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PO Box 716, Amherst, NH 03031-0716

Capacitors for High Voltage Applications
Updated  06/24/09


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High Voltage Ceramic Capacitors

All new high quality high voltage ceramic capacitors for voltage multipliers and other high voltage applications. These capacitors can be operated in open air for up to their full rated voltage.

.001 mfd 20 kv in Air with Axial Leads, 0.95” OD x 0.42”, Disk Shaped.
Quantity
  .001M/20KVA ..............$19.95
10-24@ $17.95ea.   25-49@ $15.95ea.   50-99@ $14.95ea.   100+@ $13.95ea.
High Voltage Ceramic Capacitors

.001 mfd 30 kv in Air with Axial Leads, 1.575” OD x 1.13”, Disk Shaped.
This capacitor is much larger that the 20 kv unit.
Quantity
  .001M/30KVA ..............$29.95
10-24@ $26.95ea.   25-49@ $25.95ea.   50-99@ $24.95ea.   100+@ $23.95ea.
High Voltage Ceramic Capacitors

.001 mfd 40 kv in Air with Radial Leads, 1” OD x 5/8”
Quantity
  .001M/40KVA ..............$12.95
10-24@ $11.95ea.   25-49@ $10.95ea.   50-99@ $9.95ea.   100+@ $8.95ea.
High Voltage Ceramic Capacitors
Dual .0033 mfd 30 kv capacitors are internally connected for a voltage doubler circuit capable of 50 to 60 kv at up to 50 ma. Capacitor is potted and has three solderable connections for the mating diodes and external connections. Comes with axial leads or threaded inserts for 6-32 screws. 2.5" x 2" x 1.375".

.003M/30KVD ..............$74.95

Oil Filled Energy Storage Capacitors


High Voltage Stacked Ceramic Capacitors

These capacitor stacks are intended for use in miniature high voltage multipliers. They conservatively produce over 100 kv and require encapsulation. They are excellent for magic shockers, electric paint guns, flocking devices, ionizers etc. Two sections are needed and only require the diode components interconnected to complete the multiplier section.

STACKA - 12 stages 300 pfd at 12 kv 2.7” x .4”..............$24.95
STACKB - 12 stages 350 pfd at 12 kv 2.2” x .4”................POR
STACKC - 12 stages 300 pfd at 10 kv 1.8” x .34”..............POR
STACKD - 12 stages 300 pfd at 10 kv 1.9” x .4” ...............POR
Contact us for further volume discounts.
High Voltage Ceramic Capacitors


Low Cost High Voltage Ceramic Capacitors

These low cost ceramic capacitors are rated for 30 kv when operated under oil or encapsulated. They have radial leads spaced at .7” and can be operated at half their rated voltage in open air.
500 pfd at 30 kv .5” OD x .4 Disk with Radial Leads.
Quantity
  500P/30KV - $2.95
10-49@ $2.45ea.   50-99@ $1.95ea.   100-499@ $1.45ea.   500-999@ $1.25ea.   1000+@ $.95ea.
Contact us for further volume discounts.
High Voltage Ceramic Capacitors
Excellent low cost high voltage capacitors. When used with our high voltage diodes in combination allow the simple construction of multiplier stacks used for obtaining very high voltages. Capacitors are epoxy coated with long length leads. Internally processed ceramic element with stands moderate current discharges. Easily solderable to printed circuit or vector boards.
Ceramic HV Capacitors 5500pfd 15000 vdc heavy duty ceramic capacitors with radial leads. Excellent for higher powered high voltage power supplys and multipliers. Disk capacitor is 1.1” d x .4” l with .8” lead spacing.

5500P/15KVDC.............................................$6.50

Ceramic HV Capacitors
Quantity
.001mfd at 20Kv, .5 x .37", with .5" lead spacing, +80-20%
.001M/20KV..............$2.95
25-99 @ $2.25ea.  100-249 @ $1.95ea.  250-499 @ $1.50ea.  500-999 @ $1.20ea.  1000+ @ $.75ea.
Ceramic HV Capacitors
Quantity
500pfd at 10Kv, .35 x .25", with .45 lead spacing, +80-20%
500P/10KV - Ceramic Capacitor..............$1.50   25+.....$.75
Ceramic HV Capacitors
Quantity
270pfd at 3Kv, .3 X .25", with .5" lead spacing, +80-20%
270P/3KV..............$.75   25+.....$.50

Contact us for further volume discounts.


