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Miniature Ferrite High Frequency Transformers

These small lightweight high efficient units were designed in our USA laboratories and manufactured in our HK facility. They are intended for field chargers, ion supplies, plasma power sources, hand held rail and coil guns, anti gravity, ozone, air purification and other small high voltage applications requiring 12 volt input. Purchase of three or more units will include a working circuit diagram with all instructions.

Volume discounts are readily available.
28K089 Transformer
7000 volt model at 10ma, 20kHz-100kHz operating frequency, in potted 1 x 1 x 1" potted enclosure with PC board pins.
This transformer may be used in self oscillating circuitry where the feed back winding is utilized or, in a conventional timer controlled inverter circuit. Operates with 9 -14 vdc input.
Quantity
  28K089 - Transformer.............$19.95
10-99 @ $13.95ea.  100-999 @ $7.95ea.  1000-4999 @ $4.95ea.  5000-9999 @ $3.95ea.  10K+ POR
28K074 Transformer
4000 volt model at 15ma, 20kHz-100kHz operating frequency. Similar to above in construction but unpotted, 7/8" x 7/8" x 3/4".
Quantity
  28K074 - Transformer.............$17.95
10-99 @ $11.95ea.  100-999 @ $6.95ea.  1000-4999 @ $3.95ea.  5000-9999 @ $3.45ea.  10K+ POR
28K077 Transformer
2000 volt model at 10ma, 20kHz-100kHz operating frequency, intended for light sabers, shockers etc. Small size of .7" diameter x 11/4"length fits into a 7/8" ID tube. Uses solderable pins for terminations and high voltage lead for output.
Quantity
  28K077 - Transformer.............$9.95
10-99 @ $7.95ea.  100-999 @ $5.95ea.  1000-4999 @ $3.45ea.  5000-9999 @ $2.95ea.  10K+ POR


High Voltage Pulse and Trigger Transformers

These high voltage pulse transformers supply the voltage pulses used for igniters, shockers, stun guns and triggers for laser flash tubes and high power spark switches. They are used with capacitor discharge circuitry where a capacitor is charged and then allowed to discharge into the primary where a high voltage pulse is generated in the secondary output winding. The high voltage output pin is isolated with connection leads on the opposite end.
CD25B Transformer

CD45 Transformer

25KV output at .5 JOULES, 50-10ms exponential ring down time. Use a 300 volt 1 mfd capacitor with sidac trigger for line direct operation or conventional inverter with SCR. 1" round by 1.25" long in fully potted enclosure.
Quantity
  CD25B - Transformer.............$16.95
10-99 @ $12.95ea.  100-999 @ $9.95ea.  1000-4999 @ $4.95ea.  5000+ @ $1.95ea.

45KV output at .5 JOULES, 50-10ms exponential ring down time. 1.25" round by 1.25" long in fully potted enclosure.
CD45 - Transformer...............$29.95

