Qty 4 - Lundahl LL1575 1:1 Isolation Amorphous Transformer

Description

Lundahl LL1575 1:1 Isolation Transformer.
PRICE of .00 is for FOUR Transformers, free shipping.
In my experience these make excellent low level audio isolation / matching transformers.
I'm an individual selling excess items before a move. No returns. If you would like pictures of the resistances across the terminals, please let me know; I am happy to provide those. That being said, these items have never been soldered.
LL1575
The
LL1575
is a high-bandwidth transformer designed for CCTV (closed circuit television) use, but
can be useful in certain broadcast applications
. It can be used where there are differences in earth potential between video circuits, such as between different locations on a site, which can cause disturbance to the video signal with the introduction of supply frequency noise ("hum") and at worst can be a safety issue.
Due to the very wide bandwidth requirements of TV applications, the
LL1575
is wound with a special, bifilar winding technique and uses Lundahl's
proprietary amorphous strip core
. PCB pins require 1.5mm hole, and are spaced 5.08mm apart, 22.86mm between rows.
Technical Note:
Whilst
the transformer is capable of broadcast-class performance
, by it's very nature, it blocks the DC part of the luminance information, which has negligible effect on picture quality in most circumstances.
Technical Specification:
Turns ratio:
1 : 1
Primary impedance:
>3500ohms, 300Hz, 7V rms, no-load
Frequency response:
20Hz -11MHz
+0, -3dB. 1Vpp sine, source and load 75ohms
Signal loss:
0.5dB, source and load 75ohms
Isolation:
2 kV rms, primary - secondary
Static resistance:
4.5ohms each, primary and secondary
Dimensions:
28(l) x 21(w) x 14(h) mm, height is above PCB
Weight:
22 g