Test circuit

SD2941-10

10/17

DocID11815 Rev 5

5

Test circuit

Figure 12. 30 MHz test circuit schematic (engineering test circuit)

Note:

All dimension are in inches.

Table 9. 30 MHz test circuit component part list

Symbol

Description

T2

1:4 transformer, 25

Ω semi-rigid coax .141 OD 6” Long

FB1

Toroid X 2, 0.5” OD .312” ID 850µ 2 turns

FB2, FB3

VK200

FB4

Shield bead, 1” OD 0.5” ID 850µ 3 Turns

L1

1/4 Wave Choke, 50

Ω Semi-rigid coax .141 OD 12” Long

PCB

0.62” woven fiberglass, 1 oz. copper, 2 sides,

R1, R3

470

Ω 1 W chip resistor

R2

360

Ω 1/2 W resistor

R4

20 K

Ω 10 turn potentiometer

R5

560

Ω 1 W resistor

C1, C11

470 pF ATC chip cap

C2

43 pF ATC chip cap

C3, C8, C9

Arco 404, 12-65 pF

C4

Arco 423, 16-100 pF

C5

120 pF ATC chip cap

C6

0.01

μF ATC chip cap

C7

30 pF ATC chip cap