175 MHz Test Circuit Schematic (Production Test Circuit)

+50V

175 MHz Test Circuit Component Part List

T1

4:1 Transformer, 25 ohm Flexible Coax .090 OD 6 ” Long

T2

1:4 Transformer, 25 ohm Semi-Rigid Coax .141 OD 6 ” Long

FB1

Toroid X 2, 0.5” OD .312” ID 850u 2 Turns

FB2, FB3

VK200

FB4

Shield Bead, 1” OD 0.5” ID 850u 3 Turns

L1

1/4Wave Choke, 50 ohm Semi-Rigid Coax .141 OD 12 ” Long

PCB

0.062” Woven Fiberglass, 1 oz. Copper, 2 Sides, er = 2.55

R1, R3

470 ohm 1W Chip Resistor

R4

20K ohm 10 Turn Potentiometer

R2

360 ohm 1/2W Resistor

R5

560 ohm 1W Resistor

C1, C11

470 pF ATC Chip Cap

C7

30 pF ATC Chip Cap

C2

43 pF ATC Chip Cap

C10

91 pF ATC Chip Cap

C3, C8, C9

Arco 404, 12-65 pF

C12, C15

1200 pF ATC Chip Cap

C4

Arco 423, 16-100 pF

C13, C14

0.01 uF / 500V Chip Cap

C5

120 pF ATC Chip Cap

C16, C17

0.01 uF / 500V Chip Cap

C6

0.01 uF ATC Chip Cap

C18

10 uF 63V Electrolytic Capacitor

Note : All dimensions in inches

REF. 1021579C

SD2921

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