Photo Flash Capacitors

These compact capacitors have the property of very high storage energy to volume ratio. They can be used for high current single event discharges if certain precautions in circuit design are implemented. Small rail, reconnection, coil, gauss, quench and reluctance guns can be constructed with appreciable velocity and yet still be hand held with properly designed systems.
Photo Flash Capacitors
800mfd, 360Volts, 44Joules, 1.2 x 1.65", with solder lugs
Quantity
  800M/360V - Photo Flash Capacitor………………….$13.95
Purchase of 2 or more will include our EML3 Coil Gun Plans
10-24 @ $10.95ea.  25-49 @ $9.95ea.  50+ @ $8.95ea.
Photo Flash Capacitors
1500mfd, 360Volts, 98Joules, 1.4 x 3", with solder lugs
Quantity
  1500M/360V - Photo Flash Capacitor………………….$19.95
10-24 @ $15.95ea.  25-49 @ $14.95ea.  50+ @ $13.95ea.

Contact us for volume discounts.


High Energy Storage Electrolytic Capacitors

Very low ESR and high tolerance to reverse currents make these high energy density capacitors good candidates for small compact rail guns, coil guns, water exploding, explosive forming, welding, high power magnetizers and other electro kinetic devices. Cylindrical cans with 10-32 high current threaded contact points. Easily connected in series or parallel or combinations of both for specific electrical parameters. DANGEROUS as these charged capacitors can hold lethal amounts of energy indefinitely!

High Energy Storage Electrolytic Capacitors
6000mfd 250 volt
- 200 joules in a cylinder 3” in diameter x 6” in length. With screw terminals.

6000M/250V - Electrolytic Capacitor ..............$34.95

High Energy Storage Electrolytic Capacitors
3300mfd 450 volt
- 335 Joules in a 3 x 6 can with high current screw terminations and 7/16” bottom mounting stud.
Quantity
  3300M/450V - Electrolytic Capacitor made by ITELCON..............$44.95
10+ @ $39.95 ea.
Quantity
  3300M/450V - Electrolytic Capacitor made by Epcos...................$44.95
10+ @ $39.95 ea.
High Energy Storage Electrolytic Capacitors
4700mfd 450 volt
- 475 Joules in a 3 x 6 can with high current screw terminations and 7/16” bottom mounting stud. Epcos brand new and unused.

4700M/450V - Electrolytic Capacitor..............$49.95

High Energy Storage Electrolytic Capacitors
6300mfd 400 volt
- 500 Joules in a 3 x 6” can with high current screw terminations. Cornel Dubilier brand new and unused. 10 of these connected in parallel produce 5000 Joules...good for a portable rail or coil gun.

Quantity
  6300M/400V - Electrolytic Capacitor ..............$44.95
10+ @ $34.95 ea.  25+ @ $24.95 ea.
Oil Filled Energy Storage Capacitors
12000mfd 400 volt
- 960 Joules in a 3 x 9" can made by Epcos. High current terminations and easily combined for higher energies. Excellent for magnetizers, kinetic weapons etc.

Quantity
  12000M/400V - Electrolytic Capacitor ..............$54.95
10+ @ $49.95 ea.  25+ @ $39.95 ea.


Tesla Coil Capacitors

These special designed capacitors are available in a variety of capacitance and ac rms voltage ratings. They are designed to with stand the high reversing currents associated with the high Q primary tank circuits. Housed in cylindrical thermoplastic tubing with end studs for electrical connections. Available in capacitance values from .001 to .1mfd at voltages of 7500 to 32000ac volts rms.

Stock values:
Oil Filled Energy Storage Capacitors
.005mfd at 10KVAC, 1-3/8" x 4-1/4" cylindrical
.005M/10KVAC - Tesla Coil Capacitor..............$59.95
Oil Filled Energy Storage Capacitors .02mfd at 10KVAC 2 3/8" x 7 ½" cylindrical
.02M/10KVAC - Tesla Coil Capacitor..............$229.95

.05mfd at 18KVAC 6 5/8" x 14 ½" cylindrical
.05M/18KVAC - Tesla Coil Capacitor..............$559.95

.1mfd at 20KVAC 6 5/8" x 22" cylindrical
.1M/20KVAC - Tesla Coil Capacitor.................$749.95


Specialized Low Inductance Capacitors
for Ultra High Current Discharges

These low inductance capacitors are excellent for EMP shock pulse generators, exploding wires, Marx impulse generators, Slapper detonators, plasma focused neutron enriching, gas discharge lasers, thermonuclear research, high magnetic fields, etc.

