Self Powered Indicator (end of the story ...)

There you go :)

Jamie

On a sunny day (15 Mar 2014 21:10:50 GMT) it happened Habib Bouaziz-Viallet wrote in :

Oh shut up Habittt you did not even specify the currrent in you so called HV. You should be grateful anybody even pays attention to your mindless unspecified drivel.

Indeed It may blows up in a smoke in case of one MOSFET severe failure !

Yes of course there are some IEC and EN standard specifies these surge transients. Of course i have been reading them from a long time now.

I have been seeing there if someone has already managed this kind of stuff, not seeking about something actually works but just designers's ideas.

Sorry for misunderstanding, Habib.

A small CRT with external deflection plates, with either a CCD to get the spot position servo the tubes anode voltage to keep the spot position constant and you have a nice HV voltmeter :-) Just mask the beam rest position and you have a detector. Would have to be a custom CRT :-(

More practical: a pair of X7R HV capacitors used as tuning caps for an oscillator, then monitor the oscillation frequency. Of course, temperature might be an issue at 50V but this can be calibrated out.

Obviously neither solution is self powered...

That won't work at 2KV DC.

Not really, they're switched capacitor buck/boost regulators, and no mention of Marx or inverse Marx in their description.

No one gives a damm about your opinion, you're too ignorant to matter. Seei ng all the incredible adverse environmental conditions in which PV are used , such as on Mars, outer space, military systems, you couldn't be more wron g.

But,,but,, only REAL engineers drive trains.

YES!!!!

My wife's grandfather worked the C&O as a "conductor" on freight trains, back when all trains had a caboose manned by the train "manager" (conductor). ...Jim Thompson

A solar cell is a great idea. Imagine a high-voltage warning indicator that only works when the sun shines.

at only

Really? And who uses a LED for a HV indicator??? The miniaturized amorphous types output full power a 200 LUX, that's a dark overcast day or ordinary indoor lighting. The OP is as dumb as you are, and that's why he avoids spe cifics about the application because it will unveil even more stupidity.

His problem is well defined. Design something.

that only

ous types output full power a 200 LUX, that's a dark overcast day or ordina ry indoor lighting. The OP is as dumb as you are, and that's why he avoids specifics about the application because it will unveil even more stupidity.

His problem is not well defined at all, and the troll becomes defensive whe n anyone tries to get anything out of him.

com

or that only

phous types output full power a 200 LUX, that's a dark overcast day or ordi nary indoor lighting. The OP is as dumb as you are, and that's why he avoid s specifics about the application because it will unveil even more stupidit y.

hen anyone tries to get anything out of him.

com

or that only

phous types output full power a 200 LUX, that's a dark overcast day or ordi nary indoor lighting. The OP is as dumb as you are, and that's why he avoid s specifics about the application because it will unveil even more stupidit y.

hen anyone tries to get anything out of him.

I'm not a troll like you are insulting me. The problem is quite simple.

U(voltage) detection = [30..3KV], 5KV 20ms surge should power a LED with 1 or 2mA and a,n opamp with 0.5mA under 5V

There is no secrecy on that subject. The indicator is placed in a powertrai n near six huge HV capacitors (no need to explain how usefull this indicato r is). Note that is just an indicator with no explicit reliabilty. No need to explain those points to be able to design something or simply ex pose an idea, but ideas obviously you haven't, and sufficient skills in ele ctronics you haven't and will never have.

I give up.

Habib.

PS : post messages with 80 character/line

Ignore Fred. He doesn't design electronics.

on John Larkin and Jim Thompson ideas)

ic" pn="ECA1EFQ471" type="Al electrolytic"

"C575OX7RIE106M" type="X7R"

Hey John !

I hope things are going smoothly.

BTW Cree and avogotech LED's are really AMAZING !

Just fine, they both on my desk and really it rocks !

Thanks, Habib.

An objective critique of your capability is not an insult, it is an objective critique.

You changed the requirements again...

You're just another "luser" looking for a free lunch, connard.

Looks like you did that long before starting this thread...

Hand waving is not electronic design. I'm surprised you couldn't work an FPGA into the equation, then you go positively ballistic with the hand waving.