AC Cap Dropper DC Power Supply

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Jim Thompson 13 years ago

I know you're a pimp, but I don't think you're dense... just a dense asshole. That's not the real circuit. I walked you thru that this morning. Now go away. ...Jim Thompson

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John Larkin 13 years ago

I said in plain English that a series resistor might be appropriate. In some cases, like a clean low-voltage AC source, it might not be needed. I've done lots of voltage-doubler type supplies with no series R.

John Larkin Highland Technology, Inc jlarkin at highlandtechnology dot com http://www.highlandtechnology.com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom laser drivers and controllers Photonics and fiberoptic TTL data links VME thermocouple, LVDT, synchro acquisition and simulation

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John Larkin 13 years ago

It's what you "wound up with." It's stupid, so now you say it's "not the real circuit." Of course, you won't reveal the "real" circuit... it's proprietary.

Or more likely it doesn't exist. Or it's full of bugs, too.

John Larkin Highland Technology, Inc jlarkin at highlandtechnology dot com http://www.highlandtechnology.com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom laser drivers and controllers Photonics and fiberoptic TTL data links VME thermocouple, LVDT, synchro acquisition and simulation

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John Larkin 13 years ago

Quote Jim:

"That's not the real circuit."

"Once I decide on a configuration..."

So, no good ideas yet? This is awfully simple; what's wrong?

John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators

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Jamie 13 years ago

incandescent lamp in series, drops back down to low R afterwards, keeps every one happy :)

Actually, a depletion mode mosfet inseries with a network can act as a current limiter, give you low Ron values when not hitting the current wall. That should make the heat radiator police happy.

Jamie

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John Fields 13 years ago

In this instance, since you identified the input as "AC LINE" and the thread is about mains driven current limited supplies, your low-voltage driven doublers are irrelevant. Also, the cleanliness of the source has very little to do with what will happen when the mains gets switched into the load at different angles.

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John Larkin 13 years ago

All you do is whine.

Hey, the Blue Angels are buzzing the building. I'm headed for the roof.

John Larkin Highland Technology, Inc jlarkin at highlandtechnology dot com http://www.highlandtechnology.com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom laser drivers and controllers Photonics and fiberoptic TTL data links VME thermocouple, LVDT, synchro acquisition and simulation

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John Fields 13 years ago

All you do is run.

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John Fields 13 years ago

Could also be signs of boredism?

In response to any of _your_ posts, more than likely.

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Jamie 13 years ago

Could also be signs of boredism?

Jamie

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John Fields 13 years ago

-- JF

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Cydrome Leader 13 years ago

ferroresonant transformer- they're peculiar beasts.

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John Fields 13 years ago

Ferroresonant?

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John Larkin 13 years ago

Ferroresonant!

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Cydrome Leader 13 years ago

Not sure anybody cares, but the P3 killawatt meter uses cap shunter power supply. Those thigs have no memory, so if you lose power you lose all your logged data.

I figured, easy, I'll toss a supercap in there, no big deal, and who cares if the display stays on.

Of course that never worked as the current from that power supply was close to nothing and unable to charge the cap in the first place. Even being plugged in for days didn't help as the leakage probably exceeded what the watt meter itself used.

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amdx 13 years ago

Years ago at a hamfest booth, I had a vendor begging me to take one off his table. It weighed about 50 lbs, he was down to $9. It was closing time. I didn't get it. It would still be in my storage. Mikek

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rickman 13 years ago

I swear to god I would never do business with either of you two. You both act like 12 year olds and right here in full public view.

Simply amazing...

Rick

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John Fields 13 years ago

Ferroresonant.

JF

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John Fields 13 years ago

No timely reply? Could it be that, as usual, you dodge the issue when you finally wake up and find yourself with your foot in your mouth? I think so. Post a schematic to prove me wrong instead of your incessant blather.

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John Larkin 13 years ago

that.

custom

I suspect that JT never got a c-dropper circuit that works. His first two tries were duds.

He's not very good once he gets off-chip.

John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators

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AC Cap Dropper DC Power Supply

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