SU109254A1 - Method for measuring the rate of rise of a voltage pulse driving a magnetron - Google Patents

Description

This invention relates to a pulse measurement technique.

The known measurements of the rate of increase of the magnetron exciting pulse are based on our knowledge of the steepness of the front over the time and time; The hefty value of imimage analysis. If they have a short duration, when measuring the time interval of a few hundredths and a half microsecond is required, the measuring equipment is very complex, and the measurement accuracy is reduced. When using the method described below, these drawbacks are compounded by the fact that the instantaneous CKOJIOCTH value of the voltage increase is determined by the value of the capacitive current flowing through the Mainerpon in the jenjiji .iHHOHHHHi not (1dn.

The instantaneous value of the current, nrotekaiu1, it in the pre-generation period through co11), connected in series with the magnetron, can be defined as:

du dt

where is se magdu own capacity ,,

petpona, a -, --- b, i.e.

K; PT1; not a modulating pulse. Having determined the calculated and, 1 and experimentally, the chip of the actual capacity of the magnetron, one can find the slope by the formula

g.volt 1,., b;

microsecond J with c | pf | The method of measuring the steepness in this way reduces to the fact that the section TOKV (section 1CTII capacitive a is in the drawing) is highly appropriate on the usual oscillogram of the current of the phpetron.

Define the SW, the waveform of the oscillogram, find the amplitude value of the anode current and calculate the instantaneous value of the capacitive current at any point of the section a – b. The method allows it to calculate the steepness of the pulse at the point of excitation of the magnetron, which can be detected by a sharp stepwise change in the curvature of the pulse current.

In those cases when the bending) and 1 pulsed 1ka is not clear, you will have the same point as the ne) ehiba at the moment; pooles, the moment of excitement can be determined by chickens and sleep also by the scientific research institute oscillo1) ami mi aHO.Uioio current magne1 () it and ohio6aioHi; eii of the high-frequency cuiua.ia. Nakonen ,,. MAGNETECHRON IK.CHYUCHI1 in den. module with a switched off nitropane. So k-ak cathode MaiTieTpona holol, en, hf () e: it would obviously be a bucket on the capacitive current.

3a () HcoBaji oecn.usri. MmA capacitive current IHoiO and not nohbuzhda1ON1, e1o anodic n; llfnlñenl, include de111 nutrition pack.:. After the heater is warmed up, the magnetron is excited and a capacitance current will be applied to the capacitor ocun; i; ior () a.i.y of the capacitive current. You can use .oiKo () 1ds, 1n 1i lu) i judgments.

Tochostch) H) unit.1aag.mo10 method 8 prn accuracy and s.e;) ei capacity MajTieTooiia normal 1.5 2%.

With the front slope, which) N1) usually has a place for increasing the pulse duration, the accuracy of the recovery method. a flock. 11 () and data from the measurement method of the true CKOpocjb because of the voltage, p) decomposed () to the magnet1), taking into account the distortions, which are distributed by the monitored capacitance, and the connected me a) gadfly n t. d.

The subject is invented and

(lusob measurements of (ascest) asta11i and impulse 1gran keni, excitation1on, e14) magnetron, about ti iichayup1, i) with that, with the purpose of yIlronn of measurement and butn / cc 1i) P1os1i ,) os1L) onrun; 1nuppention of onrede./Es but did not conduct a capacitive current ,, ijipoa-eKaIogo through. magnetro, n in (fedge g-pioneer neryod.