ITT - Index of

ITT3064
TV AUTOMA TIC FINE-TUNING CIRCUIT
COIL DATA FOR DISCRIMINATOR WINDINGS
L, - Discriminator Primary: 3 1/6 turns; #20,
Enamel-covered wire-close-wound, at bottom
of coil form. Inductance of L, = 0.165 fLH;
Qo = 120 at fo = 45.75 MHz.
Start winding at Terminal #6, finish at Terminal
#1. See Notes below.
L, - Tertiary Windings: 2 1/6 turns; #20 Enamel-covered
wire-close wound over bottom
end of L,. Start winding at Terminal #3; finish
at Terminal #4. See notes below.
L -
Discriminator Secondary: 3 1/2 turns;
center-tapped, space wound at bottom of coil
form. Inductance of L" = 0.180fLH; Qo = 150
at fo = 45.75 MHz.
Start winding at Terminal #2; finish at Terminal
# 5, connect center tap to Terminal # 7.
See Notes below.
NOTES:
1. Coil Forms; Cylindrical; 0.30" Dia. max.
2. Tuning Core: 0.250" Dia. x 0.37" Length.
:Material: Carbinal J or equivalent.
3. Coil Form Base: See drawing below.
4. End of coil nearest terminal board to be designated
the winding start end.
ITT3064 Equivalent Circuit
IoF. AMP
OUTPUT 2
BIAS
•
DETECTOA INPUT
,
CORRECTION
VOLTAGE 4
OUTPUT
CORRECT10N
5 VOLTAGE
OUTPUT
J
DETECTOR
INPUT
"s
1000
IF AMP ..,---y-____
INPUT
"6
2 kn
",
Skll
9OO!l ".
V·~.-r--~--~--+---~--~+---~-+--~-------4---------+--+-----~
A9
1.5 kn
8-38