Sangamo transformer N17-T-72484-6834/881127 need datasheet

[Timothy Rasch]

Hi ,a friend gave Me a box of old parts : transistors ,diodes,switches,transformer,etc . Anyway I need the specification /data sheet for the Sangamo N17-T-72484-6834/881127. I can't find anything on Google.I think it is a Audio output for 6L6 push pull drive, 3 terminals center tapped and other two terminals no tap. The terminals are 12 gauge thick wires going through glass insulators. This could be a special Military type? All metal construction in a hermetacly sealed can. Anyones responce is appreciated!!!!
Tim Rasch [email protected]

[russlk]

The 2 pin winding is probably an 8 ohm secondary. connect an audio oscillator to the secondary and measure the transformation ratio. The power rating can be estimated from the size and weight. What else do you need to know?

[Timothy Rasch]

Hi .I can't tell by measuring on a lcr meter what this transformer is for .Here are the measurements:pins 1.2[60.2 ohms,1.8 henry];pins 3,4[12.8 ohms,.230 henry];pins 4,5[7 ohms,56.2 millihenry]. pin 4 is the middle lead .pins1.2 are isolated from pins 3,4,5. help would be greatly appreciated.
Tim Rasch [email protected]

[rshayes]

The inductance ratios will approximate the square of the turns ratios. Using 4 to 5 as a reference, 3 to 4 will have a turns ratio of 2 and 1 to 2 will have a turns ratio of 32.

If this is an audio transformer, the inductive reactance of the primary will be approximately equal to the load impedance at the low frequency limit of the transformer. For audio, this would probably be around 300 Hz. The impedance of 1.8 Henries at 300 Hz is about 3400 ohms. This would make the impedance across the full secondary about 30 ohms.

The resistance of the full secondary is about 20 ohms. This would make the transformer very inefficient while driving a 30 ohm load. Also, 30 ohms is not a particularly common impedance.

It is possible that this transformer is meant for higher frequency operation. It may be a pulse transformer of some kind rather than an audio transformer.

[Timothy Rasch]

I made measurements on this transformer with a old Olson TE-189 CR analyzer [like Sprague TO-5,Allied 83Y124]I repaired recently which has "the magic eye" 6E5 for null indicator and a turns ratio function. The transformer is a power transformer [60hz]. Here is the data : pins 1,2 primary . pins 4,5 turns ratio is 5.3 ;pins 3,5 turns ratio is
1.79. These are the voltages with 120vrms applied to 1,2 [primary]:
pins 3,5=65vrms;pins 3,4=43.5vrms;pins 4,5=21.7vrms. Pin 4 is the center tap. I can't imagine what this transformer was used for with those strange voltages? Tim Rasch [email protected]