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Audio & Interstage Transformers - Open Frame

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10 watts

Ensign audio output transformer. PC mount. 10 watt. 10 tap input with DCR's ranging from 200 to 700 ohm. We do NOT know the corresponding impedances. 8 ohm output leads with spade terminals. 1-9/16" x 1-7/8" x 1-1/4"H.

NOTE: This is a protected component and a specific drawing is not available.

Primary Z: 250/500 ohms (40 ohm DCR)
Secondary Z: 4/8/16 ohms (1.2 ohm DCR)
Dimensions: 3/4"L x 1"W x 3/4"H

Stancor output transformer. 300 mw.

Primary Z: 1000/2000/4000/8000/32000 ohms
Secondary Z: 0.5/2/8 ohms
Frequency Rating: 70 - 10000 Hertz

Beautiful audio transformer made by Microtran. Open frame, epoxy. 10 watts, 1:64 turns ratio.

Primary: 1/2 - 1 - 2 - 4 - or 8 Watts
Secondary Z: 4/8/16 ohms
Dimensions: 1-1/2"L x 1-5/8"W x 1-7/8"H

70.7 volt line transformer.

Primary Z: 20000 ohms @ 10mA
Secondary Z: 300 ohms (425 ohm DCR)
Frequency Rating: 300 - 3500 Hertz

Dual section audio transformer. Rounded corners, aluminum cover. Made in 1968. NSN: 5950-645-3266.

Primary: 470µ H (0.05 ohms DCR) 2.2 Amps
Secondary; 470µ H (1:1 ratio)
Dimensions: 7/8"L x 3/4"W x 3/4"H

Ferrite cored 470 µH: 470 µH PC mount audio transformer.

Primary Z: 75/150/300/600 ohms
Secondary Z: 75/150/300/600 ohms
25 watts

ADC 25 watt audio transformer. Electrostatically shielded. Hermetically sealed. Harris P/N: 478-0239-000.

• 600 ohm c.t. : 600 ohm c.t.
• 600 ohm c.t. : 150 ohm c.t.
• 150 ohm c.t. : 150 ohm c.t.

18 ohm DCR : 24 ohm DCR
Dimensions: 5/8"L x 9/16"W x 9/16"H

Great Electrical Corporation input transformer. 18 ohm DC Resistance to 24 ohm DC Resistance. Not exactly sure what the impedance is of this little jewel. It is excess from a 1980's era manufacturer. 5/8"L x 9/16"W x 9/16"H. Made in Taiwan.

Primary Z: 2500/10000 ohms
Secondary Z: 25000/100000 ohms
Dimensions: 2"L x 2-3/4"W x 3"H

Hard to find antique Hollywood Transformer "Hollytran." Interstage transformer for vacuum tube amplifiers. Octal plug base. All have dual independent windings on the same core. See (CNE) 11P-JACK for mating connector. 2" x 2-3/4" x 3"H. Made in 1950's.

Primary Z: 6250/25000 ohms
Secondary Z: 5/20 ohms
Dimensions: 2"L x 2-3/4"W x 3"H

Hard to find antique Hollywood Transformer "Hollytran." Interstage transformer for vacuum tube amplifiers. Octal plug base. All have dual independent windings on the same core. See (CNE) 11P-JACK for mating connector. 2" x 2-3/4" x 3"H. Made in 1950's.

Primary Z: 50/200 ohms
Secondary Z: 25000/100000 ohms
Dimensions: 2"L x 2-3/4"W x 3"H

Hard to find antique Hollywood Transformer "Hollytran." Interstage transformer for vacuum tube amplifiers. Octal plug base. All have dual independent windings on the same core. See (CNE) 11P-JACK for mating connector. 2" x 2-3/4" x 3"H. Made in 1950's.

Primary Z: 50/200 ohms
Secondary Z: 30000/120000 ohms
Dimensions: 2"L x 2-3/4"W x 3"H

Hard to find antique Hollywood Transformer "Hollytran." Interstage transformer for vacuum tube amplifiers. Octal plug base. All have dual independent windings on the same core. See (CNE) 11P-JACK for mating connector. 2" x 2-3/4" x 3"H. Made in 1950's.

Marked: IND. 200 - 50 H, 100 CPS
Dimensions: 2"L x 2-3/4"W x 3"H

Hard to find antique Hollywood Transformer "Hollytran." Interstage transformer for vacuum tube amplifiers. Octal plug base. All have dual independent windings on the same core. See (CNE) 11P-JACK for mating connector. 2" x 2-3/4" x 3"H. Made in 1950's.

Primary Z: 300/600 ohms @ 10mA DC
Secondary Z: 300/600 ohms @ 22dB
Frequency Rating: 200 - 15000 Hertz

Microtran® audio transformer. 600 ohm C.T. : 600 ohm C.T., 10 madc, 22 dB, 200 Hz - 15 KHz. 1.18" x 0.813" x 0.468". NSN: 5930-00-905-4103.

Primary Z: 300/600 ohms
Secondary Z: 300/600 ohms
Dimensions: 3/4"L x 5/8"W x 5/8"H

Vintage input impedance matching transformer. Used primarily in RTS/Telex intercom matching networks. 600 ohms output Z. 3/4" x 5/8" x 5/8"H. Sold in matched pairs only.

Primary Z: 600 ohms
Secondary Z: 600 ohms
Frequency Rating: 300 - 3500 Hertz

Tamura-Microtran audio coupling transformer. FCC68 coupling. Four pin, no center tap. Model # TTC-110.

Input: 23v
Output: 15.5v, 21.9v, 25v & 70.7v
Watts: 66.6

Foster audio output transformer. 50 Hz - 20 KHz. 66.6 watts.