JBL Model 5901 Universal Mic Input XFMR

CJ

Well-known member
Joined
Jun 3, 2004
Messages
14,147
Location
California
really a nice piece of iron, it was a joy unwinding 8060 turns of #45, but hey, i'm jus sayin,

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the jaws of Death...

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CJ

Well-known member
Joined
Jun 3, 2004
Messages
14,147
Location
California
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off with the head>

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this thing is built, check the drive pins, what a pain,

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i swear this stuff smells like plumbers putty,

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Lams:  24-25 EL - 80 Ni with Insulaze coating, .014 thick, square stack, 1 x 1 , 

Pri: 403 T #36 green wire,  L - 6.6 Henries  D: 1.43 DCR-31 Ohms  Start Pin 8 - Finish Pin 5

Cu Foil E Shield between pri and sec, soldered brn wire,

Sec: 8060 T #45 green wire, L-  2,400 Henries (est) D: .62 DCR - 2.8 K Ohms S - Pin 1 F -Pin  9

Turns Ratio - 1 : 20

Impedance Ratio; 1: 400

Input Impedance: 50 Ohms

Output Impedance: 20 K Ohms

 

CJ

Well-known member
Joined
Jun 3, 2004
Messages
14,147
Location
California
finally the print>

 

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CJ

Well-known member
Joined
Jun 3, 2004
Messages
14,147
Location
California
it is a 9 pin octal, weird,

shield is pin 4 and is now marked,

cj
 
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