High Voltage Switching Transformers

These high frequency, high voltage transformers are designed for many specialized applications such as solid state Tesla coils, plasma displays, Jacob's Ladders, drivers for DC multipliers or general purpose high voltage sources. High quality silicon rubber potting is used for the secondary coil. Output is a flexible silicon insulated lead.
12,000 Volts at 35 ma, 20kHz-30kHz operating frequency. lanced output center point grounded is intended for large Jacobs ladders, neon tube power supplies, plasma arc sources etc. Easily riven with our one half bridge 115 vac power supply with included schematic. Transformer has auxiliary 12 volt output winding, over volt sense coil and split secondary for fault current shutdown safety circuitry. This transformer was designed in our labs or high powered neon displays and is built to the latest UL specifications.
Quantity
  TRAN1035 - With Circuit Schematic..............$49.95
10-99 @ $39.95ea.  100-499 @ $29.95ea.  500+ @ $24.95ea.
flyback 40KV peak at 10ma with large ferrite core measuring 3 ¾ x 3 ½ x 5/8”allows adequate clearance for higher voltage windings. 15kHz-60kHz operating frequency. Easy to wind primary of your choice. Allows more clearance for higher operating voltages of the below coil sections shown for PVM400 & 500. Here is an example of a PVM500 schematic.
FLYPVM+ - 40kV 10mA Transformer....................$69.95
flyback
FLYPVM400
20KV peak at 20ma, current limited 15kHz-60kHz operating frequency, with 3" size large UU60 ferrite core and flexible silicon output lead. 4000 turns #37 on secondary with silicon output lead. Primary is easily wound and takes from 50 to 100 turns dependent on input driving circuitry. Core is air gapped and can easily be changed if needed for controlling secondary current. For end point grounded circuits. Excellent for powering plasma loads, displays, jacob’s ladders or other negative resistance loads. Short circuit proof. (We can manufacture these, and variations, in large volume for the trade; contact us by phone 603-673-6493 or .) Here is an example of a PVM400 schematic.
FLYPVM400 - 20kV 20mA Transformer................$59.95
flyback
FLYPVM500
Similar looking to the FLYPVM400 but intended for resonant operation. 30KV peak at 20 ma, 15kHz-60kHz operating frequency, with 3" size large ferrite core and flexible silicon output lead. 2500 turns #35 on secondary with silicon output lead. Primary is easily wound and takes from 50 to 100 turns dependent on input driving circuitry. UU60 large core is air gapped and can easily be adjusted to change the resonant frequency. Output voltage will vary as to the external load complexity being the load capacity and resistance. For end point grounded circuits. (We can manufacture these, and variations, in large volume for the trade; contact us by phone 603-673-6493 or .) Here is an example of a PVM500 schematic.
FLYPVM500 - 30kV 20mA Transformer................$59.95
flyback Capable of providing 10KV peak at 60ma, 15kHz-60kHz operating frequency. High output intended for CO2 lasers and as a driver for Cockroft Walton voltage multipliers up to 300KV at 2ma. With pre-wound primary and low voltage auxiliary. Low leakage inductance as primary and secondary are on same leg of a 2.75 x 1.325 x 0.675" U core set. Secondary is wound with 2500 turns of #34 wire. For endpoint grounded circuits. (We can manufacture these, and variations, in large volume for the trade; contact us by phone 603-673-6493 or .) An example of a working FLYLABURN circuit schematic is available by purchasing our LABURN20 plans ($3.00) by download.
FLYLABURN - 10kV 60mA Transformer................$69.95


Ferrite "U" Cores & Rods for Flyback and High Voltage Transformers

All cores are standard ferrite, for high voltage designs. Each U-core purchase comes as a set of two (2) pieces. Each rod comes as a set of a single (1) piece.

Free HV Ferrite Transformer Design

All Ferrite Core dimensions listed as (Height x Width x Thickness):
FC030201 - (0.345 x 0.20 x 0.160") ........$3.00/set
FC060402 - (0.610 x 0.44 x 0.260") ........$5.00/set
FC080702 - (0.810 x 0.71 x 0.240") ........$5.00/set
FC080602 - (0.875 x 0.60 x 0.225") ........$5.00/set
FC100702 - (1.000 x 0.75 x 0.250") ........$5.00/set
FC120803 - (1.290 x 0.88 x 0.390") ........$5.00/set
FC130903 - (1.375 x 0.97 x 0.380") ........$5.00/set
FC151004 - (1.500 x 1.07 x 0.410") ........$7.50/set
FC151104 - (1.500 x 1.10 x 0.430") ........$7.50/set
FC161204 - (1.650 x 1.20 x 0.460") ......$10.00/set
FC161205 - (1.630 x 1.20 x 0.570") ......$10.00/set
      HV Transformer U Cores


FC3205 - Ferrite Rod, single (1) piece, 3.20" length x 0.5" diameter ......$5.00/ea


High Voltage 60Hz Transformers
for Tesla Coils, Capacitor Chargers, etc.

Current limited transformers are excellent for small Tesla coils up to 1 KW using stationary spark gaps.
115 vac 50/60 hz input units can be series or parallel connected for 220 volt operation and a large combination of output voltages and currents.



Current-Limited Luminous Tube Transformer at 30ma and 6KV

6KV 30ma, centerpoint grounded secondary, current limited, encased unit with screw terminals. This transformer is excellent for small table top Tesla coils and is used in our new and revised BTC3K kit and BTC30 ready-to-use Tesla coils. Dimensions: 10 3/8 x 3 5/8 x 3 1/4” with a weight of 11.4lbs. Shipping weight is approximately 17 pounds and may exceed $25.

6KV/.03EN - Transformer...............$69.50



Current-Limited Luminous Tube Transformers at 60ma and 15KV or 9KV
15KV 60MA Transformer

15kv 60ma Transformer 15kv 60ma Transformer 9kv 60ma Transformer

60ma transformers require signing our
>> Hazardous Equipment Affidavit <<
that can be faxed or emailed back to us.

