the pulse of the future directe d energ y incorporated pvx - 4130 6,0 00v pulse generator 0 to 6000v pulse output <60ns rise and fall times <150ns to dc pulse width >10khz pulse repetition frequency optimized to dri ve deflection plates, grids and other capacitive loads protected against arcs, shorts and load transients voltage and current mo nitor outputs t he pvx - 4130 pulse generator produces fast, high vol t- age wave forms to 6,000v. optimized for high impedance capacitive loads, the pvx - 4130 is well suited for driving extraction grid s 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 - 4130 will optimize the performance of any system in which it is used. the pvx - 4130 generates an output voltage pulse of 6,000 volts with rise and fall times less than 60ns, with very flat voltage pulses to dc into a capacitive load. it can gene r- ate singled - ended output pulses from ground to +6000v or from ground to ? 6000v, and can also generate pulses originating from a dc voltage offset from ground by using both vlow and vhigh power supply inputs. this offset can be from ? 6000v to +6000v, with a maximum power supply voltage differential of 6000v. the pvx - 4130 requires a ttl gate signal, a high voltage dc power supply a nd optional dc offset supply inputs. the output pulse width and frequency are controlled by the gate signal. the pulse output v oltage 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 - 4130 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 - 4130 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 - 4130. 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 - 4130.
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 (all specifications measured into a 50pf load connected with 4 feet (~1.2m) of rg - 58 (50 w) coaxial cable) output maximum value: 6000 volts (v high - v low ) minimum value: 0 volts means of adjustment: controlled by power supply input voltages pulse rise and fall time: < 60 ns , typically <52ns (10% to 90%) pulse width: < 150 ns to dc, controlled by input gate pulse recurrence frequency (prf): single shot to 10 khz at 6000v continuous output, maximum limited by power dissipation (1) max. average power: 100 w (v high + v low ) , derated at 2w/ c over 25 c a m- b i ent (1) max. duty cycle: continuous droop: <1% over/undershoot: <5% throughput delay 160ns typical jitter: <1ns shot - to - shot output connector & cable : kings 10kv, rear panel, with 4 feet (~1.2m) rg - 58 (50 w ) coaxial cable input dc voltage +v in (v high ) absolute max. value: + 6000 volts absolute min. value: - 6000 volts relative max. value: + 6000 volts over v low voltage relative min. value: +0v over v low voltage input dc voltage - v in (v low ) absolute max. value: + 6000 volts absolute min. value: - 6000 volts input dc connector s : kings 10kv , rear panel (one each for +v in and - v in ) gate gate source & connector ttl into 50 w , into bnc connector on the front panel voltage & current monitors voltage monitor : 2000:1 into 50 w , bnc connector current monitor : 10a/v into 50 w , bnc connector g eneral support power : 90vac to 240vac, 50/60hz dimensions (excluding co n- nectors) : 19 ?w x 5.2 ? h x 16 ? d (48.25cm w x 13.2cm h x 41cm d) weight (approximate) : 18 lbs. (8.2 kilograms) specifications subje ct to change withou t notice t hese specifications are measured driving a 50pf load connected with 4 feet of rg - 58 cable, at 6000 v output. however the pvx - 4130 can drive loads of a few picofarads to several hundred picofarads of capacitance , limited by its maximum power dissipation capa bility (1) . a t lower load capacitances and/or voltages less then 6000 v, the pvx - 4130 can operate at continuous pulse recurrence frequencies above 10khz . the pvx - 4130 can also drive resistive or inductive loads, within limitations. contact dei for additiona l information and applications assistance. (1) the power dissipated in the pvx - 4130 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 - 4130, 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 - 4130 is 100pf, and rg - 58 cable is 30pf/foot.) given the maximum dissipation of 100w, the maximum load capacitance, frequency and/or voltage at which the pvx - 4130 can operate can be approximated using this formula. this formula a lso 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. doc #9200 - 0215 rev 3 ? directed energy, inc. 2000 45ns rise time, 6000v output (25ns/div horizontal scale, 1.2kv/div vertical scale) 125ns minimum pulse width, 6000v output (25ns/div horizontal scale, 1.2kv/div vertical scale) typical output waveform, 6000v output (2.5 s/div horizontal scale, 1.2kv/div vertical scale) 10khz repetition frequency, 6000v output (50 s/div horizontal scale, 1.2kv/div vertical scale)
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