Ultra Low Inductance Capacitor

All new low ultra inductance high voltage specialized capacitors for EMP, Marx generators, voltage multipliers and other high voltage ultrafast discharge applications. Capacitors are cylindrically shaped and have 3/8” brass studs for connections to flat bar or other heavy conductors. Dimensions are 4 inches in diameter x 2 1/2” in length

1M/5KVLOL - 1mfd @ 5kv 10 nh Capacitor ..........$119.95

Oil Filled Energy Storage Capacitors
Oil Filled Energy Storage Capacitors .08 mfd 100 kv, 25 Kilo-amps, <20nano-henries. Capacitor measures 2.3" x 5.9" x 12.8" weighing only 7.5 pounds. A real beauty!!

.08M/100KV - New and Unused Maxwell/GA..............$990.00

Oil Filled Energy Storage Capacitors .04mfd 50Kv, 20 kilo amp, 8 x 5 1/2 x 2 1/2"
.04M/50KV - Low Inductance Capacitor..............$POR
Oil Filled Energy Storage Capacitors

Scyllac Type
1.3 Microfarad 100,000 Volt Energy Storage Capacitor

Here is the holy grail of high energy fast discharge capacitors. These large units are the dream components of many high voltage, high energy experimenters. Capacitor is rated 1.3 mfd at 100,000 volts at a 60,000 amp discharge capability. Ultra low inductance is excellent for shock pulsers, wire exploding, EMP generation, neutron generation, etc.. These capacitors are used but are guaranteed to output between 80 and 90% of their original ratings. Units measure 14”L x 11”W x 25”H and weigh 220 pounds with ground ring terminations. Capacitors are strapped on pallets for shipping by truck. The original cost of these unit are $6700.00.

1.3M/100KV - Storage Capacitor.............$995.00 + Shipping Charges

Call to order and specify any special shipping instructions.
Individual purchase requires our signed  Hazardous Equipment Affidavit available by fax or download from our web site.


Oil Filled Energy Storage Capacitors

Oil Filled Energy Storage Capacitors
10 mfd, 2000 volt, 20 Joules
conservatively rated general purpose oil filled capacitor 7.5” x 4.5 x 2.75” including insulators. Excellent for moderately fast energy discharge. All new and unused with screw terminals. Easily connected in series, parallel or both for many high energy combinations. Brand new and unused with non pcb fill. Manufactured by NWL.

10M/2KV - Storage Capacitor........................................$49.95

Oil Filled Energy Storage Capacitors
900 mfd, 1100 volt, 545 Joules
Excellent for those experimenting with rail, coil guns and other kinetic devices. Unit measures 6.5 x 6.5 x 6" h with high current screw terminations. These non polarized units can easily be combined in series parallel combinations for many specific applications.

900M/1100V - Energy Storage Capacitor..............$149.95

Energy Storage Capacitor
32 mfd, 4500 Volt Energy Storage Capacitor
Brand new and unused metal case capacitors are intended for use in many of our projects. Excellent for coil guns, wire exploding, can crushing, magnetizing and plasma generation. Conservatively rated at 4500 volts with a current rating of over 4000 amps on single event discharges. Connect three in parallel for 1000 joules at over 12000 amps discharge current. Rectangular size 10" x 4 ½" x 3 ½" with an energy storage density of >2 joules/cubic inch.

32M/4500V - Storage Capacitor..............$199.95

4000M 2000V Capacitor
13500 mfd, 1300 Volt, 11500 Joule Oil-Filled Energy Storage Capacitor
Here is the "holy grail" answer to the high energy enthusiast experimenting with electro-kinetic rail guns, coil guns, high energy discharges, magnetizers, etc. Capacitors are un-used in their original packing. Size is 28" x 13-½" x 6-Ύ" and weight is 90 pounds. Capacitors have dual terminals for low inductance or convenient series and paralleling. Ten of these connected in parallel will produce 115,000 joules. May be connected in series for augmented rails, parallel for standard configurations, or used individually for segmented rail systems. These are NWL WA2840 models used by the military for electro-kinetic mortar systems, costing over $2300 each new. Note these units are only available to qualified personnel.

13500M/1300V - Energy Storage ...............$350.00 (Please call us at 800-221-1705 for volume discounts.)