DANGEROUS PRODUCT -- CAN CAUSE ELECTROCUTION IF IMPROPERLY HANDLED

We have purchased tooling for and now have our own current-limited luminous tube transformers at 60 ma with 15000 or 9000 volt output. These units will have our name with logo on them and are only available through us. They are also available for volume purchasing.

These are brand new, factory-fresh transformers. They DO NOT contain the bothersome ground fault interrupter that makes them difficult to use for TESLA coils and other scientific applications. Operates from 115 vac and are easily parallel connected for higher power operation. (For example, six of the 15KV/60MA units connected in this way can produce 15000 vac rms at 360 ma. This is enough power to make a large TESLA coil easily producing 10+ foot arcs.) May also be connected for 7500 volts at 120 ma (9KV/60MA provides 4500v at 120ma).
The 15KV/60MA units are 10.75 x 6.4 x 5.25" and weigh 42 lbs.
      Note that shipping weight is approximately 52 pounds and will exceed $25.
The 9KV/60MA units are 13.25 x 5.75 x 4.75" and weigh 29 lbs.
      Note that shipping weight is approximately 37 pounds and will likely exceed $25.

A secondary protection circuit schematic designed by DC Cox of Resonance Research is included and must be used for TESLA coil applications, to protect the high voltage secondary from high frequencies, current, and voltage transients. (See the PDF schematic here.)

All units are open circuit tested at 1.2 x 120 vac for six hours before shipping.

15KV/60MA - Transformer ............................................$299.95
9KV/60MA - Transformer (used in the BTC40) .........$249.95

SUP1K - HV Suppression Circuit, Kit and Plans ......$120.00
SUP10 - HV Suppression Circuit, Assembled ..........$199.50

15KV 60MA Transformer
SUP10


Pole Transformer

14.4KV Pole Transformer
DANGEROUS PRODUCT -- CAN CAUSE ELECTROCUTION IF IMPROPERLY HANDLED

Heavy duty 14.4KV (very conservatively rated), 1- or 2-bushing oil filled unit, running on 220/110VAC input. Good for Tesla Coils, up to 12 ft. discharges! Price does not include extra shipping and handling charges. Sold only to qualified researchers and labs.

5KVA14.4KV - 5 KVA 14.4 KV Pole Mount 240/480 1PH 2 Bush AL Wire ............$695.95
            ~250lbs, 42"H x 14.5"D (21" w/attachments)
7.5KVA14.4KV - 7.5 KVA 14.4 KV Pole Mount 240/480 1PH 2 Bush AL Wire ......$695.95
            ~250lbs, 42"H x 14.5"D (21" w/attachments)
10KVA14.4KV - 10 KVA 14.4 KV Pole Mount 240/480 1PH 2 Bush AL Wire ........$695.95
            ~250lbs, 42"H x 14.5"D (21" w/attachments)
15KVA14.4KV - 15 KVA 14.4 KV Pole Mount 240/480 1PH 2 Bush AL Wire ........$795.95
            ~350lbs, 34.5"H x 18.5"D (24" w/attachments)
25KVA14.4KV - 25 KVA 14.4 KV Pole Mount 240/480 1PH 2 Bush AL Wire ........$895.95
            ~300lbs, 37.5"H x 16.5"D (23" w/attachments)

These transformers require signing our
>> Hazardous Equipment Affidavit <<
that can be faxed or emailed back to us.

Low Voltage 60Hz Transformers

Low Voltage 60Hz Transformers 220VAC input with 12VDC/.1A output intended for low power circuits. Great for science projects. 1 ½ x 1 ¼" x 1 ¼" metal case with leads. Unused and originally boxed items. Purchase includes a 2-wire 6-foot polarized power cord. One order consists of 5 pieces.

12DC220 - 5 Transformers With Power Cords..............$20.00


Ferrite "E" Cores and Bobbin Transformer Kits

EC70-50BOB-2 Easy to wind bobbin for many electronic projects. Easy to use providing a wide range of voltages and currents. An example circuit schematic is included.

3 x 2-1/4" x 5/8", 3C80 material good for up to 1 mHz, u=2000, 500 watts
EC70BOB - Bobbin and Core..............$19.95

2 x 2-1/4" x 1/2", 3C80 material good for up to 1 mHz, u=2000, 300 watts
EC50BOB - Bobbin and Core..............$14.95



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Orders: 603-673-6493 | Fax: 603-672-5406
Email: Sales & Orders | Email: Tech Support

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PO Box 716, Amherst, NH 03031-0716