CordellBenham
Thứ Năm, 27 tháng 3, 2014
Question about a HV Rectifier
I have a kruze electrical testing equipment about a "HV rectifier" times. Probably I am just on the tube, or I am just again something obvious...
Following situation shown is a drawing of a normal spark gap (inventor created with Autodesk)... The idea so far: Take a coil with x coils, in which a voltage is induced by ca 100,000 + at 0.1a. The coil ends are each connected to the outer "pins". The top PIN is sitting halfway between the other two. A cable is connected with a certain load to him (acts so to speak as a plus, ground rod would be minus (just as an example). The frame so non-conductive consists of aluminium,). Now, the Wechelstrom in the coil changes his pole, there would be theoretically always a rollover in the Middle pin, un this always turns. Now the question: dignity it theoretically work, or would a short-circuiting in the Induction coil set up more (by the fact that the spark gap does not delete and remains)? (Yes one allowed by the LUF electron hike the ionisation of the air. It could be about a also be, that they can spread out in one direction only, which in turn would mean that a certain energy is needed to change the direction of ion flow. Therefore, the desired effect of a rectification could be a)
Of course all considerations are here still purely theoretical, but I would be pleased about your comments P.S.: time quite apart from, that would be a rather lossy rectifier, however one has Yes at high voltages
mostly eh not the wide range ;) I can not imagine that that would be effective. It is then practically half of the energy of "verarct". Why do always alternately? The current flows not only from deen outer electrodes after inside, but also from the inner to the outer two ;) What is the other end of your "last"? This will rarely go with only one pole. So, as you're describing that the power is just about both spark gaps from testing jobs end of the transformer to flow and that's it
Thứ Hai, 24 tháng 3, 2014
Ignitor uz ~ 25kV from projector as high voltage source?
I got a "Ignitor", from cable high voltage overhead projector, and wanted to know if and how I as a high-voltage source E.g. for ne SGTC, could take. The inscription 25KV, as well as the 30KV shielding let me first
rejoice, but in the Internet have I very little info about the part can find out just a data sheet about a probably similar igniter on the separated works page
On the label is:
Type: ZG GH
NO.: 32 119 1010
UZ ~ 25kV
IL max 15A =
f = 200-400 Hz
Tu Max ~ 70
According to the information in the data sheet I would assume that I could operate the device with 150-380 V alternating current, the current may be Max 15A...It would come out a HV - AC 200-400 hz.
UM, since I no power high voltage cables , laboratory with e.g. 150 V have I this thing can connect to the 230V socket in just trial and Zainab nen few sparks (the circuit inside runs the "juice" itself pointed needs) for a short time? During continuous operation I'd come me something stable, when I have more data, as well as the certainty of functioning of the ZG... Links to pictures should be below... This transformer is the ignition in an Argon laser probably to a V004 which was intended only for ignition pulses, similar to. The way this works then, that by means of a thyristor a capacitor in the primary coil is discharged, resulting in secondary a HV impulse. Special about it is that such transformers are usually only a few coils allow the full operating power for the lamp on the HV winding to flow after the ignition. The ignition transformer is switched in series to the lamp, so to speak. Miss the DC_Widerstand of the HV winding it with an ordinary ohmmeter. Would be interesting, whether it is in fact relatively low impedance (only a few ohms), if yes, then my theory is confirmed, if not, I apologize probably I am firmly convinced that you're right, kilovolt.
IL is probably the lamp power and whose 15A flow - due to wiring as overlay ignition - also through the coil.
What testify against KV's and µ~'s is on the second image the lamp directly to the ignition device angelossen is without additional stromqelle in series or similar
Just try and turn that device a miss if you can output voltage and check whether a spark is created (but please with resistance and no short circuit) I think I only because the part has been Yes a stand-alone component, is
within the OHP (overhead projector) to the mains voltage connect that there is Yes E.g. no colour coding of the cable polarity. I'm a year from the
Wire dumpster, or the OHP FH slaughtered. It is really funny that I can't find anything on info on the net about it. Grad I am considering whether the unit can withstand 36V / 500ma DC, this is the maximum voltage that I can offer Netzteilmässig and then let's see what the output cables provide the instrument. I don't know the ohmic value of now just like I
HV primary coil can be measured. Everything is cast up on the IN / OUT cable...
THEORETICALLY I can Sami... but for a short period time which create 220v AC, and check on spark, but Wallace then because of this in hindsight stupidity is broke!
Is there a another way to check out or anyone any information about the part (links etc....? Hang but just 12-24 Vac at the entrance, then not much happen kan. And then check the output hold time. This seems to be a superimposed ignitor for lamps: the 2 thin wires be connected to the lamp ballast. Moreover, the ignitor gets its operating voltage.
The device then creates high-voltage pulses of up to 25kV, issued in addition to the input voltage at the output. These impulses are there to light the connected lamp. Once the lamp has the ignitor behaves passively; and the lamp current flows unhindered by the ballast by the ignitor to the lamp.
These ignitors seem a necessary accessory for the electronic ballasts also offered the Schieder factory Web site (therefore also the 200-400 Hz input frequency).
If the part not at 50 Hz, then's is pretty much unusable for HV attempts. I'm also pretty sure that the device delivers only HV pulses with low energy.
If it's running at 50 Hz, you can take the ignitor good to ignition by arcs at low voltages (mains voltage Jacob's ladder or similar: D)
Power supply for generating of DBD plasma
I would like to HV technician jobs a plasma by silent discharges (dielectric barrier discharge, DBD) and need a high frequency high voltage power supply with approximately 5-15 kV (peak-to-peak) and a frequency of approx. 10-30 for kHz. The required current is a few mA.
In a magazine article I read that such a PSU from a car's ignition coil and a MOSFET can be built. Unfortunately, there, however no details to the construction are described. Now, my question is whether anyone of you ever has done this before and if so, what it exactly looks like.
There were also others (easy to be around) way to build up the required power supply? at this frequency, auto ignition coils are hardly used.
What I would recommend would be a line transformer from an old TV.
They provide typically voltages to 24kV around, 5-15kV are no problem for such. However, these have as just a DC voltage on the output occurs to me. Is this ok or do you need AC? In the case, my preferred solution would be a self filled line transformer core. Estimated up to 25kV (AC), one ran at me. Only at 30-40kV he worked then but internally. I worked on this several hours the material costs amounted to, but on < €1.
I would use Ozoniser "Britzelgenerator" as a control. With this you can change the frequency and the output voltage can be regulated via a change in the input voltage or changing the primary winding number.
The circuit is a few € in short time without extensive experience Solderable material costs! Up to what frequency the circuit with a coil would be going to realize?
The specified 10-30 kHz are a pure guess. Probably even 5 kHz would be sufficient.
In any case, AC but is required to maintain the plasma. Grad again looked on the home page of Paul, his is a ZS at less than 10 kHz.
I'm sorry, because I told crap.
The circuit linked by HV testing can be used also for ignition coils!
How to connect it you can see here at Paul: http://mosfetkiller.de/?s=zuendspulen
But, I would use the Britzelgenerator of Ozoniser from the tutorial, which should be much more efficient due to the driver transistors! An AC transformer is the best solution for that! Ignition coils have an iron core, which makes a few kHz.
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