the pulse of the future directe d energ y incorporated pvx - 4110 10 ,000v pulse generator 0 to 10, 000v pulse output <60ns rise and fall time s < 20 0ns to dc pulse width optimized to drive deflection plates , grids and other capacitive loads protected against arcs, short circuits and load transients voltage and current monitor outputs t he pvx - 4110 pulse generator produces fast, high vol t- age wave forms to 10,000v. optimized for high impe d- ance capacitive loads, the pvx - 4110 is well suited for dri v- ing extraction grids and deflection plates for electrostatic modulation of particle beams in time - of - flight mass spe c- trometers and accelerators. its robust and versatile design also makes it well suited for pulsing or gating power tube grids, po ckels cells and q switches, acoustic transducers, microchannel plates, photomultiplier tubes and image i n- tensifiers. the exceptional pulse fidelity of the pvx - 4110 will optimize the performance of any system in which it is used. the pvx - 4110 generates an output voltage pulse of 10,000 volts with rise and fall times less than 60ns, with very flat voltage puls es to dc into a capacitive load. it can generate singled - ended output pulses from ground to +10,000v or from ground to ? 10,000v, and can also ge n- e r ate pulses originating from a dc voltage offset from ground by using both vlow and vhigh power supply i n- puts. this offset can be from ? 10,000v to +10,000v, with a maximum power supply voltage differential of 10, 000v. the pvx - 4110 requires a ttl gate signal, a high voltage dc power supply and optional dc offset supply inputs. the output pulse width and fre quency are controlled by the gate signal. the pulse output voltage is controlled by the amplitude of the input dc power supplies . when the input gate is high, the v high supply is connected to the output. when the input gate is low, the v low supply is connected to the output. therefore the pvx - 4110 can be used to generate a negative - going pulse by logically inverting the in put gate, so that the input gate is high until the unit is pulsed. when the input gate goes low, the v low input supply is connec ted to the output, thereby generating a negative - going pulse. the pvx - 4110 features front panel indicator leds to mon i- tor the status of the pulse generator. front panel voltage and current monitors provide a straightforward means to view the outp ut voltage and current waveforms in real - time, eliminating the need for an external high voltage oscill o- scope probe. the pulse generator is a direct - coupled, air - cooled solid - state half - bridge (totem pole) design, offering equally f ast pulse rise and fall times, low power dissipation, and virtually no over - shoot, under - shoot or ringing. it has over - current detection and shut - down circuitry to protect the pulse ge n- erator from potential damage due to arcs and shorts in the load or interconnect cable. all control and protection logic circuitr y, support power, energy storage and output network are incorporated into the pvx - 4110. it can be connected directly to the load , and does not require series or shunt resistors, impedance - matching networks between the pulser and the load, or additional ene rgy storage (capacitor banks). all of this is taken care of within the pvx - 4110.
the pulse of the future directed energy, inc. an ixys company 2401 research blvd., suite 108 fort collins, co usa 80526 970 - 493 - 1901 fax: 970 - 493 - 1903 email: deiinfo@directedenergy.com web: http://www.directedenergy.com specifications output (measured into a 50pf load connected with 4ft rg - 11 cable) maximum value 10, 000 volts (v high - v low ) minimum value 0 volts means of adjustment controlled by power supply input voltages pulse rise and fall time <60ns (10% to 90%) pulse width < 20 0ns to dc, controlled by input gate pulse recurrence frequency (prf) single shot to >1 0 khz, controlled by input g ate (1 ) max. average power 100w (v high + v low ) (1 ) max. duty cycle continuous droop <1% over/undershoot <5% jitter <1ns shot - to - shot output connector lemo era.3s.415.ctl, rear panel output cable 4 ft rg - 11 input dc voltage +v in (v high ) absolute max. value + 10, 000 volts absolute min. value - 10, 000 volts relative max. value + 10, 000 volts over v low voltage relative min. value v low voltage input connector lemo era.3s.415.ctl, rear panel input dc voltage - v in (v low ) absolute max. value + 10, 000 volts absolute min. value - 10, 000 volts input connector lemo era.3s.415.ctl, rear panel gate gate source & connector +5v 1v into 50 w , into front panel bnc conne c- tor voltage and current monitors voltage monitor 2000:1 into 50 w , bnc connector current monitor 10a/v into 50 w , bnc connector general input ac power 90 - 240 vac 50/60hz dimensions 19?w x 7.0 ?h x 21.5 ?d (48.25cm w x 17.8cm h x 54.6cm d) weight approximately 24 lbs (11 kilograms) s pecifications s ubject t o c hange w ithout n otice 9200 - 0211 r ev 2 t hese specifications are measured driving a 50pf load connected with 4 feet of rg - 11 cable, at 10,000 v output. however the pvx - 41 10 can drive loads of a few picofarads to several hundred picofarads of capacitance , limited by its maximum power dissipation ca pability (1) . a t lower load capacitances and/or voltages less then 10,000 v, the pvx - 4110 can operate at continuous pulse recurre nce frequencies greater than 10khz . the pvx - 4110 can also drive resistive or inductive loads, within limitations. contact dei fo r additional information and applications assistance. (1) the power dissipated in the pvx - 4110 when driving a capacitive load is defined by the fo r- mula cv 2 f, where c is the total load capacitance, including the capacitance of the load, inte r- co n nect cable, and the internal capacitance of the pvx - 4110, v is the pulse voltage, and f is the pulse repetition frequency (or the total pulses per second). (for these calculations, the inte r- nal capacitance of the pvx - 4110 is 50pf, and rg - 11 cable is 21.5pf/foot.) given the maximum dissipation of 100w, the maximum loa d capacitance, frequency and/or voltage at which the pvx - 4110 can operate can be approximated using this formula. this formula also approximates the high voltage power supply requirements needed to drive a given load at a specific voltage and frequency. t his formula is not applicable when driving resistive or inductive loads. ~54ns typical rise time, 10, 000v, 1 2 0pf load typical output waveform, 10khz, 10, 000v, 1 2 0pf load ~136ns typical minimum pulse width , 10, 000v, 150pf load
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