunt is 0.145 volts, then 0.145X0.145=0.021025 / 0.25
ohms = 0.0841 amps X 12.55 v average on battery = 1.055455 watts.
Is that right?

[witsend]

I took a vid, not impressive - nothing is tuned, it was just to play around.
I may post that on youtube later.

If RMS over 0.25 ohm shunt is 0.145 volts, then 0.145X0.145=0.021025 / 0.25
ohms = 0.0841 amps X 12.55 v average on battery = 1.055455 watts.
Is that right?

ABSOLUTELY RIGHT. Looks promising if that's what you're using to light your lights. ???

[witsend]

Speaking about other circuits and that 555 timer again, anybody did something with this or has some remarks about it?
2SGen, an amazing tiny Solid State Generator by JL Naudin
It actually starts here: 2SGen, an amazing tiny Solid State Generator by JL Naudin
Best regards, B

Hi B. I saw this earlier. It's an intriguing effect but I'm having difficulty getting my mind around those complex magnetic fields. Defeated me thus far. Have you got any ideas here?

[b4FreeEnergy]

I took a vid, not impressive - nothing is tuned, it was just to play around.
I may post that on youtube later.

If RMS over 0.25 ohm shunt is 0.145 volts, then 0.145X0.145=0.021025 / 0.25
ohms = 0.0841 amps X 12.55 v average on battery = 1.055455 watts.
Is that right?

As far as I understand what you mean, the current through that 0R25 resistor is 580mA. The total power delivered by the supply is 7.279W and the power dissipated by the resistor is 0.0841W. So in my opinion the power delivered by the supply is 7.279W on average. Then again it’s been some time since I applied Ohms law. Cheers, B

[witsend]

As far as I understand what you mean, the current through that 0R25 resistor is 580mA. The total power delivered by the supply is 7.279W and the power dissipated by the resistor is 0.0841W. So in my opinion the power delivered by the supply is 7.279W on average. Then again it’s been some time since I applied Ohms law. Cheers, B

Hi B. You're up late! Golly. Nice to see you there. Aaron is measuring current across a shunt or sense resistor. It's for accurate measurement of the actual current flow. Therefore i = voltage across the resistor divided by the Ohms of the resistor. Then, that current x Vbat = vi = watts. Not sure where you found 7.3W?

[b4FreeEnergy]

Hi B. You're up late! Golly. Nice to see you there. Aaron is measuring current across a shunt or sense resistor. It's for accurate measurement of the actual current flow. Therefore i = voltage across the resistor divided by the Ohms of the resistor. Then, that current x Vbat = vi = watts. Not sure where you found 7.3W?

Late? It's only midnight ...

[b4FreeEnergy]

About my quick calculation.
If the voltage over that resistor is 0.145V and the resistor is 0.25 Ohm, the current is 0.58A - The voltage of the battery is 12.55V, the current is 0.58A, so the power delivered by the battery is 7.279W - The voltage drop over the resistor is 0.145V so there is another voltage drop of 12.55 - 0.145V over his load. Cheers, B

[witsend]

About my quick calculation.
If the voltage over that resistor is 0.145V and the resistor is 0.25 Ohm, the current is 0.58A - The voltage of the battery is 12.55V, the current is 0.58A, so the power delivered by the battery is 7.279W - The voltage drop over the resistor is 0.145V so there is another voltage drop of 12.55 - 0.145V over his load. Cheers, B

LOL, It's 1.25 am here. Definitely late by my time. You're quite right B. I'm wrong. Aaron did an i^2 x vbat but used volts. It is indeed 7.279. I guess I actually need some sleep - is my excuse. LOL

EDITED

[witsend]

Guys, this is way off topic but just so intriguing. We've had a heat wave from hell. But at nights we get a continuous electric storm - no rain - just thunder and lightning. Never seen the likes in the 30 years that I've lived in the Cape. Extraordinary. To me it's definite proof of climate change. And this in March. By now we're usually looking at the first signs of our winter to come. And Cape Town is ALWAYS cool in March. In fact the cool usually sets in around February. Strange new pattern emerging. Hopefully it's just a wild anomaly. But I rather suspect not.

[Aaron]

just remembered

I just remembered I was using DC mean before.
DC mean over shunt / 0.25 = current X batt = watts.

But with RMS calculation is same depending on which one we want to
use - also depending on what is considered to be accurate, which
depends on which book we read

In any case, I was squaring the rms across the inductive resistor load.
I thought that wattage looked low. Anyway, been months since I did
this. Now I remember.

7+ watts for the light I was making, probably not that good but I'll post
a video later anyway.