Communication-concepts EB104 Engineering Bulletin Manual de usuario descargar pdf (Pagina 2)

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2 RF Application Reports

R1 – R5 — 10 k Trimpot

R6 — 1.0 k/1.0W

R7 — 10 Ohms

R8 — 2.0 k

R9, R21, R22, R23, R24 — 10 k

R10 — 8.2 k

R11, R12, R13, R14 — 100 Ohms

R15, R16, R17, R18 — 2.7 Ohms

R19, R20 — 10 Ohms/2.0 W Carbon

R25 — Thermistor, 10 k (25°C), 2.5 k (75°C)

C1 — Not used

C2 — 820 pF Ceramic chip

C3, C4, C5, C6, C13, C14 — 0.1 µF Ceramic

C7, C8, C9, C10 — 0.1 µF Ceramic chip

C11 — 1200 pF each, 680 pF mica in parallel with an

Arco 469 variable or three or more smaller value

mica capacitors in parallel

C12 — Not used

C15 — 10 µF, 100 V Electrolytic

C16 — 1000 pF Ceramic

C17, C18 — Two 0.1 µF, 100 V Ceramic each, (ATC 200/823 or

equivalent)

D1, D2, D3, D4 — 1N4148

D5 — 28 V Zener, 1N5362 or equivalent

B1, B2, B3, B4 — Ferrite Beads

L1, L2 — Two Fair-Rite 2673021801 ferrite beads each or equivalent,

4.0 µH

T1, T2, T3 — See text

Q1, Q2, Q3, Q4 — MRF150

IC1 — MC1723CP

All resistors 1/2 W carbon or metal film unless otherwise

designated.

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Figure 2. Detailed Schematic

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Communication-concepts EB104 Engineering Bulletin Manual de usuario Pagina 2

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