THE PULSE OF THE FUTURE
SPECIFICATIONS (All specifications measured into a 50pF load connected with 2 feet (~0.6m) of RG-62 (93Ω) coaxial cable)
OUTPUT
Maximum Value:
Minimum Value:
Means Of Adjustment:
Pulse Rise And Fall Time:
Pulse Width:
Pulse Recurrence
Frequency (PRF):
Max. Average Power:
Max. Duty Cycle:
Droop:
Over/undershoot:
Throughput Delay
Jitter:
Output Connector & Cable:
±3000 Volts (VHigh - VLow)
0 Volts
Controlled By Power Supply Input Voltages
<25ns (10% to 90%)
<60ns (typically 55ns) to DC, Controlled by Input Gate
Single shot to >25KHz at 3000V continuous output,
maximum limited by power dissipation (1), 5MHz Burst,
Controlled by Input Gate
50W (VHigh + VLow) (1)
Continuous
<1%
<5%
120ns Typical
<200ps shot-to-shot
SHV, With 2 feet (~61cm) RG-62 (93Ω) Coaxial Cable
55ns Minimum Pulse Width, 3000V Output
(25ns/Div horizontal scale, 500V/Div vertical scale)
INPUT DC VOLTAGE +VIN (VHigh)
Absolute Max. Value:
+3000 Volts
Absolute Min. Value:
-3000 Volts
Relative Max. Value:
Relative Min. Value:
+3000 Volts over VLow Voltage
+0V Over VLow Voltage
INPUT DC VOLTAGE -VIN (VLow)
Absolute Max. Value:
+3000 Volts
Absolute Min. Value:
-3000 Volts
Input DC Connectors:
SHV, End Panel (One each for +VIN and -VIN)
GATE
Gate Source & Connector
TTL into 50Ω, into BNC connector on the end panel
VOLTAGE & CURRENT MONITORS
Voltage Monitor:
1000:1 into 1 MegΩ, BNC connector
Current Monitor:
10A/V into 50Ω, BNC connector
<25ns Rise & Fall Times, 3000V Output
(50ns/Div horizontal scale, 500V/Div vertical scale)
Typical Output Waveform, 3000V
(100µs/Div horizontal scale, 500V/Div vertical scale)
GENERAL
Support Power:
Dimensions (Excluding Con-
nectors):
Weight (Approximate):
+24VDC To +28VDC @ 250mA Max Operating Cur-
rent, 1A Starting (inrush) current
9.8†W x 10.2†L x 2†H (249mm W x 259mm L x 51mm
H)
56 Ounces (1.6 Kilograms)
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
These specifications are measured driving a 50pF load connected with 2 feet of RG-62 cable, at
3000V output. However the PVM-4140 can drive loads of a few picofarads to several hundred
picofarads of capacitance, limited by its maximum power dissipation capability(1) . At lower load
capacitances and/or voltages less then 3000V, the PVM-4140 can operate at continuous pulse
recurrence frequencies up to 400KHz. The PVM-4140 can also drive resistive or inductive loads,
within limitations. Contact DEI for additional information and applications assistance.
(1) The power dissipated in the PVM-4140 when driving a capacitive load is defined by the for-
mula CV2F, where C is the total load capacitance, including the capacitance of the load, inter-
connect cable, and the internal capacitance of the PVM-4140, V is the pulse voltage, and F is
the pulse repetition frequency (or the total pulses per second). (For these calculations, the inter-
nal capacitance of the PVM-4140 is 120pF, and RG-62 cable is 13pf/foot.) Given the maximum
dissipation of 50W, the maximum load capacitance, frequency and/or voltage at which the PVM-
4140 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. This formula is not applicable when driving resistive or inductive loads.
>5MHz Burst Frequency, 3000V Output
(250ns/Div horizontal scale, 500V/Div vertical scale)
Doc #9200-0207 Rev 3
© Directed Energy, Inc. 2000
Directed Energy, Inc.
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