EveryCircuit - For wtf circuit.220vac to 1kv dc

thebugger

10 years ago

You can't choose the ground position on random. It's always fixed at one point of the mains.

hurz

10 years ago

Buggzy, in simulation you can choose the point of ground wherever you want!

nikisalli

10 years ago

Andrea pigghj mocc😉

rich11292000

10 years ago

Wtf wouldnt do that in real life, but yra would.

Lucan01

10 years ago

Yra would do it.

thebugger

10 years ago

In simulation yes, but try to apply this in reality. It's a short circuit.

Cjpower

10 years ago

This circuit funonzia in real life

thebugger

10 years ago

No funziona

hurz

10 years ago

Buggzy, were do you see a short! You see things which are not there. Its your imagination which sees a second ground! This system is separated and does not have connection to an external second one. Ground is here a single spike and can be connected wherever you want!

Cjpower

10 years ago

This circuit is the power of a valve type PL504

hurz

10 years ago

I'm just talking about the possibility to place Ground. BTW, this circuit seems to be bullshit.

thebugger

10 years ago

A power source presented this way, must refer to mains. With mains one end of the source will always be grounded. If he'd add a transformer, the problem is fixed, but as this is, it's completely unacceptable. Ah an PL500/PL504 has a maximum static voltage of 275V, with a dynamic swing reaching 550V maximum. This circuit will overdrive a PL504 tube.

thebugger

10 years ago

Hurzy just add a ground at one end of the power source, AS IT IS APPROPRIATE, and you'll see what I'm talking about. Not a complete short, but the only thing holding back a complete short is the 4ohm resistor.

Cjpower

10 years ago

I use this circuit for my vttc whit pl500/504 and function

Cjpower

10 years ago

pl504 holds the voltage of anodic from 7Kv

thebugger

10 years ago

Yes that's a pulsed absolute maximum. It can safely handle 275V in static mode / 550V in dynamic.

hurz

10 years ago

Buggzy, there are to reason to place a ground! One is to represent "ground" as a real Earth signal. But in most cases "ground" is just used as reference to your black wire of measurement equipment!!!! As in this case!

thebugger

10 years ago

Yes ground is just a potential reference, but as i said, there is no mains in the world, left ungrounded. They're all unbalanced. And a signal source at 320V can only represent one thing - mains

hurz

10 years ago

No

thebugger

10 years ago

What, no? I haven't seen an ungrounded home appliance, have you? The power supply here is floating, whereas it should be grounded. If he were to add a galvanic separation, then I'll be inclined to agree, but as it is, it's incorrect. Moreover at such continuous voltages a PL500/PL504 will be severely damaged, not to mention that the ripple is huge, and it'll couple in to the output, making the PL500 virtually unusable.

thebugger

10 years ago

Cjpower i suggest you take a look at the PL504 data sheet. It states that 7kV is the absolute maximum pulsed voltage it could withstand. A continuous working (and static) voltage is 275V with cathode current of 250mA. The dynamic maximum voltage is 550V, which is what you get after adding an impedance matching transformer. But since 550V is the peak, the average is still 275V.

thebugger

10 years ago

I suspect you wanted to make a voltage doubler. Just use a bridge rectifier, it'll get you 275V if you're in Europe. If you're in America, then use a voltage doubler.

Cjpower

10 years ago

Thebugger,the ground in real life do not have to put on that point , which I have given them only to ensure

thebugger

10 years ago

No the ground is always fixed at one end of the power source. To decouple it from ground you must add an isolation transformer.

thebugger

10 years ago

No the ground is always fixed at one end of the power source. To decouple it from ground you must add an isolation transformer.

Cjpower

10 years ago

I have a vttc whith this schematic

thebugger

10 years ago

Look I'll post the correct schematic with the correct parameters for PL504. Search for PL504 PSU

hurz

7 years ago

As long you do not connect external something to ground, your circuit with bulky transformer is much more expensive for no reason. Check your circuit without transformer, it does the same! http://everycircuit.com/circuit/6458906489651200