4060 mfd, 2200 Volt, 9825 Joule Energy Storage Capacitor
For above applications but higher in voltage. Internal resistance is 0.34 ohms, single event current > 6000 amps, 54nh parasitic inductance. Capacitors have dual terminals for low inductance or convenient series and paralleling. Capacitors measure 28" x 13.5" x 6.5" and weigh 90 pounds. Brand new in original packing…a real beauty for electro-kinetic applications.

4060M/2200V - Energy Storage .................$450.00 (Please call us at 800-221-1705 for volume discounts.)

View/Download Full Spec Sheet


Capacitors for High Power Multipliers

High Voltage DC Capacitors

Oil Filled Energy Storage Capacitors

Intended for high voltage DC power supplys for filtering and smoothing. Can also be used in voltage doubler circuits. These capacitors are for DC only and will not work in resonant AC circuits.

.02M/16KV - .02 mfd 16 kv in a 1.6" x 3.25" Cylinderical Tube .................$17.95
.047M/10KV - .047 mfd 10 kv in a 1" x 3.875" Cylinderical Tube .............$19.95

Capacitors for HV Multipliers Physically Stackable Capacitors
are intended for easy assembly of multipliers.

.007mfd 20Kvdc, 4-3/4 x 2-1/4 x 1-7/8"

.007M/20KV..............$CALL


HV Rectifiers

High Voltage Rectifiers

100 nanosecond fast recovery devices for use with high frequency switching circuits. Will also work with standard 60hz high voltage transformers.

6000 Volt at 5ma   .3 x .12" epoxy coated cylinder
Quantity
  VG6 - High Volt Diode............$1.95
25-99 @ $1.50ea.  100-249 @ $1.25ea.  250-499 @ $1.00ea.  500-999 @ $.75ea.  1000+ @ $.50ea.
12,000 Volt at 10ma   .625 x .13" rectangular epoxy coated unmarked
Quantity
  VG12 - High Volt Diode..........$1.95
25-99 @ $1.50ea.  100-249 @ $1.25ea.  250-499 @ $1.00ea.  500-999 @ $.75ea.  1000+ @ $.50ea.
16,000 Volt at 5ma  .625 x .13 epoxy coated cylinder
Quantity
  VG16 - High Volt Diode..........$2.95
25-99 @ $2.25ea.  100-249 @ $1.95ea.  250-499 @ $1.50ea.  500-999 @ $1.20ea.  1000+ @ $.75ea.

30,000 Volt at 10ma .6 x .12" epoxy coated cylinder
Quantity
  VG30 - High Volt Diode..........$4.95
25-99@ $3.95ea.   100-249@ $3.55ea.   250-499@ $2.95ea.   500-999@ $245ea.  1000+@ $2.25

Specialized High Quality Custom Capacitors

High Energy Low Inductance Pulse Capacitors

Oil Filled Energy Storage Capacitors For EMP, exploding wires, inertial confinement fusion experiments, plasma focus neutron sources, shock physics, high power gas discharge lasers, metal forming, seismic simulation, Marx generators, shock explosive substitution, linear accelerators.

High Voltage Direct Current Capacitors

Oil Filled Energy Storage Capacitors For high voltage filtering, voltage multiplier circuits for Cockcroft Walton generators.

High Voltage High Frequency Capacitors

Oil Filled Energy Storage Capacitors For Tesla high frequency generators and other RF generators.

High Energy Storage Capacitors

Oil Filled Energy Storage Capacitors Electro-kinetic devices, rail guns, flashlamps, ultra high magnetization, metal forming, spot welding, rock mining.
Click Here for the Capacitor Design Form

Engineering Services


High Voltage Engineering Design Services


High Voltage Design for Research, Trade, Education and Demonstration

We can design or assist in development of high voltage, high current power supplies, pulse conditioning, high energy, EMP, Marx generators, Tesla coils, voltage multipliers, rail and electrokinetic guns, etc. Our facilities are also available for designing and building action displays for museums and electrical demonstrations.

We Will Buy Your Used or Surplus High Voltage Equipment
We are constantly evaluating and purchasing used and surplus high voltage devices and components.

You may contact us or Call: 1-603-673-6493 or Fax: 1-603-672-5406.
Offshore Manufacturing


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Orders: 603-673-6493 | Fax: 603-672-5406 | Inquiries: Email Contact

Please direct inquiries and technical questions/assistance through email; you should get a response within 1 business day.
But before you do this, read the item description thoroughly. Chances are good that you'll find the answers there.


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PO Box 716, Amherst, NH 03031-0716