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PO Box 716, Amherst, NH 03031-0716

Transformers

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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 at approx 30 khz 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 @ $12.95ea.  100-999 @ $6.95ea.  1000-4999 @ $3.95ea.  5000+ @ $2.95ea.
28K074 Transformer
4000 volt model at 15ma. Similar to above in construction but unpotted.
Quantity
  28K074 - Transformer.............$17.95
10-99 @ $10.95ea.  100-999 @ $5.95ea.  1000-4999 @ $2.95ea.  5000+ @ $2.45ea.
28K077 Transformer 2000 volt model at 10ma 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.

28K077 - Transformer......................$9.95

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. 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 @ $9.95ea.  100-999 @ $5.95ea.  1000-4999 @ $2.95ea.  5000+ @ $1.95ea.

45KV output at .5 JOULES. 1.25" round by 1.25" long in fully potted enclosure.
CD45 - Transformer...............$18.95

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. 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
FLYPVM400 / FLYPVM500

flyback
FLYLABURN

20KV peak at 10 ma with large ferrite core. Easy to wind primary of approximately 50 turns.
FLYPVM+ - 20kV 10mA Transformer....................$49.95

20KV peak at 20 ma with 3" size large 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.
FLYPVM400 - 20kV 20mA Transformer................$49.95

Similar looking to the FLYPVM400 but intended for resonant operation. 30KV peak at 20 ma 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. 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.
FLYPVM500 - 30kV 20mA Transformer................$49.95

10KV peak at 60ma. High output intended for CO2 lasers and as a driver for voltage multipliers up to 300KV at 2ma. With pre-wound primary and low voltage auxiliary.
FLYLABURN - 10kV 60mA Transformer................$59.95

Flyback Experimenters Kit

Flyback Transformer Expeimrnter Kit
    Kit includes the seven following pieces:
  • Three molded units with a secondary inductance of approximately 1 Henry. These units have a built in diode and suggested use is a high voltage circuit that uses it.
  • Open unit with diode that is easily removed. Size is 3 x 2 ½ x 2 ¼" with molded silicon secondary. Inductance is approximately 1 Henry. Easily reworked.
  • Open larger unit without diode Size is 4 x 2 ½ x 2 ¼" with molded silicon secondary. Inductance is approximately 1 Henry. Easily reworked.
  • Smaller unit without diode Size is 3 ¼: x 2 ½ x 2 with molded hard rubber secondary. Inductance is approximately 1 Henry. Easily reworked.
  • Two experimental units that can be used for many projects. There are unassembled parts with a 3500 turn molded secondary.
  • Includes schematics for a 50Kv 5ma supply and a plasma generator.
FLYEXP - Flyback Experimenters Kit..............$34.95

Ferrite "U" Cores for Flyback and High Voltage Transformers
HV Transformer U Cores
All cores are standard ferrite, for high voltage design. Each comes in a set of two (2) pieces.

19134 - (1.9 x 1 x 0.34") ...................10.00/set
151143 - (1.5 x 1.1 x 0.43") ................7.50/set
1651246 - (1.65 x 1.2 x 0.46") .........10.00/set
1631257 - (1.63 x 1.2 x 0.57") .........10.00/set
13759738 - (1.375 x 0.97 x 0.38") ....5.00/set
1298839 - (1.29 x 0.88 x 0.39") .........5.00/set
1510741 - (1.5 x 1.07 x 0.41") ...........7.50/set

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.
4-6KV Transformer
4KV/.03
 3 KV 8ma, floating secondary, sealed unit with leads. 3 x 21/4 x 17/16" at 1.25 lb.
3KV/.008 - Transformer.............$29.95

4KV 30ma, floating secondary open core and coil with wire leads. 43/4 x 311/16 x 23/4" at 4 lb.
4KV/.03 - Transformer...............$59.95

6500V 20ma, floating secondary, open core and coil with wire leads. 43/4 x 311/16 x 23/4" at 5 lb.
Note that this is a full 6500 volts (not 6000v as the product number below may suggest).
6KV/.02 - Transformer...............$64.50

9KV 30ma, mid point grounded secondary, potted core and coil with terminals. 71/4 x 33/4 x 37/8" at 12 lb
9KV/.03 - Transformer...............$79.95

15000 volt 60 ma Current-Limited Luminous Tube Transformer
15KV 60MA Transformer

15kv 60ma Transformer 15kv 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 15000 volt 60 ma current-limited luminous tube transformers. 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. Four units connected in this way can produce 15000 vac rms at 240 ma. This is enough power to make a large TESLA coil easily producing 6+ foot arcs. May also be connected for 7500 volts at 120 ma.

Units are 10-3/4 x 6-3/8 x 5-1/4" and weigh 42 lbs.

A secondary protection circuit schematic designed by DC Cox of Resonance Research is included and must be used for TESLA coil applications. (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...............$259.95

Low Voltage 60Hz Transformers

Low Voltage 60Hz Transformers 		12Volt/.1Amp output with 115VAC input intended for low power circuits. Great for science projects. 1 ½ x 1 ¼" x 1 ¼" metal case with leads and available in 115 or 220 VAC input. Unused and originally boxed items. Purchase includes a 2-wire 6-foot polarized power cord. One order consists of 5 pieces.

12DC115 - 5 Transformers With Power Cords..............$10.00
12DC220 - 5 Transformers With Power Cords..............$10.00

Ferrite "E" Cores and Bobbin Transformer Kits

EC70-50BOB-2.tif 		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
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PO Box 716, Amherst, NH 03031-0716