10W HF Linear PA kit assembly 1.00 2
Contents
1. Introduction .............................................................................................................................................................. 3
2. General Assembly guidelines .................................................................................................................................... 3
3 ASSEMBLY ................................................................................................................................................................. 4
3.1 Parts list ............................................................................................................................................................. 4
3.2 Trace diagram and parts layout ........................................................................................................................ 7
3.3 Schematic .......................................................................................................................................................... 9
3.4 Wind and install inductor L201 ....................................................................................................................... 10
3.5 Wind and install transformer T201 ................................................................................................................. 11
3.6 Wind and install transformer T202 ................................................................................................................. 13
3.7 Wind and install transformer T203 ................................................................................................................. 14
3.8 install capacitor C213 ...................................................................................................................................... 16
3.9 Wind and install transformer T204 ................................................................................................................. 16
3.10 Install capacitors C211 and C212 .................................................................................................................... 18
3.11 Install remaining ceramic capacitors .............................................................................................................. 18
3.12 Install inductors L202, L203, L204 and L205 ................................................................................................... 19
3.13 Install resistors R203, R204, R209, R210 ......................................................................................................... 19
3.14 Install resistors R201, R216 and R217 ............................................................................................................. 20
3.15 Install resistors R207 and R208 ....................................................................................................................... 20
3.16 Install resistors R213 and R218 ....................................................................................................................... 21
3.17 Install resistors R212 and R214 ....................................................................................................................... 21
3.18 Install resistor R202......................................................................................................................................... 22
3.19 Install resistor R205......................................................................................................................................... 22
3.20 Install resistor R206......................................................................................................................................... 23
3.21 Install trimmer resistors R211 and R215 ......................................................................................................... 23
3.22 Install capacitor C204 ...................................................................................................................................... 24
3.23 Install capacitor C214 ...................................................................................................................................... 24
3.24 Install diode D201 ........................................................................................................................................... 25
3.25 Install transistor Q201 ..................................................................................................................................... 25
3.26 Install transistors Q202, Q203 and Q204 ........................................................................................................ 26
3.27 Install transistors Q206 and Q209 .................................................................................................................. 26
3.28 Install transistor Q205 ..................................................................................................................................... 27
3.29 Install voltage regulator IC201 ........................................................................................................................ 27
3.30 Install transistors Q207 and Q208 .................................................................................................................. 28
3.31 Install heatsink ................................................................................................................................................ 30
4 Applications information ........................................................................................................................................ 32
4.1 PA Precautions ................................................................................................................................................ 32
4.2 Connections .................................................................................................................................................... 32
4.3 Adjustment ...................................................................................................................................................... 32
4.4 Tests undertaken ............................................................................................................................................ 33
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