Talisman III Dynamic Loop Amplifier Systems (TAL/DLS1/3 & TAL/DLS5/3)
Publication Code TAL-DLS-3_TIG Issue 3
Page 6
CONDUCTOR TYPE
COPPER AREA
1/0.8mm
0.5mm sq.
7/0.2mm
0.22mm sq.
13/0.2mm
0.4mm sq.
16/0.2mm
0.5mm sq.
24/0.2mm
0.75mm sq.
32/0.2mm
1.0mm sq.
30/0.25mm
1.5mm sq.
3.
CURRENT / CONDUCTOR GRAPH
Only a single turn loop of cable is normally required.
This assumes that the receiver is 1.5 metres above or
below the plane of the loop.
The graph corresponds to DLS use with the AGC
switched on.
Thus the maximum r.m.s. current in the loop is limited in
the event of fault conditions, such as feedback between
loop and microphone.
If the amplifier is to be used with the AGC switched off, a longer continuous current could be produced under fault
conditions and therefore care should be taken to allow for this in selecting conductor type.
Example:
Aspect ratio (W/L) = 0.8
From the graph: 16m intersects with 0.8 A.R.
n area bounded by upper (UL) and lower (LL) limits of
0.22 and 0.50 mm sq. So either 0.2mm sq. or 0.50mm
sq. may be used.
Current required = 7.8 Amps
20m
16m
L
W
